BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Study of charged spectators multiplicity distributions in nucleus- nucleus reactions at the HADES experiments DTSTART;VALUE=DATE-TIME:20220712T143000Z DTEND;VALUE=DATE-TIME:20220712T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-222@events.sinp.msu.ru DESCRIPTION:Speakers: Irina Yumatova (INR RAS & NRNU MEPhI)\nMultiplicity distributions of charged spectators with Z=1\, 2\, 3 measured\nat the HADE S experiments in reactions Ag+Ag at 1.58 AGeV and Au+Au at\n1.23 AGeV will be presented. The experimental data have been obtained by\nForward multic hannel scintillation detector\, Forward Wall (FWall). The\nmultiplicity di stributions of charged fragments for different centrality\nclasses have be en compared with simulated ones obtained in the SHIELD\nand DCM-QGSM-SMM m odels.\n\nhttps://events.sinp.msu.ru/event/8/contributions/222/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/222/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF RADIONUCLIDE YIELD IN PHOTONUCLEAR REACTIONS ON NATURAL IRON DTSTART;VALUE=DATE-TIME:20220713T145000Z DTEND;VALUE=DATE-TIME:20220713T150500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-381@events.sinp.msu.ru DESCRIPTION:Speakers: Denis Iusiuk ()\nThe study of the atomic nuclei phot odisintegration is one of the important tasks of fundamental nuclear physi cs\, since a quantitative comparison of such important branches of giant r esonance decay as (γ\, n) and (γ\, p) channels has not yet been carried out. This is due to the limited measurements of photoproton cross sections . Data of the radionuclide yields on iron atoms are also important for the development of photoactivation analysis of various origin structural mate rials.\nWe have studied the weighted average yield of the (γ\, p) reactio n for 57Fe upon irradiation of natural composition iron targets. The targe ts were irradiated with 20 MeV bremsstrahlung quanta. Irradiated targets w ere measured by an Ortec semiconductor spectrometer with a high purity ger manium detector. The 847 keV γ-line from the 56Mn decay was reliably dist inguished in the spectra\, as well as by the half-life measurement method. As a result\, the weighted average output Y(γ\, p)=5.1±0.6 mbn was obta ined. However\, calculations of this output using the Talys 1.96 code resu lts YT=1.1 mbn. This value indicates a large role of non-statistical proce sses. We also considered the mechanism of semidirect reactions\, taking in to account the isospin splitting of the resonance\, and we obtained the va lue YI=1.5 mbn. The received results are discussed.\nThis work is supporte d by the Russian Science Foundation under grant 22-29-01013.\n\nhttps://ev ents.sinp.msu.ru/event/8/contributions/381/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/381/ END:VEVENT BEGIN:VEVENT SUMMARY:DETERMINATION OF THE ENERGY OF HIGH-ENERGY PROTONS (1 TEV AND HIGH ER) BY THE LFM METHOD DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-555@events.sinp.msu.ru DESCRIPTION:Speakers: Anastasiya Fedosimova ()\nCalorimetric methods are c urrently practically the only way to directly measure the characteristics of high energy (TeV and higher) cosmic nuclei. The primary particle\, inte racting with the substance of the calorimeter\, gives rise to a cascade of secondary particles in it. To measure the characteristics of the cascade\ , the dense matter is interbedded with special detectors. Based on the mea surements of signals from these detectors\, a cascade curve is formed. If the cascade curve has reached a maximum in the calorimeter\, then the prim ary energy is reconstructed quite accurately. However\, to measure the max imum of the cascade\, the calorimeter must have a sufficiently large thick ness (and so large weight). When using thin calorimeters\, the primary ene rgy is determined with a large error (30-70 percent when measuring hadroni c cascades) due to significant fluctuations in the development of the casc ade curve. In this regard\, the energy spectrum of cosmic rays for energie s of 1-100 TeV is currently poorly understood\, since different experiment al groups present different spectra of cosmic rays.\nIn this paper\, to so lve this problem\, it is proposed to use the Lessening Fluctuation Method (LFM) based on correlation curves. In this method\, instead of cascade cur ves\, correlation curves of the dependence of the cascade size on the rate of cascade development are used. The cascade development rate is understo od as a quantity equal to the difference in the cascade sizes at two measu rement levels\, divided by the thickness of the calorimeter\, during the p assage of which this change in the cascade size occurred. The rate of casc ade development depends on the primary energy and therefore it can be used as an additional quantity to improve the accuracy of primary energy recon struction. The correlation curves almost do not fluctuate and make it poss ible to determine the energy of cascades that have not reached a maximum. To test the LFM\, we simulated the passage of cascades formed by protons w ith energies of 1-10 TeV through the PAMELA collaboration calorimeter. Bas ed on the simulation\, it was shown that the correlation curves almost do not fluctuate. This makes it possible to significantly reduce measurement errors (up to ~10 percent when measuring hadron cascades). Moreover\, LFMs make it possible to correctly determine the energy of cascades that have not reached their maximum. This makes it possible to solve the problem of the large weight of the calorimeter.\nThe study was financially supported by the Ministry of Education and Science of the Republic of Kazakhstan (gr ant no. AP08855403).\n\nhttps://events.sinp.msu.ru/event/8/contributions/5 55/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/555/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF (γ\, p)-REACTIONS ON NICKEL ISOTOPES DTSTART;VALUE=DATE-TIME:20220713T150500Z DTEND;VALUE=DATE-TIME:20220713T152000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-542@events.sinp.msu.ru DESCRIPTION:Speakers: Yury Balaba ()\nThe study of photonuclear reactions on nickel isotopes is of great fundamental and applied importance. The stu dy of (γ\, n)- and (γ\, p)-reactions on nickel isotopes makes it possibl e to study the nature of direct\, semi-direct\, and statistical processes in such nuclei region.\nWe have carried out activation studies of weighted average yields of (γ\, p)-reactions for 58\,62Ni with the 20 MeV bremsst rahlung beam on natural nickel targets.\nThe spectra of irradiated targets were measured using a Canberra semiconductor spectrometer with an energy resolution of 0.75 keV at the 122 keV gamma line and 1.7 keV at the 1378 k eV gamma line.\nThe 57\,61Co activities were reliably identified in the st udied spectra. Moreover\, the 61Co activity was reliably detected using th e 909 keV gamma line\, which made it possible to minimize the error in mea suring the gamma spectra of “thick” targets. As a result\, the followi ng values of the weighted average yields of (γ\, p)-reactions were obtain ed: for 57Co Y=15.1±0.7 mb\, for 61Co Y=1.61±0.16 mb.\nBased on the simu lation results within the TALYS 1.96 program code\, the following values w ere obtained: for 57Co Y=6.5 mb\, for 61Co Y=0.44 mb. The obtained results are discussed.\nThis work is supported by the Russian Science Foundation under grant 22-29-01013.\n\nhttps://events.sinp.msu.ru/event/8/contributio ns/542/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/542/ END:VEVENT BEGIN:VEVENT SUMMARY:Magnitude and skewness of elliptic flow fluctuations at NICA energ ies DTSTART;VALUE=DATE-TIME:20220715T074000Z DTEND;VALUE=DATE-TIME:20220715T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-226@events.sinp.msu.ru DESCRIPTION:Speakers: Vinh Luong (Joint Institute for Nuclear Research)\nI n this work\, we exploit the cumulant ratios: $v_2\\{4\\}/v_2\\{2\\}$ and $v_2\\{6\\}/v_2\\{4\\}$ to study the magnitude and skewness of elliptic fl ow fluctuations in Au+Au collisions at NICA energies in the framework of s everal state-of-the-art models of relativistic heavy-ion collisions. The a greement of $v_2\\{4\\}/v_2\\{2\\}$ ratio for different models with differ ent initial conditions supports the assumption that dominant contribution to the final elliptic flow fluctuations is the participant fluctuations in the initial geometry.\n\nhttps://events.sinp.msu.ru/event/8/contributions /226/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/226/ END:VEVENT BEGIN:VEVENT SUMMARY:DEVELOPMENT OF A NON-EQUILIBRIUM HYDRODYNAMIC APPROACH TO DESCRIBI NG THE EMISSION OF HIGH-ENERGY SECONDARY PARTICLES IN COLLISIONS OF HEAVY IONS OF INTERMEDIATE ENERGIES DTSTART;VALUE=DATE-TIME:20220715T151000Z DTEND;VALUE=DATE-TIME:20220715T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-578@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Dyachenko (Petersburg State Transport Univ ersity)\nA.T. D’yachenko$^{1\,2}$\, I. A. Mitropolsky$^{2}$\n$^{1}$ *Emp eror Alexander I Petersburg State Transport University\, St. Petersburg\, Russia*\; \n$^{2}$ *B.P. Konstantinov Petersburg Nuclear Physics\, Insti tute\, National Research Center “Kurchatov Institute”\, Gatchina\, Rus sia*\n E-mail: dyachenko_a@mail.ru \n\nDeveloping the hydrodynamic approac h in describing collisions of heavy ions of intermediate energies [1-6]\, we proposed to solve the kinetic equation together with the solution of th e equations of hydrodynamics [2\,3]. This made it possible to successfully describe the double differential cross sections for the emission of proto ns and pions in collisions of medium-energy heavy ions [2\, 3]. We also ma naged to completely describe the spectra of protons\, pions\, and photons for the collision of carbon nuclei with a beryllium target in the energy r ange of 0.3–3.2 GeV per nucleon\, obtained in the ITEP experiments [7\, 8]. When describing these spectra\, the correction for the microcanonical distribution [4\, 5] was taken into account\, and the contribution of the fragmentation process was also taken into account for the proton yields [6 ]. \n\nThe contribution of the effects of short-range correlations SRC\, w hich has recently received much attention [9]\, was also studied by us. As a result\, it turned out that these effects are included in our approach\ , since we successfully describe the experimental data on the spectra of h ard photons [10]\, which are described in [9] with the addition of a high- momentum component. Our approach is applicable to collisions of both light and heavy nuclei\, which can be seen from a comparison of the description of the proton distributions in transverse momentum in the Au+Au reaction at an energy of 1.48 GeV per nucleon with experimental data and other theo retical approaches based on solving the Boltzmann equation\, the quantum m odel molecular dynamics\, etc. [11]. This can be extended to the energy ra nge of the reptile complex NICA located at JINR (Dubna).\n\n1. A. T. D’ yachenko\, K.A. Gridnev\, and W. Greiner\, J. Phys. G 40\, 085101 (2013).\ n2. A. T. D’yachenko\, I. A. Mitropolsky\, Phys. Atom. Nucl. 82\, 1641 (2019).\n3. A. T. D’yachenko\, I. A. Mitropolsky\, Bull. Russ. Acad. S ci.: Phys. 84\, 391(2020).\n4. A. T. D’yachenko\, I. A. Mitropolsky\, EPJ Web Conf. 204\, 03018 (2019).\n5. A. T. D’yachenko\, I. A. Mitropol sky\, Phys. Atom.Nucl. 83\, 558 (2020).\n6. A. T. D’yachenko. I. A. Mi tropolsky \, Bull. Russ. Acad. Sci.: Phys. 85\, 554(2021).\n7. B.M. Abram ov et al.\, Phys. Atom. Nucl. 78\, 373 (2015).\n8. I.G. Alekseev et al. \, Phys. Atom. Nucl. 78\, 936 (2015).\n9. W.M. Guo\, B.A. Li\, G.C. Yo ng\, Phys.Rev.C 104\,034603 (2021).\n10. J. Stevenson et al.\, Phys. Rev. Lett. 57\, 555 (1986).\n11. E. E. Kolomeitsev et al. J. Phys. G 31 741(20 05).\n\nhttps://events.sinp.msu.ru/event/8/contributions/578/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/578/ END:VEVENT BEGIN:VEVENT SUMMARY:MCDST: A UNIFIED STORAGE FORMAT FOR HEAVY ION COLLISION SIMULATED DATA DTSTART;VALUE=DATE-TIME:20220712T153000Z DTEND;VALUE=DATE-TIME:20220712T155000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-211@events.sinp.msu.ru DESCRIPTION:Speakers: Ekaterina Kuzina (NRNU MEPhI)\nEach Monte Carlo gene rator used for heavy-ion collision simulations has a specific output form of simulated events. This fact complicates data storage and prevent standa rdization of processing data generated considering different models. \nThe McDst format is implemented to work around this. The format allows to sto re and smoothly read simulated data\, that obtained from different generat ors\, for analysis performance. To take advantage of the McDst unified app roach a set of convertors for popular MC generators output formats is also implemented. Discussed programming solution is developed in C++ using ROO T libraries. \nIn this talk\, the architecture of the McDst format is pres ented. A quick start guide to ease simulated data processing is also provi ded.\n\nhttps://events.sinp.msu.ru/event/8/contributions/211/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/211/ END:VEVENT BEGIN:VEVENT SUMMARY:GAMOW-TELLER AND ANALOG RESONANCES IN NEUTRON-RICH Sn ISOTOPES DTSTART;VALUE=DATE-TIME:20220714T093000Z DTEND;VALUE=DATE-TIME:20220714T100000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-601@events.sinp.msu.ru DESCRIPTION:Speakers: Yuri Lutostansky (Kurchatov Institute)\nGAMOW-TELLER AND ANALOG RESONANCES IN NEUTRON-RICH Sn ISOTOPES\n\nYu. S. Lutostansky1\ , G. A. Koroteev1\,2\, A.Yu. Lutostansky1\, \nV. N. Tikhonov1\, N. Fazliak hmetov1\,2\,3\n1 National Research Center "Kurchatov Institute"\, Moscow\, Russia\n2Moscow Institute of Physics and Technology\, Dolgoprudny\, Russi a\n3 Institute for Nuclear Research of Russian Academy of Sciences\,Moscow \, Russia\n\nCharge-exchange resonances: the giant Gamow–Teller (GTR [1] )\, analog (AR) resonances and the so-called “pigmy” resonance (PR)\, which are lying below GTR [2]\, have been studied in the microscopic theor y of finite Fermi systems and in the semiclassical approach. Calculations are presented for tin isotopes with the mass numbers A = 112 – 140 and c ompared with experimental data [3\, 4]. \nThe calculations were performed with the refined constants of local spin-isospin ( ) and isospin-isospin ( ) interaction of quasiparticles – and accordingly. These interactio n constants are phenomenological parameters and they were determined from comparison with experimental data [5]. The calculated energy difference Δ EG−A = EG − EA tends to zero with increasing A number and N – Z indi cating the restoration of Wigner SU(4)-symmetry [6]. \nThe energies and ma trix elements of the excited resonant states that determine the structure of the charge-exchange strength function S(E) were calculated. A compariso n of the calculated and experimental strength functions S(E) also shows th eir similarity both in energies and in matrix elements. The influence of c harge-exchange resonances on the process of neutrino capture by nuclei was also investigated [7] and it is shown that taking these resonances into a ccount is of fundamental importance.\nThis work was supported in part by t he Russian Science Foundation (grant RSF 21-12-00061) and by the Kurchatov Institute grant (order 2767 dated 28.10.2021).\n\n[1] Yu. V. Gaponov\, an d Yu. S. Lyutostanskii. JETP Lett. 15\, 120 (1972).\n[2] Yu. S. Lutostansk y. JETP Lett. 106\, 7 (2017).\n[3] K. Pham\, J. Janecke\, D. A. Roberts\, et al. Phys. Rev. C 51\, 526 (1995).\n[4] J. Yasuda\, et al. Phys. Rev. Le tt. 121\, 132501 (2018). \n[5] Yu. S. Lutostansky. Phys. Atomic Nuclei 83\ , 33 (2020).\n[6] Yu. S. Lutostansky. Phys. Atomic Nuclei 83\, 39 (2020).\ n[7] Yu. S. Lutostansky\, V. N. Tikhonov. Phys. Atomic Nuclei 79\, 540 (20 18).\n\nhttps://events.sinp.msu.ru/event/8/contributions/601/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/601/ END:VEVENT BEGIN:VEVENT SUMMARY:Methods for centrality determination in heavy-ion collisions with the MPD experiment DTSTART;VALUE=DATE-TIME:20220715T093000Z DTEND;VALUE=DATE-TIME:20220715T095000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-230@events.sinp.msu.ru DESCRIPTION:Speakers: Ilya Segal (National Research Nuclear University MEP hI)\nCentrality is an important concept in the study of strongly interacti ng matter created in a heavy-ion collision whose evolution depends on its initial geometry. Experimentally collisions can be characterized by the me asured multiplicities or energy of produced particles or spectator fragmen ts. Relation between collision geometry and experimentally measured multip licities is commonly evaluated within the Monte-Carlo Glauber approach. \n We will present methods for centrality determination in heavy-ion collisio ns with the Multi Purpose Detector (MPD) experiment at the future Nuclotro n-based Ion Collider fAcility (NICA). The multiplicity of charged hadrons is provided by the MPD Time Projection Chamber (TPC) and connected to coll ision geometry parameters using the Monte-Carlo Glauber model. The energy of spectator fragments is estimated with the MPD Forward Hadron Calorimete r (FHCal). We will also touch possibilities to determine centrality using the FHCal and Monte-Carlo Glauber model.\n\nhttps://events.sinp.msu.ru/eve nt/8/contributions/230/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/230/ END:VEVENT BEGIN:VEVENT SUMMARY:$^8$He SPECTROSCOPY IN STOPPED PION ABSORPTION REACTION DTSTART;VALUE=DATE-TIME:20220712T101000Z DTEND;VALUE=DATE-TIME:20220712T103000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-229@events.sinp.msu.ru DESCRIPTION:Speakers: Tatiana Leonova ()\nLevel structure of heavy helium isotope $^8$He is studied in the reactions of stopped pion absorption $^9$ Be($\\pi^-\,p$)X\, $^{10}$B($\\pi^-\,pp$)X\, $^{11}$B($\\pi^-\,pd$)X\, $^{ 12}$C($\\pi^-\,p^3$Нe)X\, $^{14}$C($\\pi^-\,d^4$Нe)X\, $^{14}$C($\\pi^-\ ,t^3$Нe)X. The experiment was carried out at the LANL with a two-arm semi conductor spectrometer.  The ground and excited states have been observed . The assumption  that the  excited state E$_x \\approx $ 3 MeV is a sof t dipole mode is made. The states E$_x \\approx $ 9.3 MeV\, 11.5 MeV\, 12. 2 MeV  have been observed for the first time. Parameters of excited state s have been compared with data of other experimental and theoretical works .\n\nhttps://events.sinp.msu.ru/event/8/contributions/229/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/229/ END:VEVENT BEGIN:VEVENT SUMMARY:THE METHOD AND SET UP FOR THE MEASUREMENT OF DELAYED NEUTRON TEMPO RAL CHARACTERISTICS FOR THE FISSION OF HEAVY NUCLEI IN THE COMPLEX PRIMARY NEUTRON FIELDS DTSTART;VALUE=DATE-TIME:20220712T131000Z DTEND;VALUE=DATE-TIME:20220712T133000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-204@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitrii Gremyachkin (JSC SSC RF-IPPE)\nPresent work is dedicated to the description of the set-up designed for precise measure ments of the energy dependence of aggregate delayed neutron characteristic s in the energy range of primary neutrons from thermal to 20 MeV. The set- up constructed on the base of Tandem-3M accelerator of SSC RF – IPPE con sisted of high-efficiency neutron detector\, spectrometer of primary neutr ons\, pneumatic transport system of the sample under investigation\, exper imental control and data acquisition system. Special emphasis is made to s tudy the influence of the primary neutron flux on performance characterist ics of the neutron detector and to the measurements of the primary neutron spectra generated from the reaction D(d\,n) on the solid neutron target. The results of measurements of delayed neutron relative abundances and hal f-lives are presented for the fission of 235U by the neutrons in energy ra nge from 0.42 to 8 MeV\, including insufficiently known range from 4 to 8 MeV.\n\nhttps://events.sinp.msu.ru/event/8/contributions/204/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/204/ END:VEVENT BEGIN:VEVENT SUMMARY:Comparative analysis of various variants of magneto-inertial therm onuclear fusion DTSTART;VALUE=DATE-TIME:20220715T143000Z DTEND;VALUE=DATE-TIME:20220715T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-624@events.sinp.msu.ru DESCRIPTION:Speakers: Nikita Batrak ()\nThe paper presents a comparative a nalysis of various variants of magnetic inertial fusion. The main thermoph ysical parameters of such installations with high-pulse energy lasers and high-speed plasma jets are determined. It is shown that modern thermonucle ar plants\, as well as those under development\, can be used for a wide ra nge of research and directions.\nComparison of various options for the imp lementation of magnetic inertial fusion allows us to see a wide range of u nexplored tasks and\, accordingly\, the trajectory of action soon. The wor k also compared laser installations that are used for the implementation o f MITS. Namely MagLIF\, Z-Machine\, NIF and OMEGA. In addition\, the artic le mentioned other installations with a description of their use in variou s experiments. The paper also talks about some startups of the last ten ye ars that will be implemented soon.\n\nhttps://events.sinp.msu.ru/event/8/c ontributions/624/ LOCATION: НИИЯФ\, 19 к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/624/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigation of the Conditions for the Formation of Particle Flux es and High-Power Radiation in a Plasma with a Strong Magnetic Field DTSTART;VALUE=DATE-TIME:20220715T145000Z DTEND;VALUE=DATE-TIME:20220715T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-625@events.sinp.msu.ru DESCRIPTION:Speakers: Nikita Kopaleishvili ()\nDue to the high-energy part icles of thermonuclear reactions\, the generation of neutron and X-ray rad iation is possible\, nuclear fusion reactions can occur\, in which particl es of even higher energies are born (for example\, protons with an energy of 14 MeV)\, the use of which is possible in a number of applied technolog ies for medicine\, safety and disposal nuclear waste.\nPlasma maintenance in a highly nonequilibrium state requires a very powerful driver (heating energy source)\, and therefore one should not count on the fact that such a plasma will provide an energy output that greatly exceeds the driver ene rgy. However\, it should be emphasized that the conversion of the energy o f the driver into the energy of beams and radiation from the plasma has a very high efficiency compared\, for example\, with classical accelerator s ystems. Also\, such a plasma that generates neutrons of the megaelectronvo lt range can itself be a driver of a subcritical nuclear system\, in which (in the chains of transformations triggered by these neutrons) nuclear fu el is produced and waste from the nuclear fuel cycle is simultaneously dis posed of. Such a symbiotic "fusion-fission" system achieves a multiple inc rease in energy output.\n\nhttps://events.sinp.msu.ru/event/8/contribution s/625/ LOCATION: НИИЯФ\, 19 к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/625/ END:VEVENT BEGIN:VEVENT SUMMARY:SiC Nuclear Radiation Detectors after Irradiation by Heavy Ions an d Neutrons DTSTART;VALUE=DATE-TIME:20220713T070000Z DTEND;VALUE=DATE-TIME:20220713T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-208@events.sinp.msu.ru DESCRIPTION:Speakers: L. Hrubcin (JINR\, IEE SAS)\nSilicon carbide (SiC) i s very perspective material for fabrication radiation-tolerant electronics \, high-temperature electronics as well as for nuclear radiation detectors for working in harsh environments. SiC has obtained increasing interest d ue to achievement of a high purity level in the crystal structure and cons iderable thickness (> 100 µm) in the epitaxial layer. SiC is mostly inves tigated for its physical properties\, e.g.: the band gap energy of the pol ytype 4H-SiC is 3.26 eV\, the mean energy of electron-hole pair creation i s 7.78 eV\, the electron saturation drift velocity is 2 x 10^7 cm/s and th e breakdown voltage is 2 x 10^6 V/cm at room temperature. Detectors based on high quality epitaxial layer of 4H-SiC show a high radiation hardness\, good spectroscopic resolution and can operated not only at room but also at elevated temperatures (~300°C) [1\,2].\nOur detector structures [3] we re prepared on a 25 µm or 50 µm thick nitrogen-doped 4H­SiC layer (dono r doping < l x 10^14 cm-3) grown by the liquid phase epitaxy on a 4" SiC w afer (donor doping ~ 2 x 10^18 cm-3\, thickness 350 µm). Circular Schottk y Ni/Au contact (diameter 3.0 mm\, thicknesses 10/30 nm) to 4H-SiC layer w as formed through a contact metal mask\, while full area Ti/Pt/Au contact (thicknesses 10/30/90 nm) was evaporated on the other side (substrate).\nE lectrical characteristic of prepared SiC detectors were measured using Kei thley measuring complex\, which consisted of 4200A-SCS Parameter Analyzer\ , 2657A High Power System and CVIV Multi-Switch. Current-voltage and capac ity-voltage (C-V) measurements were performed up to 300 V. The reverse bre akdown voltage exceeded 300 V and the reverse current was below 10 pA. Fro m C-V measurements the depletion thickness and doping concentration profil e were calculated. Spectroscopic parameters were measured with alpha sourc es 226Ra and 238Pu and FWHM of SiC detectors varied round of 20 keV for 5. 5 MeV α-particles energy.\nSiC detectors were irradiated by high-energeti c beam of heavy ions of Xenon with energy of 165 MeV at the IC-100 cyclotr on of the Joint Institute for Nuclear Research (JINR) in Dubna up to dose 1.5 x 10^10 cm-2. We also studied the effect of the degradation of these d etectors under impact of neutrons at the neutron reactor IBR-2 (JINR) up t o dose 3.4 x 10^15 cm-2.\nPrepared SiC detectors shown good energy resolut ion and high radiation resistance against heavy ions and neutrons and will be used in experiments at JINR.\n\n1. F.H. Ruddy and J.G. Seidel\, NIM in Phys. Res. B 263\, 163 (2007).\n2. D. Puglisi and G. Bertuccio\, Micromac hines 10\, 835 (2019).\n3. B. Zat'ko et al.\, Applied Surface Science 536\ , 147801 (2020).\n\nhttps://events.sinp.msu.ru/event/8/contributions/208/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/208/ END:VEVENT BEGIN:VEVENT SUMMARY:POSSIBLE ROTATIONAL STRUCTURE OF $^{13}$C LOW-LYING EXCITED STATES DTSTART;VALUE=DATE-TIME:20220712T091000Z DTEND;VALUE=DATE-TIME:20220712T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-274@events.sinp.msu.ru DESCRIPTION:Speakers: Andrey Danilov (NRC Kurchatov Institute)\n$^{13}$C i s a good example of a “normal” nucleus that is well described in the f ramework of the shell model. Its level scheme is reliably determined up to excitation energies ~ 10 MeV. \nHowever\, some open questions remain rega rding the structure of low-lying $^{13}$C states. This leads to increased attention to $^{13}$C so far.\nIn [1] a hypothesis was put forward about a new type of symmetry in the $^{13}$C structure - D’$_{3h}$ symmetry. Ba sed on this symmetry within the framework of the algebraic cluster model [ 1] a rotational nature was predicted for low-lying excited states of $^{13 }$C and almost all low-lying $^{13}$C states were distributed among 6 rota tional bands. Thus\, a critical analysis of the available data is required to answer the question about the nature of low-lying excited states of $^ {13}$C.\nWe propose to check the possibility of the existence of these rot ational bands based on Modified diffraction model (MDM) analysis. The g.s. -based rotational band proposed in the framework of the algebraic cluster model may exist\, since MDM analysis showed that all states of this band h ave normal\, nonincreased root mean square radii. The second rotational ba nd predicted in the framework of the algebraic cluster model\, the band ba sed on the 3.09 MeV state\, is very interesting and promising\, since its first state of this band is the state with a halo. And the question arises about the nature of other states of this band? It is quite natural that t he states of one band should have similar features. Is the halo structure preserved for the other members of this band? It should also be noted that all other members of this band are unbound\, while 3.09 MeV is bound. Ind eed\, a preliminary MDM analysis of the existing experimental data on the scattering of light particles showed that the elder members of this band h ave increased root mean square radius. This result speaks in favor of the possibility of the existence of this rotational band and\, possibly\, of the halo–like structure of its elder members. The band predicted in the framework of the algebraic cluster model\, which contains the 9.90 MeV sta te\, most likely does not exist\, since we showed within MDM that the memb ers of this assumed band have different radii. 8.86 MeV has an increased r adius\, the rest of the states have a non-increased radius. Thus\, some of the predicted rotational bands may actually exist. It should be mentioned that negation of at least one rotational band predicted within the D'$_{3 h}$ symmetry raises doubts on the applicability of this symmetry to $^{13} $C.\n\n1. R. Bijker\, Phys. Rev. Lett. 122\, 162501 (2019).\n\nhttps://eve nts.sinp.msu.ru/event/8/contributions/274/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/274/ END:VEVENT BEGIN:VEVENT SUMMARY:LOOKING FOR AN ELECTRON BRIDGE IN 229mTh DTSTART;VALUE=DATE-TIME:20220712T074000Z DTEND;VALUE=DATE-TIME:20220712T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-273@events.sinp.msu.ru DESCRIPTION:Speakers: Andrey Popov (PNPI)\nThe isomeric state 229mTh has t he energy of 8.3(2) eV [1]. The small natural width and the location of th e transition in the optical range give hope for the use of this state as a n oscillator with a quality-factor several orders of magnitude higher than the Q-factor of the systems currently in operation.\nChanges in the elect ron shell with changes in the degree of ionization\, chemical environment\ , environmental parameters and the presence of external fields can have a significant impact on the probability of both discharge and settlement of the isomeric state through the mechanism of electronic bridges. Knowledge of the features of the decay of the isomer under the condition of the ener gy prohibition of direct electron emission will allow us to determine the optimal parameters of the feeding of the isomer using the electronic bridg e mechanism. The “tuning" of the electron shell can increase the probabi lity of isomer excitation by several orders of magnitude [2]. The probabil ity of discharge through electronic states is a good indicator for such ad justment.\nThe existing limitation on the lifetime of the isomer in a sing ly-charged thorium-229 (T1/2<10ms [3]) ion allows us to hope for using the lifetime of the isomeric state as an indicator of the width of the electr onic bridge.\nThe report presents the details of the preparation of an exp eriment to search for the decay of the isomeric state of thorium-229 throu gh the mechanism of an electronic bridge. The method [4\, 5] of formation of a beam of ions of the thorium isomer\, the scheme of ion transport and preparation of a thin source and registration of conversion electrons will be considered.\n\n1. B. Seiferle et al.\, Nature 573\, 238 (2019).\n2. F. F. Karpeshin\, M.B. Trzhaskovskaya Nucl. Phys. A 1010 (2021) 122173\n3. B. Seiferle\, et al.\, Phys. Rev. Lett. 118\, 042501 (2017)\n4. V. Sonnensch ein\, et al.\, Eur. Phys. J. A\, 2012\, vol. 48\, p. 52.\n5. Y.I. Gusev\, et al.\, Bull. Russ. Acad. Sci.: Phys.\, 2016\, vol. 80\, no.8\, p. 875.\n \nhttps://events.sinp.msu.ru/event/8/contributions/273/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/273/ END:VEVENT BEGIN:VEVENT SUMMARY:CALIBRATION OF RADIOISOTOPE DEVICES DTSTART;VALUE=DATE-TIME:20220712T091000Z DTEND;VALUE=DATE-TIME:20220712T093500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-580@events.sinp.msu.ru DESCRIPTION:Speakers: Ulugbek Ashrapov (senior scientific researcher)\nIn paper considered development method calibration radioisopote densitometer amd radioisotope level gauges in laboratory conditions.The tightness of Cs -137 closed radiation ionization sources was made by the immersion method. The radioisotope densitometers (Endress+Hauser AG\, Switzerland) was cali brated using a special technique with using metal calibration container wi th liquid imitators based on a mixture of bromoform and ethyl alcohol havi ng different densities. The radioisotope level gauge (Mesacon Messelektron ik\, GmbH Dresden) on a special stand using a mixture of bromoform and eth anol was calibrated.\n\nhttps://events.sinp.msu.ru/event/8/contributions/5 80/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/580/ END:VEVENT BEGIN:VEVENT SUMMARY:Charge exchange processes in carbon ions fragmentation at 300 MeV/ nucleon: a comparison with models of ion-ion interactions DTSTART;VALUE=DATE-TIME:20220714T150900Z DTEND;VALUE=DATE-TIME:20220714T152900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-210@events.sinp.msu.ru DESCRIPTION:Speakers: A. A. Kulikovskaya (NRC «Kurchatov institute»)\nTh e study of ion-ion interactions at high energies is one of the main direct ions of modern nuclear physics. A significant number of Monte Carlo models have been developed in this direction\, that require both experimental ve rification and improvement of their basic approaches. Also\, the processes of nucleon charge exchange in ion fragmentation are poorly studied. There are only a few experiments performed in energy range 1-2 GeV/nucleon and only for isobaric transitions [1\,2].\n The experimental data were obtaine d at the FRAGM facility of the ITEP−TWAC heavy-ion complex for 12С frag mentation at 300 MeV/nucleon on a beryllium target [3\, 4]. Fragments were detected at an angle equal to 3.5◦ with respect to the incident ion bea m. The fragmentation of carbon ions leads to the production of three long- lived isotopes as a result of single nucleon charge exchange: 11Be (7 neut rons)\, 12B (7 neutrons)\, 12N (7 protons). Isotopes 11Be and 12B were fou nd and their momentum spectra were measured. The predictions of four Monte Carlo models of ion-ion interactions (BC\, INCL\, LAQGSM\, and QMD) were tested if they can describe the experimental momentum spectra of the fragm ents. The binary cascade (BC) model gives the best description.\n\n\n1. М .Roy-Stephan et al.\, Nucl.Phys. A482\, 373 (1988).\n2. J. L. Rodriguez-Sa nchez et al.\, Phys.Lett.B 807\, 135565 (2020).\n3. B.M. Abramov et al.\, EPJ Web Conf. 138\, 03002 (2017).\n4. B.M. Abramov et al.\, J.Phys.Conf.Se r. 1390\, 012004 (2019).\n\nhttps://events.sinp.msu.ru/event/8/contributio ns/210/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/210/ END:VEVENT BEGIN:VEVENT SUMMARY:Analysis of M1 excitations in $^{28}$Si using inelastic proton sca ttering DTSTART;VALUE=DATE-TIME:20220712T120000Z DTEND;VALUE=DATE-TIME:20220712T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-454@events.sinp.msu.ru DESCRIPTION:Speakers: Mikhail Onegin (NRC "Kurchatov institute" - PNPI)\nI sovector and isoscalar spin-flip excitations in even-even sd-shell nuclei excited by inelastic proton scattering were considered in [1]. Recently *M *1 excitations in sd-shell were also analyzed in [2]. In [2] only stronges t excitations of $^{28}$Si were discussed. Shell model predicts for $^{28} $Si a few of 1$^+$ states with excitation energy lower than 20 MeV. Nearly all of these states can be identified with experimentally observed levels excited in (p\,p’) and (e\,e’) reactions. Here we analyze the spectru m of 1$^+$ states in $^{28}$Si excited in (p\,p’) reaction in comparison with theoretical spectroscopic predictions. The calculations were carried out in the sd model space with the USDA Hamiltonian [3] using the code Nu ShellX [4].\nThe M1 excitations in light nuclei are mainly determined by t he spin transition density. Current transition density play only minor imp ortance in the observed B(*M*1) value. The B(*M*1) value can be extracted from the (e\,e’) scattering experiments. On the other hand only spin tra nsition density determine the forward cross section of (p\,p’) reaction with the excitation of *M*1 states. We analyze forward cross sections of ( p\,p’) reaction with excitation of 1$^+$ levels in $^{28}$Si and determi ne the possible impact of current density in the B(*M*1) value. \nIn the e xcitation of *M*1 states with protons both *T*=1 and *T*=0 states are exci ted and only *T*=1 states can be excited in (e\,e’). The theoretically p redicted states can be identified with the observed 1$^+$ levels according to their excitation energy but the strength of the excitations can consid erably differ from the theoretical prediction. The possible explanation of this difference may be the isospin mixture. \n\n1. G.M. Crawley\, C. Djal ali\, N. Marty et al\, Phys. Rev. C 39\, 311 (1989).\n2. H. Matsubara\, A. Tamii\, H. Nakada et al\, Phys. Rev. Let. 115\, 102501 (2015).\n3. B. A. Brown and W.A. Richter\, Phys. Rev. C 74\, 034315 (2006).\n4. B. A. Brown and W. D. M. Rae\, The Shell-Model Code NuShellX. Nuclear Data Sheets 120\ , 115 (2014).\n\nhttps://events.sinp.msu.ru/event/8/contributions/454/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/454/ END:VEVENT BEGIN:VEVENT SUMMARY:Perspectives of inorganic scintillator GAGG application for pre cision electromagnetic calorimetry DTSTART;VALUE=DATE-TIME:20220712T082000Z DTEND;VALUE=DATE-TIME:20220712T084000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-217@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitry Averyanov (NRC "Kurchatov Institute")\nScinti llation crystals made of a new promising material Gd₃Al₂Ga₃O₁₂ ( GAGG) are considered because of their high radiation resistance\, density and light yield [1\, 2].These crystals can be used in addition to lead tun gstate (PbWO4) crystals for development of a new generation electromagneti c calorimeter with good spatial and energy resolutions in a wide energy ra nge. PbWO4 crystals enable accurate detection of high energy photons\, whi le the addition of GAGG crystals makes it possible to precisely measure ph oton energies down to a few MeV.\n Different options of composite electr omagnetic calorimeter based on PWO and GAGG crystals are considered to opt imise spatial and energy resolutions in a wide energy range (from 1 MeV to 100 GeV). Optimisation is based on GEANT4 simulations with accounting of light collection using different photodetectors and a noise of electronics . The simulations are verified using measurements of GAGG samples obtained with radioactive sources and test beam measurements of PbWO4 based Photon Spectrometer of the ALICE experiment at CERN [3].\n1. K. Kamada\, T. Yana gida [et al.]\, IEEE trans. on nuclear science 59(5):2112-2115 (2012)\n2. Y. Zhu\, S.Qian [et al.]\, Optical Materials 105\, 109964 (2020)\n3. D.V. Aleksandrov [et al.]\, Nucl. Instrum. Meth. A550\, 169–184 (2005)\n\nhtt ps://events.sinp.msu.ru/event/8/contributions/217/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/217/ END:VEVENT BEGIN:VEVENT SUMMARY:Theoretical study of antihydrogen formation reactions in the three body e-e+p̅ system via Faddeev-Merkuriev equations in total orbital mom entum representation DTSTART;VALUE=DATE-TIME:20220715T070000Z DTEND;VALUE=DATE-TIME:20220715T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-213@events.sinp.msu.ru DESCRIPTION:Speakers: Vitaly Gradusov (St. Petersburg State University)\nT heoretical study of antihydrogen formation reactions in the three body e-e +p̅ system via Faddeev-Merkuriev\nequations in total orbital momentum re presentation\n\nV.A. Gradusov1\, V.A. Roudnev1\, E.A. Yarevsky1\, S.L. Yak ovlev1\n1St Petersburg State University\, St Petersburg\, Russia\; \n E-ma il: v.gradusov@spbu.ru\n \nWe present the results of calculations of low-e nergy reaction in the three body e-e+p̅ system with the emphasis on the p rocess of the antihydrogen formation from the ground and excited states of the positronium. This reaction is important for some of the current antim atter experiments [1\, 2]. The multi-channel scattering calculations are b ased on a new highly efficient method of solving the Faddeev-Merkuriev equ ations in total orbital momentum representation [3]. We discuss the effect s that originate from the long-range dipole interaction between the excite d atom and the spectator particle [4\, 5]. Among them are the Gailtis-Damb urg oscillations in the total and partial cross sections.\n\n\n\n 1. G . Testera et al. (AEgIS Collab.)\, Hyperfine Interact. 233\, No. 1-3\, 13 (2015).\n 2. P. Pérez et al.\, Hyperfine Interact. 233\, No. 1-3\, 21 (2015).\n 3. V.A. Gradusov et al.\, Commun. Comput. Phys. 30\, No. 1\ , 255 (2021).\n 4. M. Gailitis\, J. Phys. B: Atom. Mol. Phys. 9\, 843 (1976). \n 5. M. Gailitis and R. Damburg\, Sov. Phys. JETP 17\, No. 5\ , 1107 (1963).\n\nhttps://events.sinp.msu.ru/event/8/contributions/213/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/213/ END:VEVENT BEGIN:VEVENT SUMMARY:Simple model of dissociation based on time-dependent Faddeev equat ions DTSTART;VALUE=DATE-TIME:20220715T103000Z DTEND;VALUE=DATE-TIME:20220715T105000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-212@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Roudnev (St Petersburg State University)\nF addeev equations play an important role as a backbone of computational and theoretical models of quantum few-body systems in nuclear\, atomic and mo lecular physics. Traditionally\, they are used in the context of bound sta te and scattering calculations in stationary approach. The Faddeev decompo sition of the operator can also be efficiently used for theoretical and nu merical modeling of essentially non-stationary processes\, such as dissoci ation and ionization of molecular ions in the external non-stationary fiel ds. Here we take a step towards more extensive usage of the Faddeev decomp osition for non-stationary systems by giving an example of a simple model of the positive Hydrogen ion dissociation in a short intense laser field. \nAs is mentioned by Belyaev [1]\, the Faddeev decomposition allows us to formulate the simplest possible model of interatomic interaction by using a single two-body state projection of different components of the interac tion\, which\, unlike the traditional quantum chemistry approach\, gives t he results that are qualitatively comparable to the exact treatment of the problem. By including a non-stationary interaction with an external field we come to a system of non-stationary Faddeev equations that we solve num erically. We compare the dissociation probability and the kinetic energy r elease (KER) for the dissociated state obtained in the new and the more tr aditional time-dependent Schroedinger equation approaches [2]. \n\n1. Vlad imir B. Belyaev\, Lectures on the Theory of Few-Body Systems\, Springer Ve rlag (1990).\n2. V. Roudnev and B.D. Esry\, Phys. Rev. A. 71\, 013411 (2 005).\n\nhttps://events.sinp.msu.ru/event/8/contributions/212/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/212/ END:VEVENT BEGIN:VEVENT SUMMARY:PECULIARITIES OF THE ENERGY SPECTRUM OF THE 12C NUCLEUS IN A 3α MODEL DTSTART;VALUE=DATE-TIME:20220715T132000Z DTEND;VALUE=DATE-TIME:20220715T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-214@events.sinp.msu.ru DESCRIPTION:Speakers: Ergash Tursunov (Institute of Nuclear Physics\, Uzbe kistan Academy of Sciences)\nThe aim of present work is to study peculiar properties of the 12C(0+) and 12C(2+) energy spectrum associated with remo val of Pauli forbidden states from the 3α functional space. A deep αα- potential of BFW [1] will be employed which has two Pauli forbidden states in the S wave and a single forbidden state in the D wave. A variational m ethod on symmetrized Gaussian basis is employed. For the elimination of th e 3α Pauli forbidden states we use the same direct orthogonalization meth od from [2]. As a possible origin of non-analytical behavior of the 12C sp ectrum\, consequences of the quantum phase transition (QPT) in the 12C nuc leus will be discussed.\nThe direct orthogonalization method [2] is based on the separation of the complete Hilbert functional space into two parts. The first subspace LQ\, which we call allowed subspace\, is defined by th e kernel of the complete three-body projector P ̂. The rest subspace LP contains 3α states forbidden by the Pauli principle. After the separation of the complete Hilbert functional space of 3α states into the LQ and LP subspaces\, at next step we solve the three-body Schrödinger equation in LQ.\n\nIn Fig.1 we display the calculated lowest 0+ spectrum of the 12C n ucleus as a function of ϵ\, the maximal allowed eigen value of the Pauli projection operator. As can be seen from the figure\, there exist a specia l eigen value of the projector P ̂\, which play a decisive role for the 0 + energy spectrum of the 12C nucleus. The corresponding eigen state of P ̂ creates a ground state of 12C in a deep phase\, while from the left sid e of this point the lowest energy is close to the energy of the Hoyle stat e. The situation in the 2+ spectrum is similar.\n\n1. B. Buck\, H. Friedri ch\, and C. Wheatley\, Nucl. Phys.A 275\, 246 (1977).\n2. H. Matsumura\, M . Orabi\, Y. Suzuki\, and Y. Fujiwara\, Nucl. Phys. A 776\, 1 (2006).\n\nh ttps://events.sinp.msu.ru/event/8/contributions/214/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/214/ END:VEVENT BEGIN:VEVENT SUMMARY:Testing of the high-energy $\\pi$ and K meson production by the p rimary cosmic protons and helium nuclei DTSTART;VALUE=DATE-TIME:20220713T120000Z DTEND;VALUE=DATE-TIME:20220713T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-427@events.sinp.msu.ru DESCRIPTION:Speakers: Anton Lukyashin (MEPhI/MSU)\nThe primary cosmic part icles with very high energies are initiating huge cascades of various seco ndary particles in the atmosphere. The atmospheric muon spectrum at energi es from 100 up to $10^{5}$ GeV is formed in decays of the most energetic $ \\pi$ and K mesons produced by the primary protons and more heavy nuclei w ith energies above the threshold and up to $10^{7}$ GeV. The primary nucle i may be regarded as a flux of nucleons. A sophisticated scheme of simulat ions of the atmospheric vertical muon flux has been elaborated. The partia l differential energy spectra of the atmospheric vertical muons in the air shower cascades initiated by primary cosmic nucleons with different fixed energies had been simulated with the help of the program package CORSIKA with statistics of $10^{6}$. The suggested scheme of simulations provides a reasonable accuracy at high energies. The eight most popular hadronic in teractions models QGSJET-01\, QGSJET-II-03\, QGSJET-II-04\, DPMJET 2.55\, VENUS 4.12\, EPOS LHC\, SIBYLL 2.1 and SIBYLL 2.3 had been used to estimat e these partial spectra. These partial spectra of muons have been convolve d with the energy spectrum of the primary nucleons to estimate the atmosph eric vertical muon flux. The known calculations of the primary cosmic prot on and helium nuclei spectra produced in the supernova remnants had been n ormalized on the AMS-02 data and tested by PAMELA\, ATIC-2\, CREAM\, ARGO- YBJ\, ARGO-YBJ &FWCTA\, KASCADE\, KASCADE-Grande\, Tunka\, Ice Cube and Te lescope Array TALE data. The energy spectrum of the primary nucleons had b een estimated with the help of these spectra. At last\, the simulated spec trum of the atmospheric vertical muons had been compared with the rather a ccurate measurements of the atmospheric vertical muon spectra at energies above 100 GeV (e.g.\, L3+Cosmic\, MACRO\, LVD\, Ice Cube data). This compa rison had demonstrated that all tested models failed to reproduce the atmo spheric vertical muon flux correctly. The calculated muon fluxes happened to be below data by factors of 1.5 $\\div$ 2. Therefore\, all tested model s underestimate the production of the most energetic charged $\\pi$ and K mesons by the primary cosmic nucleons by the same factors at energies from $10^{2}$ up to $10^{7}$ GeV.\n\nhttps://events.sinp.msu.ru/event/8/contri butions/427/ LOCATION: Физический ф-т\, ауд 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/427/ END:VEVENT BEGIN:VEVENT SUMMARY:LOCAL MAGIC NUCLEI: PROPERTIES AND STRUCTURE DTSTART;VALUE=DATE-TIME:20220714T140800Z DTEND;VALUE=DATE-TIME:20220714T143500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-585@events.sinp.msu.ru DESCRIPTION:Speakers: Igor Boboshin (Skobeltsyn Institute of Nuclear Physi cs\, Lomonosov Moscow State University\, Moscow\, Russia)\nA new kind of a tomic nuclei\, local magic nuclei (l.m.n.)\, have been discovered recently [1]. We present in this report a current state of relevant research.\nL.m .n. have the same observable features as traditional magic nuclei\, i.e. e levated energies of the first 2+ excitations\, increased nucleon separatio n energies\, and so on. However\, unlike the traditional magic nuclei\, l. m.n. do not have magic isotopes or isotones\, and\, in addition\, they man ifest at non-conventional magic numbers. They are described not by ‘magi c numbers’ but by ‘miraculous pairs’\, such as (N\, Z) and similar\, where the underline denotes a number that loses its magicity in another p air. Examples of observed pairs are (N\, Z) = (32\, 20)\, (40\, 28)\, (56\ , 40)\, (64\, 50)\, (82\, 64) etc. \nL.m.n. arise due to the compact (like a hole) gaps inside the traditional shells. This conclusion follows from our studies of the one-nucleon stripping and pick-up reactions. As we supp ose this shell evolution is due to nucleon-nucleon interactions\, and the proton-neutron tensor force makes a decisive contribution. On this basis\, we have constructed the diagrams of the nucleon orbit energies\, which su ccessfully describe above processes. These diagrams predict new magic numb ers as well.\nAs a result\, we obtain the two-dimensional (N\, Z) shell sc heme\, which develops the traditional Goeppert-Mayer – Jensen scheme.\n\ n\n1. Igor Boboshin // Preprint of Skobeltsyn Institute of Nuclear Physics \, Lomonosov Moscow State University\, http://www.sinp.msu.ru/en/preprint/ 25701.\n\nhttps://events.sinp.msu.ru/event/8/contributions/585/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/585/ END:VEVENT BEGIN:VEVENT SUMMARY:Neutron star properties with density dependent baryonic interactio ns DTSTART;VALUE=DATE-TIME:20220713T143000Z DTEND;VALUE=DATE-TIME:20220713T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-279@events.sinp.msu.ru DESCRIPTION:Speakers: Semyon Mikheev (Faculty of Physics. M.V.Lomonosov Mo scow State University)\nNeutron stars (NS) are hydrostatically equilibrium stars\, the matter of which consists mainly of neutrons and has a density of the order of the nuclear one. In NS a wide range of extreme states of matter is realized\, therefore study of NS is important not only for astro physics\, but also for nuclear physics. Renewed interest in NS physics has been inspired by first registration of gravitational signal from the merg er of two NS [1]. In recent years radii and masses of a number of NS were measured and NS with large masses were discovered. \nAlthough in the simpl est version the matter of NS consists of neutrons\, protons\, electrons\, and muons\, it is well known that at densities several times higher than t he saturation density of nuclear matter\, hyperons can arise. When the den sity increases\, Λ-hyperons are supposed to be the first to appear\, and we study NS consisting of nucleons\, leptons\, and Λ-hyperons. In this wo rk we focus on the properties of ΛN-interaction\, known from studies of hypernuclei\, and their influence on the characteristics of NS.\nIn order to calculate the equation of state of NS matter we use the self-consistent Skyrme-Hartree-Fock (SHF) model - generally accepted method for describin g baryonic systems [2\,3]. Within this model there are two alternative way s to describe nonlinear effects: dependence on nucleon density $(\\rho^\\a lpha)$ and three-body ΛNN force. These two options are equivalent in symm etric matter if α = 1 and work equally good for hypernuclei. However they are nonequivalent in NS matter and this choice can play a crucial role in calculation of NS characteristics [4]. The choice of α in the density dependence case also can affect these characteristics significantly.\nIn t he present work we examine a number of sets of parameters of hyperon-nucle on and hyperon-hyperon potentials. We calculate different characteristics of NS such as mass\, radius and tidal deformability and investigate their dependence on the properties of interactions.\n\nhttps://events.sinp.msu.r u/event/8/contributions/279/ LOCATION: Физический ф-т\, 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/279/ END:VEVENT BEGIN:VEVENT SUMMARY:EXPERIMENTAL INVESTIGATIONS OF THE 9.2\, 15.1\, AND 24.3 keV NUCLE AR TRANSITIONS IN 227Th AND CONSEQUENCES OF THEIR RESULTS FOR SPIN-PARITY ASSIGNMENTS TO LOW-LYING STATES OF 227Th DTSTART;VALUE=DATE-TIME:20220712T145000Z DTEND;VALUE=DATE-TIME:20220712T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-442@events.sinp.msu.ru DESCRIPTION:Speakers: Anvar Inoyatov (Joint Institute for Nuclear Research \, Dubna\, NPI ASUzR\, Ulugbek\, Uzbekistan)\nThe 9.2\, 15.1\, and 24.3 ke V nuclear transitions in 227Th were studied in the --decay of 227Ac by means of the internal conversion electron spectroscopy (ICES) using the co mbined electrostatic electron spectrometer [1] and the computer code SOFIE (see\, e.g.\, Ref. [2]) to clarify the spin-parity assignment of the grou nd state and the two lowest excited states in 227Th. Results obtained were published in [3\,4\,5]. \nEnergies of (9244.6±0.8)\, (15098.6±1.0)\, an d (24343.1±1.1) eV were determined for the 9.2\, 15.1\, and 24.3 keV tran sitions\, respectively\, as well as the mixed character (M1+E2) for each o f them with the δ2(E2/M1) values of (0.695±0.248)\, (0.0012±0.0003)\, a nd (0.0116±0.0004)\, respectively. An agreement within ±0.1 eV was found among the above transition energy values and those obtained from their in terlinked relations based on the decay scheme. Using the gamma-ray spectro scopy\, energy values of (24342.9±1.2)\, (28613.3±1.7)\, and (37860.2±2 .0) eV were obtained for the 24.3\, 28.6\, and 37.8 keV transitions in 227 Th\, respectively. The almost zero difference of (0.2±1.6) eV for the 24. 3 keV transition energies determined by the ICES and gamma-ray methods dem onstrates a reliability of the transition energy determination in the pres ent work.\nOur investigation removed the uncertainty in the multipolarity character of the 15.1 keV transition. Determined [4] nonzero value of δ(E 2/M1) parameter for the 9.2 keV transition questioned the current theoreti cal interpretation of low-lying levels of 227Th. Our calculations [4] pref er the 1/2+\, 3/2+\, and 3/2+ sequence instead of the adopted 1/2+\, 5/2+ and 3/2+ one for the 0.0\, 9.2\, and 24.3 keV levels\, respectively. In su ch a case\, the assignment Iπ=5/2+ for any of these levels is excluded. N evertheless\, it is necessary to use more precise theoretical approaches t o prove the proposed interpretation of the current experimental data. New experimental information on low-energy transitions connecting low-lying le vels in similar nuclei is desirable as well.\n\n1. Ch. Briançon et al.\, Nucl. Inst. Meth\, 221 (1984) 547.\n2. A. Inoyatov et al.\, J. Elect. Spec . Relat. Phenom.\, 160 (2007) 54.\n3. A. Kovalík et al.\, Eur. Phys. J. A \, 55 (2019) 131.\n4. A. Kovalík et al.\, Phys. Lett. B\, 820 (2021) 1365 93.\n5. A. Kovalík et al.\, Eur. Phys. J. A\, 57 (2021) 285.\n\nhttps://e vents.sinp.msu.ru/event/8/contributions/442/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/442/ END:VEVENT BEGIN:VEVENT SUMMARY:Smoking gun of nuclear clusterization in collisions of light relat ivistic nuclei DTSTART;VALUE=DATE-TIME:20220715T143000Z DTEND;VALUE=DATE-TIME:20220715T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-321@events.sinp.msu.ru DESCRIPTION:Speakers: Aleksandr Svetlichnyi (INR RAS\, MIPT(NRU))\nInterac tions of C nuclei with various targets were studied in BM@N experiment at NICA [1]. Studies of O–O collisions are foreseen in future experiments a fter the LHC upgrade [2] as a part of a program to scan the size of collid ing systems. As follows from calculations [3\,4]\, the admixture of the a lpha-clustered states in C and O leads to a triangular modulation of ellip tic flow from the overlap region of colliding nuclei. It is also known [5] that forward alpha-particles are produced in fragmentation of relativisti c O in nuclear photoemulsion. This suggests the impact of alpha-clusteriza tion in O also on spectator matter. First calculations [6] of yields of secondary nuclei (He\, Li\, Be\, B\, C\, N) from fragmentation of O with o ur Abrasion-Ablation Monte Carlo for Colliders model taking into account p re-equilibrium clusterization of spectator matter (AAMCC-MST) [7] demonst rated general agreement with data [5]. However\, the production of pairs and triplets of alphas was essentially underestimated together with the pr oduction of carbon [6] with respect to measurements [5].\n In order to re move this discrepancy\, in the present work AAMCC-MST was extended by acco unting for clustered states in nucleon configurations of initial O in addi tion to MST-clustering after the abrasion stage. Three nuclear density pro files in O based on [4\,8] were implemented in AAMCC-MST to sample the pos itions of neutrons and protons in O\, including one with accounting for cl ustered states. Results of calculations with all three profiles and with d ifferent sizes of intranuclear alpha-clusters were compared with the data on fragmentation of O [5]. While the production of alpha-particles is und erestimated for all the parameterizations of nuclear densities in O\, the results with the clustered nuclear density appear to be closer to the data . Further development of AAMCC-MST on the basis of the hierarchical cluste ring is planed.\n\n[1] M. Kapishin\, JPS Conf. Proc. 32 (2020) 010093\n[2] Z. Citron et al.\, CERN Yellow Rep. Monogr. 7 (2019) 1159\n[3] W. Broniow sky et al.\, Nucl. Phys. A 1005 (2021) 121763 \n[4] S.H. Lim et al.\, Phys . Rev. C 99 (2019) 044904\n[5] M. El-Nagdy et al.\, J. Phys. Commun. 2 (20 18) 035010\n[6] A. Svetlichnyi et al.\, PoS\, EPS-HEP2021 (2022) 310\n[7] R. Nepeivoda\, et al.\, Particles 5 (2022) 40 \n[8] J. He et al.\, Phys Re v C 104 (2021) 044902\n\nhttps://events.sinp.msu.ru/event/8/contributions/ 321/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/321/ END:VEVENT BEGIN:VEVENT SUMMARY:Validation of nuclear de-excitation models of Geant4 toolkit DTSTART;VALUE=DATE-TIME:20220712T103500Z DTEND;VALUE=DATE-TIME:20220712T105500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-202@events.sinp.msu.ru DESCRIPTION:Speakers: Roman Nepeivoda (INR\, Moscow and MIPT)\nGeant4 is a powerful Monte Carlo modeling toolkit [1] to describe the propagation and interactions of particles and nuclei in various media. It was originally designed for experiments at the LHC\, but its area of application is rapid ly extending well beyond high energy physics to low energy nuclear physics \, astrophysics\, space science\, medical physics and radiation protection [2]. \n\nNuclear reactions induced by hadrons and nuclei are modeled by G eant4 as multistage processes. In particular\, the Binary Cascade (BIC) [3 ] and Liege Intranuclear Cascade (INCL) [4] models are used to simulate th e emission of fast particles at the first cascade stage resulting in an ex ited nuclear residue. Depending on the excitation energy calculated per nu cleon of the residual nucleus E*/A various decay processes take place. At E*/A<2 MeV the evaporation of neutrons\, protons and alpha-particles from residual nuclei [5] is modeled\, while the Statistical Multifragmentation Model (SMM) [6] is employed to simulate the decays into nucleons and multi ple nuclear fragments at higher excitation energies. Nuclear de-excitation models of Geant4 were validated in its early version of 9.1 [7].\n\nIn th e present work we validate nuclear de-excitation models of recent Geant4 v ersions 10.4 and 11.0 by means of standalone tests for specific residual n uclei and excitation energies. Calculation results are compared to measure d energy spectra of evaporated neutrons\, protons and alpha-particles [8] and to charge distributions of secondary fragments calculated with FORTRAN version of SMM [6]. A detailed analysis of the momentum distributions of SMM products is performed and several suggestions to improve the results o f the modeling were reported to Geant4 developers. After the revisions\, t he latest versions of de-excitation models of Geant4 can be used in our Ab rasion-Ablation Monte Carlo for Colliders model (AAMCC) [9] to simulate th e properties of spectator matter in collisions of relativistic nuclei. \n[ 1] J. Allison et al.\, Nucl. Sci. IEEE Trans. 53 (2006) 270\n[2] J. Alliso n et al.\, Nucl. Inst. Meth. A 835 (2016) 186\n[3] G. Folger\, V. Ivanchen ko\, H. Wellisch. Eur. Phys. J. A. 21 (2004) 407\n[4] S. Leray et al.\, Nu cl. Data Sheets 118 (2014) 312\n[5] V.Weisskopf\, Phys. Rev. 52 (1937) 295 \n[6] A.S. Botvina et al.\, Nucl. Phys. A. 584 (1995) 737\n[7] I.A. Psheni chnov et al.\, Nucl. Inst. Meth. B 268 (2010) 604\n[8] R.J. Charity\, Phys . Rev. C 82 (2010) 014610\n[9] R. Nepeivoda et al.\, Particles 5 (2022) 40 \n\nhttps://events.sinp.msu.ru/event/8/contributions/202/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/202/ END:VEVENT BEGIN:VEVENT SUMMARY:Performance of the precise electromagnetic calorimeter ALICE/PHOS and upgrade plans DTSTART;VALUE=DATE-TIME:20220712T103000Z DTEND;VALUE=DATE-TIME:20220712T105000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-216@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitri Peresunko (NRC Kurchatov institute)\nThe phot on spectrometer (PHOS) of the ALICE experiment is a high-granularity PbWO4 crystal calorimeter with avalanche photodiode (APD) readout. Its primary physics goal is the measurement of direct photon and neutral meson spectra and correlations in pp\, p-A and A-A collisions. PHOS participated in LHC Run 1 (2009-2013) and Run 2 (2015-2018)\, during which a large amount of physical data were collected in pp\, p-Pb and Pb-Pb collisions.\n\nThe cho ice of active material with small Molière radius allows PHOS to operate i n a high-multiplicity environment and to reconstruct neutral pions\nby two -photon decays up to very high transverse momenta ~60 GeV/c. In order to i ncrease the light yield of the crystals and reduce electronic noise\,\nPHO S is cooled down and kept at a constant temperature of -25^{o} C. This res ulted in excellent energy and position resolutions. Dedicated L0 and L1 tr iggers were used to increase collected integrated luminosity during data t aking.\n\nWe will present an overview of the PHOS performance during Runs 1 and 2 and plans for an upgrade for LHC Run 4 and beyond with the aim of improving the time and energy resolution and extending the dynamic range d own to low energies. This goal can be achieved by upgrading the photodetec tors from APD to multi-pixel photon counters (MPPC)\, upgrading the front- end electronics and the detector mechanics. The expected improvements of t he time and energy resolutions will be presented and the resulting reducti on of systematic uncertainties of ongoing analysis and new possibilities w ill be discussed.\n\nhttps://events.sinp.msu.ru/event/8/contributions/216/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/216/ END:VEVENT BEGIN:VEVENT SUMMARY:Estimation of the degree of agreement of empirical random vectors using central moment functions DTSTART;VALUE=DATE-TIME:20220712T122000Z DTEND;VALUE=DATE-TIME:20220712T123000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-509@events.sinp.msu.ru DESCRIPTION:Speakers: Victor Vakhtel (Voronezh State University)\, Daniil Kostomakha (Voronezh State University)\nEstimation of the degree of agreem ent of empirical random vectors using central moment functions.\n\nRabotki n V. A.\, Bliznyakov N.M.\, Vakhtel V.M.\, Kostomakha D.E.\nVoronezh State University\, Voronezh\, Russia\nE-mail: vakhtel@phys.vsu.ru\n\n\nA method ology for estimating the degree of agreement M of empirical random vectors (RV):ν(k)=〖(ν〗_0\,ν_1\,…\,ν_l) of frequenciesν_i (k=i) of coun ts k of registered particles by samples of small volume\n∑_0^l▒〖ν_i =n<20〗\,0≤ν_i≤n\nand average ( k) ̅<5 was developed.\nThe degree o f agreement of the vectors is estimated by the test statistics of the clos eness of the projections of the fractional order functions 1\n\nhttps://ev ents.sinp.msu.ru/event/8/contributions/509/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/509/ END:VEVENT BEGIN:VEVENT SUMMARY:COMPACT NEUTRON CALIBRATION SOURCE BASED ON 252Cf RADIONUCLIDE AND A SILICON SEMICONDUCTOR DETECTOR DTSTART;VALUE=DATE-TIME:20220713T070000Z DTEND;VALUE=DATE-TIME:20220713T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-221@events.sinp.msu.ru DESCRIPTION:Speakers: Maxim Trushin (NRC "Kurchatov Institute" - PNPI)\nTh is work will demonstrate the operation of a model of compact neutron calib ration source. Compact neutron calibration source is highly needed for cal ibration and response function determination of WIMP-oriented dark matter detectors and electron antineutrino detectors. This could be done with neu tron calibration source with either known neutron energy spectrum\, or by time-of-flight (ToF) neutron energy reconstruction. \nSuggested neutron ca libration source is based on Californium-252 radionuclide which undergoes spontaneous fission producing neutrons with a continuous spectrum and a se miconductor detector. The latter upon registration of fission fragments si gnal provides a time reference of the moment of neutron creation. \nFor r egistration of the fission fragments signal we used a silicon semiconducto r detector with thin entrance window. Performed investigations have proved that such a detector may withstand exposure of up to 10^9 of fission frag ments before the critical degradation of its operating parameters occurs [ 1]. The spectra of neutrons and γ-quanta produced during the spontaneous fission of 252Cf nuclei were recorded with help of PMMA scintillator equip ped with photomultipliers of type 97. The scintillator represents a cylind er with a wall thickness of 7 cm and an internal diameter of 13 cm. In the center of scintillator cylinder a 252Cf source and a semiconductor detect or were placed. \nThese two registration channels for neutrons and fission fragments\, respectively\, operates in the coincidence mode in order to e stablish the correlation between the fission fragments and neutron / γ-qu anta signals\, which\, in turn\, can be separated by accounting the delay time of the neutron arrival. Therefore\, the possibility of using a combin ation of the semiconductor detector and 252Cf radionuclide as a compact ne utron calibration source will be demonstrated.\n\n1. S.V. Bakhlanov\, A.V. Derbin\, I.S. Drachnev\, O.I. Konkov\, I.M. Kotina\, A.M. Kuzmichev\, I.S . Lomskaya\, M.S. Mikulich\, V.N. Muratova\, N.V. Niyazova\, D.A. Semenov\ , M.V. Trushin\, E.V. Unzhakov\, Journal of Physics: Conference Series 210 3\, 012138 (2021).\n\nhttps://events.sinp.msu.ru/event/8/contributions/221 / LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/221/ END:VEVENT BEGIN:VEVENT SUMMARY:NEW RESULTS FOR DOUBLE BETA DECAY OF 106Cd DTSTART;VALUE=DATE-TIME:20220714T145000Z DTEND;VALUE=DATE-TIME:20220714T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-341@events.sinp.msu.ru DESCRIPTION:Speakers: NIKOLAY RUKHADZE (JINR)\nSearch for β+β+\, β+EC\, EC/EC decay of 106Cd was performed at the Modane underground laboratory ( LSM\, France\, 4800 m w.e.) using the low-background multi-detector spectr ometer TGV-2 [1] and 106Cd with enrichment of 99.57%. The detector part of the spectrometer is composed of 32 HPGe planar type detectors each with s ensitive volume of 20.4 cm2  0.6 cm. 16 foils of 106Cd with a thickness of 70(10) μm\, and a total mass of ~23.2 g (~1.3 × 1023 atoms of 106Cd) were inserted between the entrance windows of detectors. The distance fro m foils to detectors is about 1.5 mm. The 16 pairs of detectors with cadmi um foils were mounted one over another in a common cryostat tower. The ene rgy resolution of detectors are ranged from 3.0 to 4.0 keV at 1332 keV γ- line of 60Co. The design of the detector part of TGV-2 delivers high detec tion efficiency for useful events (single and multiple coincidence) and st rong suppression of external background. The passive shielding of the TGV- 2 consist of copper (20 cm)\,\, an airtight box against radon\, lead ( 10 cm) and a neutron shielding made of borated polyethylene (16 cm). Ad ditional suppression of background was achieved by using coincidence techn iques and filtering electronic and microphone noise in the low energy regi on (<50 keV) by digitizing the detector response with different shaping ti mes (2 and 8 μs) [1]. Double coincidences between two characteristic KX- rays of Pd detected in neighboring detectors were analyzed to search for 2 νEC/EC decay of 106Cd to the ground 0+ state of 106Pd. From the prelimina ry calculation of experimental data accumulated with TGV-2 spectrometer an d ~23.2 g of 106Cd during 43000 h (phase III of experiment TGV-2)\, new li mit on 2νEC/EC decay of 106Cd to the ground 0+ state of 106Pd - T1/2 > 1. 7 × 1021y (90% C.L) was obtained. Limits on 2νECEC decay of 106Cd to exc ited states of 106Pd and 2νβ+β+\, 2νβ+EC decay of 106Cd to the ground 0+\, and excited states of 106Pd were significantly improved in compariso n with previous phase II of the TGV-2 experiment [2]. They are ranged from 5.0 × 1020 y to 1.2 × 1021 y at 90% C.L. \n\n 1. P. Beneš et al.\ ,Nucl. Instr. Meth. in Phys. Res. A 569\, 737 (2006)\n 2. N. I. Rukha dze et al.\, J. Phys.: Conf. Ser. 375\, 042020 (2012)\n\nhttps://events.si np.msu.ru/event/8/contributions/341/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/341/ END:VEVENT BEGIN:VEVENT SUMMARY:Total and partial shear viscosity of hadrons in Au+Au collisions a t intermediate energies accessible to NICA DTSTART;VALUE=DATE-TIME:20220715T091000Z DTEND;VALUE=DATE-TIME:20220715T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-223@events.sinp.msu.ru DESCRIPTION:Speakers: Evgeny Zabrodin (SINP MSU)\nWe calculate the total a nd partial shear viscosity of hadrons\nproduced in central gold-gold colli sions at intermediate energies. For\ncalculations of the collisions the tr ansport model UrQMD is employed.\nThe shear viscosity is obtained within t he framework of Green-Kubo\nformalism. The hadron resonance gas (HRG) mode l is used to determine\ntemperature and chemical potentials of baryon char ge and strangeness\nout of the microscopic model calculations. Then\, we d etermine the\npartial viscosity of main hadron species\, such as nucleons\ , pions\,\nkaons and Lambdas\, by studying the relaxation of hot and dense nuclear\nmatter in the box with periodic boundary conditions.\nIt is foun d that the decrease of the beam energy from\n$E_{lab} = 40$~AGeV to 10~AGe V leads to rise of baryon shear viscosity\naccompanied by drop of shear vi scosity of mesons. In contrast to that\nof non-strange hadron species\, th e shear viscosity of kaons and Lambdas\nremains independent on energy with in the studied energy range. Its\nratio over the entropy density increases with the drop of temperature\nand rise of baryon chemical potential.\n\nh ttps://events.sinp.msu.ru/event/8/contributions/223/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/223/ END:VEVENT BEGIN:VEVENT SUMMARY:4G model of fitting RMS radius of proton DTSTART;VALUE=DATE-TIME:20220715T153000Z DTEND;VALUE=DATE-TIME:20220715T155000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-579@events.sinp.msu.ru DESCRIPTION:Speakers: Laksminarayana S (Andhra University\, Visakhapatnam- 03\,AP\, INDIA)\nIn our 4G model of final unification\, along with three l arge atomic gravitational constants pertaining to electromagnetic\, strong and weak interactions\, we have proposed the existence of a strong nuclea r charge of magnitude $e_s \\cong 2.9463591e$ and existence of electrowe ak fermion of rest energy $M_wc^2\\cong 584.725$ GeV. With reference to p rotons\, pions and weak bosons\, we noticed that\, $\\frac{m_p}{M_w}\\cong \\frac{\\sqrt{\\left(m_\\pi\\right)^{0} \\left(m_\\pi\\right)^{ \\pm }}}{ \\sqrt{ \\left(m_z\\right)^{0}\\left(m_w\\right)^{\\pm}}}\\cong 0.0016$ an d this number seems to play a crucial role in understanding nuclear stabil ity and binding energy. Increasing number of free nucleons\, increasing nu clear radii and increasing asymmetry about stable mass number play importa nt role in reducing the nuclear binding energy. Unified binding energy coe fficient can be expressed with\, $B_0 \\cong \\sqrt{\\left(\\frac{e_s^2}{8 \\pi \\epsilon_0 \\left(\\frac{\\hbar}{m_pc}\\right)}\\right)\\left(\\fra c{e^2}{8 \\pi \\epsilon_0 \\left(\\frac{\\hbar}{m_pc}\\right)}\\right)}\\c ong 10.1$ MeV. A four term nuclear binding energy relation for $\\left[\\l eft(Z \\geq 3\\right) \\textrm{and}\\left(N\\geq Z\\right)\\right]$ can be expressed as\, $BE\\cong \\left[A-\\left(1+0.0016\\left(\\frac{Z^2+A^2}{2 }\\right)\\right)-A^{\\frac{1}{3}}-\\left(\\frac{\\left(A_s-A\\right)^2}{A _s}\\right)\\right]\\left(10.1\\right)$ MeV where $A_s\\cong \\left(2Z\\r ight)+0.0016\\left(2Z\\right)^2\\cong \\left(2Z\\right)+0.0064Z^2$ = Estim ated mass number close to stability zone. Based on these relations\, we no ticed a relation for fitting RMS radius of proton as\, $R_p \\cong \\sqrt{ \\frac{4 \\pi \\epsilon_0 \\hbar^3}{e_s^2 m_p^2 c}} \\cong \\sqrt{\\frac{\ \alpha_s}{\\alpha}}\\left(\\frac{\\hbar}{m_p c}\\right)\\cong 0.835$ fm wh ere $\\alpha_s \\cong 0.1152$ represents the strong coupling constant. It needs further study.\n\nhttps://events.sinp.msu.ru/event/8/contributions/5 79/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/579/ END:VEVENT BEGIN:VEVENT SUMMARY:Role of Quarks in Nuclear Structure DTSTART;VALUE=DATE-TIME:20220714T145500Z DTEND;VALUE=DATE-TIME:20220714T151500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-582@events.sinp.msu.ru DESCRIPTION:Speakers: Genis Musulmanbekov (JINR)\nWe propose semi-empirica l quark model of nuclear structure that is based on the quark model of nuc leon structure\, Strongly Correlated Quark Model (SCQM). Nuclei are constr ucted due to junctions of SU(3) color fields of quarks of neighbor nucleon s [1]. According to SCQM\, arrangement of nucleons within nuclei reveals t he emergence of the face-centered cubic (FCC) symmetry [2]. The model of nuclear structure becomes isomorphic to the shell model and\, moreover\, c omposes the features of cluster models. Binding of nucleons in stable nucl ei are provided by quark loops which form three and four nucleon correlati ons. On the quark level the nuclear shell closures starting from s-shell c orrespond to the octahedral symmetry. The closure of a subsequent shells (p\, d\, f\, ...) leads to rearrangement and disappearance of the previo us ones\, i.e. to no-core shells. Quark loops leading to four-nucleon cor relations are responsible for the binding energy enhancement in even-even nuclei which are formed by virtual alpha-clusters. Two neighbor virtual a lpha-clusters possess one common nucleon which couples them. The model de scribes the "magic" numbers without spin-orbital coupling of the shell mo del. According to the model "halo" nuclei emerge according to quark loops resulting in three nucleon correlations. The model allows to describe nucl ear deformation\, predict the boundary on nuclear stability and etc.\n\nRe ferences\n\n[1] G. Musulmanbekov in Frontiers of Fundamental Physics\, New York\, Kluwer Acad/Plenum Publ.\, 2001\, p. 109 - 120.\; PEPAN Lett.\, 20 21\, v.18\, N5\, p. 548-558.\n\n[2] G. Musulmanbekov and N.D. Cook\, Phys. Atom. Nucl. 71\, 1226\n\nhttps://events.sinp.msu.ru/event/8/contributions /582/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/582/ END:VEVENT BEGIN:VEVENT SUMMARY:ACCELERATOR BASED NEUTRON SOURCE VITA DTSTART;VALUE=DATE-TIME:20220713T151000Z DTEND;VALUE=DATE-TIME:20220713T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-225@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Taskaev (Budker Institute of Nuclear Physics) \nA compact accelerator-based neutron source VITA has been proposed and cr eated at the Budker Institute of Nuclear Physics in Novosibirsk\, Russia. The source comprises an original design tandem accelerator\, solid lithium target\, and a neutron beam shaping assembly. At present\, the facility p rovides the production of protons or deuterons\, the formation of neutron fluxes of almost any energy range: cold\, thermal\, epithermal\, over-epit hermal\, monoenergetic or fast\, as well as the generation of 478 keV\, 51 1 keV or 9.17 MeV photons\, -particles and positrons. \nDeveloped facil ity became a prototype of neutron sources for the boron neutron capture th erapy clinics. The first commercial neutron source is installed at the Xia men Humanity Hospital in China. The next two neutron sources are made for National Oncological Hadron Therapy Center in Pavia (Italy) and for Nation al Medical Research Center of Oncology in Moscow (Russia).\nThe facility i s used for the development of the boron neutron capture therapy technique\ , namely: i) to study the effect of neutron radiation on cell cultures and laboratory animals\, ii) to treat large pets with spontaneous tumors\, ii i) to develop dosimetry tools\, iv) to test new boron delivery drugs.\nThe facility is used for a number of other applications\, namely: i) for meas uring the cross section and the yield of nuclear reactions\, ii) for study ing radiation blistering of metals under ion implantation\, iii) for radia tion testing of advanced materials for ITER and CERN\, iv) for measuring t he thickness of the lithium layer\, v) for studying the composition of fil ms by back-scattered protons\, vi) for in-depth investigation of the 11B(p \,) neutronless fusion reaction\, etc.\nThe report will describe the neutron source VITA\, present and discuss the results obtained\, and d eclare plans.\nThis research was supported by Russian Science Foundation\, grant No. 19-72-30005.\n\nhttps://events.sinp.msu.ru/event/8/contribution s/225/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/225/ END:VEVENT BEGIN:VEVENT SUMMARY:Quantum-quasiclassical approach for few-body problems in atomic an d nuclear physics DTSTART;VALUE=DATE-TIME:20220715T120000Z DTEND;VALUE=DATE-TIME:20220715T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-584@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Melezhik (BLTP JINR)\nWe discuss the effici ent quantum-quasiclassical method developed by V.S. Melezhik with co-autho rs [1-4]\, which has been successfully applied to calculate various few-bo dy processes and has made it possible to resolve a number of topical probl ems in atomic [1\,3-5]\, mesoatomic [2]\, and nuclear physics [6]. In this approach\, a few-body quantum problem is reduced to the simultaneous inte gration of a system of coupled quantum and classical equations: the time-d ependent Schrödinger equation\, which describes the quantum dynamics of slow light paricles\, and the classical Hamilton equations\, describing th e fast variables of heavy particles. \nRecently [5]\, the approach was ext ended and adapted for quantitative description of pair collisions of light slow Li atoms with heavy Yb+ ions in the confined geometry of the hybrid atom-ion trap. On the basis of these calculations\, a new method for symp athetic cooling of ions in a RF Paul trap was proposed: to use cold buffer atoms for this purpose in the region of atom-ion confinement-induced reso nance [5]. \nThis approach also made it possible to perform calculations o f the breakup cross sections into the low-energy region (up to 10 MeV/nucl eon)\, inaccessible so far to other methods\, for the 11Be breakup on a he avy target [6].\nThe developed quantum-quasiclassical method opens new pos sibilities in the investigation of other hot few-body quantum systems.\n\n 1. V.S. Melezhik and P. Schmelcher\, Phys. Rev. Lett. 84\, 1870 (2000).\n2 . V.S. Melezhik\, Hyperfine Int. 138\, 351 (2001).\n3. V.S. Melezhik\, J.S . Cohen\, and C.Y. Hu\, Phys. Rev. A69\, 032709 (2004).\n4. V.S. Melezhik and L.A. Sevastianov\, Lecture Notes in Comp. Sci. 10684\, 449 (2017).\n5. V.S. Melezhik\, Phys. Rev. A103\, 053109 (2021).\n6. D. Valiolda\, D. Jan sejtov\, and V.S. Melezhik\, The European Phys. J. A58\, 34 (2022).\n\nht tps://events.sinp.msu.ru/event/8/contributions/584/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/584/ END:VEVENT BEGIN:VEVENT SUMMARY:Method for processing and analysis of homogeneity of large sets of small-volume samples of low-intensity radiation streams DTSTART;VALUE=DATE-TIME:20220712T123000Z DTEND;VALUE=DATE-TIME:20220712T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-305@events.sinp.msu.ru DESCRIPTION:Speakers: Victor Vakhtel (Voronezh State University)\nMethod f or processing and analysis of homogeneity of large sets of small-volume sa mples of low-intensity radiation streams.\n\nRabotkin V. A.\, Bliznyakov N .M.\, Vakhtel V.M.\, Kostomakha D.E.\nVoronezh State University\, Voronezh \, Russia\nE-mail: vakhtel@phys.vsu.ru\n\nA method for processing and anal yzing sequences of samples of variation series of values of identifiers I( ν(.)) of random vectors (RV) - ν for their corresponding samples of smal l volume n≤20 of counts k_i=0\;1\;2… of registered particles was propo sed. The identifier I(ν(.)) is a functional in the form of a scalar produ ct RV ν(.)=〖(ν〗_0\,ν_1\,…\,ν_l) of frequencies ν_i (k=i) of val ues of counts k_i in the sample\n∑_0^l▒〖ν_i=n<20: I(ν)=I(ν|a)=( νa)=ν_0 a_0+⋯+〗 ν_l a_l\nwhere a=〖(a〗_0\,…\,a_l) – is not a randomly given vector. For a given number M of vectors ν(.) the frequenc y distribution of I(ν) values represents sequences of ordered groups of p eaks formed by:\n similar in components ν_i RV\n of homogeneous peaks for med by homogeneous RVs.\nTo evaluate the homogeneity of RV and peaks\, it was proposed a test statistic G and a criterion of agreement based on the metric\nG=1/q [∑_(l=1)^l▒〖[(x_im-x_ir )/(x_im+x_ir )^2]〗]^(1/2)\,0 ≤G≤1.\nIt was shown that the homogeneity estimation of peaks considere d also as random vectors m and rM_(1\,m)\,M_(2\,m)\,…\,M_(l\,m)\;M_(1\,r )\,M_(2\,r)\,…\,M_(l\,r) can be performed by the degree of their colline arity |M_m | |M_l |^(-1)∙M_m∙M_l=cosθ\, where θ-is the angle between vectors and equality of |M_m |=|M_r | modules.\nThe proposed method allow s identifying combinatorial types of RV\, predicting frequencies of their realization 1\n\nhttps://events.sinp.msu.ru/event/8/contributions/305/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/305/ END:VEVENT BEGIN:VEVENT SUMMARY:Simple explanation of the experimental 57Fe Mӧssbauer isomer shi ft of iron compounds DTSTART;VALUE=DATE-TIME:20220712T130000Z DTEND;VALUE=DATE-TIME:20220712T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-482@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Dedushenko (Lyalin Pereulok 24/26-43\, Moscow 101000\, Russia)\nAccording to the existing concept\, an increase in elec tron density on 57Fe nucleus must lead to a decrease in Mӧssbauer isomer shift (IS). The rise of oxidation state of iron (escape of electrons from the valence shell) usually leads to the decrease in IS\, which is explaine d by the shielding effects. \nWe suggest applying the approach of the vale nce shell hybridization to explain the regularities of the IS change [1]. It is easy to show that two electrons on 4s-orbital create the electron de nsity at the iron nucleus\, which is equivalent to the density created by the full set of fully filled 4s4pn3dm-hybridized orbitals:\n|ψ_s (0)|^2= ∑_(i=1)^(1+n+m)▒|_(sp^n ⅆ^m)^((i) ) (0)|^2 \,\nwhere n = 0…3 an d m = 0…5 are the numbers of the 4p and 3d-orbitals involved in the hybr idization. Using this property\, we can suggest that the directional chemi cal bonds\, which iron cation establishes with surrounding anions\, influe nce on the IS\; this influence being independent on the number of the bond s. Assuming that the IS is proportional to the average bond length\, we ca n explain the observed experimental dependencies. At the same time\, d and p-electrons do not create a density on the nucleus. But they affect the i onic radius of the iron ion and\, consequently\, affect the interatomic di stances. Moreover\, we concluded that the electron shell of each anion of the iron polyhedron can make noticeable additional contribution to the ele ctron density at the iron nucleus. This makes it possible to explain the d ependence of the IS on the iron coordination number.\n\nhttps://events.sin p.msu.ru/event/8/contributions/482/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/482/ END:VEVENT BEGIN:VEVENT SUMMARY:MODERN TECHNOLOGIES FOR THE PRODUCTION OF NUCLEAR MEDICINE ISOTOPE S DTSTART;VALUE=DATE-TIME:20220716T095000Z DTEND;VALUE=DATE-TIME:20220716T102500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-622@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Zherebchevsky (Saint-Petersburg State Unive rsity)\nIn modern nuclear medicine the main clinical information is obtain ed from observing the radiopharmaceuticals (by incorporating a radionuclid e into the pharmaceutical) distribution in the patient body. These pharmac euticals are a mixture of a biochemical agent and a radionuclide that emit s gamma quanta or positrons [1]. Diagnostic imaging with single-photon-emi tting radionuclides produces both planar images and single-photon emission computed tomography (SPECT) using a gamma camera. Radiopharmaceuticals la beled with positron-emitting radionuclides are used for positron emission tomography (PET). Nuclear medicine images depict anatomic\, functional\, a nd metabolic processes in human body [2].\nAnother important task in nucle ar medicine methods is the targeted delivery of radiopharmaceuticals to ca ncer cells for the subsequent non-surgical treatment of the tumors. The co mbination of radionuclide imaging with radionuclide therapy in theranostic s (therapy + diagnostics) can give an excellent result for effective early diagnosis and treatment of various localized oncological tumors and oncol ogical diseases with minimal side effects [3]. Therefore\, one can produce the radiopharmaceuticals with the following properties: half-life should be similar to the length of the medical procedure\, the radionuclide shoul d emit gamma rays (the energy of the gamma rays should be between 100 and 300 keV) together with emission of short-range charged particles (discrete spectrum for particles\, no recoil nuclei are produced when these particl es are emitted\, and they have a high linear energy of transfer)\, the rad ionuclide should be chemically suitable for incorporating into a pharmaceu tical without changing its biological behavior\, the pharmaceutical should localize only in the area of interest\, the radiopharmaceuticals should b e simple to prepare and have the low production price [1\,3].\nIn present overview\, the technologies for the production of nuclear medicine isotope s (main components of novel radiopharmaceuticals) together with new nuclea r materials and specific nuclear reactions are discussed. Also the experim ental and theoretical studies of the (p\, xn) reactions excitation functio ns in the energy range 6-40 MeV for the light and medium mass nuclear syst ems with production of the scandium\, technetium and antimony radionuclide s were carried out. Such radionuclides should be prospective for the Thera nostics methods.\nAcknowledgments: this research has been conducted with f inancial support from St. Petersburg State University (project No 93025435 ).\n\n1. P. F. Sharp\, H. G. Gemmell\, A. D. Murray\, Practical Nuclear Me dicine\, third edition\, \nSpringer–Verlag London Limited\, 2005.\n2. D. Volterrani\, P.A. Erba\, et.al.\, Nuclear Medicine: Methodology and Clini cal \napplications\, Vol.1\, Springer (2019).\n3. V. I. Zherebchevsky\, et .al.\,Bulletin of the Russian Academy of Sciences: Physics\, 2021\, \nVo l. 85\, No. 10\, pp. 1128–1135.\n\nhttps://events.sinp.msu.ru/event/8/co ntributions/622/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/622/ END:VEVENT BEGIN:VEVENT SUMMARY:AB INITIO STUDY OF RADII AND COULOMB SHIFTS OF SIX-NUCLEON ISOBAR ANALOGUE STATES DTSTART;VALUE=DATE-TIME:20220715T074000Z DTEND;VALUE=DATE-TIME:20220715T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-231@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitry Rodkin (VNIIA)\nThe problem of describing the size parameters (matter\, charge\, neutron radii) of nuclei in an ab init io approach attracts a wide range of researchers. The size parameters of e xotic nuclei\, in particular\, the size of halo (neuron or proton)\, have the greatest physical significance. \nIn the present work\, for these purp oses\, one of the most reliable and justified ab initio approaches\, No-Co re Shell Model (NCSM) [1]\, is used. Two different NN-potentials are explo ited in the calculations\, the first of which was obtained from the chiral effective field theory [2]\, and the second one – from nucleon scatteri ng data using the J-matrix inverse scattering method [3]. Both of these po tentials are universal\, they have been tested in calculations of binding energies\, spectra\, and other characteristics. The NCSM calculations are supplemented by the extrapolation procedure for the size parameters propos ed in Ref. [4]. \nIn this way\, in the current work material\, charge\, an d neutron radii as well as the size of the neutron halo of 6He isotope are computed. It is interesting to note that the results of calculations of t he halo size turned out to be the most stable.\nThe obtained results are i n a reasonable agreement with the modern experimental data. A comparative analysis of the results of other theoretical works is given.\n \n1. C. Stu mpf\, J. Braun\, R. Roth\, Phys. Rev. C 93\, 021301(R) (2016).\n2. A. M. S hirokov\, I. J. Shin\, Y. Kim\, M. Sosonkina\, P. Maris\, J. P. Vary\, Phy s. Lett. B 761\, 87 (2016).\n3. A. M. Shirokov\, J. P. Vary\, A. I. Mazur\ , T. A. Weber\, Phys. Lett. B 644\, 33 (2007).\n4. C. Forssen\, et al.\, P hys. Rev. C 97\, 034328 (2018).\n\nhttps://events.sinp.msu.ru/event/8/cont ributions/231/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/231/ END:VEVENT BEGIN:VEVENT SUMMARY:Studying neutron spectrum of photoneutron source of INR RAS DTSTART;VALUE=DATE-TIME:20220713T120000Z DTEND;VALUE=DATE-TIME:20220713T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-239@events.sinp.msu.ru DESCRIPTION:Speakers: Alexey Afonin (INR RAS)\nA W-Be-photoneutron neutron source IN-LUE based on a linear electron accelerator was created and inst alled at the Institute for Nuclear Research of RAS [1]. The shape of the n eutron spectrum and flux estimation was obtained earlier as a result of si mulation [2]. Due to the impossibility of measuring the neutron spectrum i n a wide range of energies within the source\, various methods of spectrum unfolding based on the solution of the inverse problem are usually used.\ nIn this work\, the results of unfolding the neutron spectrum into photone utron source chamber of the source are presented. As experimental data for unfolding\, we used the data of neutron activation analysis of samples ir radiated in the source (Ag\, Mg\, Mn\,Sb\, Ti\, etc.). To unfold the spect rum\, a number of well-known Nuclear Energy Agency (NEA) programs were use d [3]\, which implement various algorithms for solving the inverse problem . \nThis work also presents the results of measurements of the neutron flu x by various methods\, as well as their comparison.\n \n1. A.V.Andreev et al. // Bull. Russ. Acad. Sci.: Phys.\, 2017\, V. 81\, P. 748.\n2. N.Sobole vsky // Fifth Int. Conf. on Nucl. Fragm. (NUFRA2015). Kemer. Oct. 2015.\n3 . OECD Nuclear Energy Agency (NEA) Data Bank. Computer program services.\n \nhttps://events.sinp.msu.ru/event/8/contributions/239/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/239/ END:VEVENT BEGIN:VEVENT SUMMARY:HIGH ENERGY IONOLUMINESCENCE DECAY IN Al2O3 DTSTART;VALUE=DATE-TIME:20220712T141000Z DTEND;VALUE=DATE-TIME:20220712T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-286@events.sinp.msu.ru DESCRIPTION:Speakers: Askar Issatov (Joint Institute for Nuclear Research\ , Flerov Laboratory of Nuclear Reactions)\nTime-resolved ion beam induced luminescence (ionoluminescence\, IL) measurements\, especially those when the luminescence decay is registered after single ion impact may be effici ently used for real-time characterization of irradiating materials. Tempor al resolution of single ion technique\, not limited by beam pulse duration has enabled to reveal new interesting features in dynamics of dense elect ronic excitations in vicinity of swift ion trajectory [1\,2]. The start pu lses in such experiments are produced using electron emission from carbon foils generated by incoming ion. In this report we present the design of t he IL detection system at IC-100 FLNR JINR cyclotron in which the start pu lses are formed using electron emission immediately from the target surfac e. Such approach allows to narrow the instrumental response function and m inimize inaccuracy in lifetime measurements arising due to dispersion in i on velocities. The experimental set-up has been used for studies of time-r esolved ionoluminescence of intact and pre-damaged Al2O3 single crystals d uring single 1.2 MeV/amu Ne\, Ar\, Kr and Xe ion impact.\n1. Kazuie Kimura \, Wan Hong\, Junichi Kaneko\, Noriaki Itoh\, Nucl Instr Meth B 141 (1998) 425-430.\n2. Kazuie Kimura\, Sumit Sharma\, Anatoli Popov\, Nucl Instr Me th B 191 (2002) 48–53.\n\nhttps://events.sinp.msu.ru/event/8/contributio ns/286/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/286/ END:VEVENT BEGIN:VEVENT SUMMARY:NEUTRON TOMOGRAPHY AND DIFFRACTION IN THE STUDY OF THE CULTURAL HE RITAGE OF ANTIQUITY AND THE MIDDLE AGES DTSTART;VALUE=DATE-TIME:20220713T143000Z DTEND;VALUE=DATE-TIME:20220713T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-235@events.sinp.msu.ru DESCRIPTION:Speakers: Bulat Bakirov (FLNP JINR)\nThe study of cultural her itage by state-of-the-art scientific methods is an important interdiscipli nary field. Of interest are archaeological finds made of metal [1\, 2]. Su ch artifacts store valuable information about the technological\, economic and social level of ancient states. Corrosion processes occurring in meta ls also require careful study\, because it improves restoration and conser vation methodologies. However\, research methods traditional in archeology are often unacceptable due to their destructive nature or give incorrect information due to the small depth of penetration. In such cases\, neutron tomography and diffraction can be used [3].\nIn this work\, metal artifac ts of various ancient states located on the territory of modern Russia (Kr asnodar Krai\, Republic of Tatarstan\, etc.) were studied. Research was ca rried out at the facilities of the IBR-2 high-flux pulsed reactor: neutron radiography and tomography (NRT)\, DN-6 and DN-12 diffractometers. Using neutron tomography\, spatial variations in the phase composition were visu alized\, the degree of degradation and the spread of corrosion were determ ined\, and the original appearance of some artifacts was reconstructed. Th e phase composition was measured by neutron diffraction and Raman spectros copy. The data obtained made it possible to shed light on aspects of the c raft\, to identify archaeological objects.\nIn addition\, we have encounte red a number of problems\, the solution of which requires the use of new a lgorithms for tomographic reconstruction. This is an improvement in the qu ality of the resulting models\, a decrease in the time spent on routine ac tions\, and a decrease in the time for the experiment. Therefore\, modern approaches have been proposed and applied.\n\n1. Bakirov\, B.A.\, Kichanov \, S.E.\, Khramchenkova\, R.K. et al. J. Synch. Investig. 14\, (2020).\n2. Bakirov B.\, Saprykina I.\, Kichanov S. et al. J. Imaging. 7\, 129 (2021) .\n3. Podurets\, K.M.\, Kichanov\, S.E.\, Glazkov\, V.P. et al. Crystallog r. Rep. 66\, (2021).\n\nhttps://events.sinp.msu.ru/event/8/contributions/2 35/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/235/ END:VEVENT BEGIN:VEVENT SUMMARY:Compton scattering of entangled and decoherent annihilation photon s DTSTART;VALUE=DATE-TIME:20220712T153000Z DTEND;VALUE=DATE-TIME:20220712T155000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-369@events.sinp.msu.ru DESCRIPTION:Speakers: Sultan Musin (INR RAS(Moscow)\, MIPT(Moscow))\nAt pr esent\, positron emission tomography (PET) is one of the most effective in struments for the medical diagnostics. This method is based on detection o f two 511 keV gammas produced in positron-electron annihilation in organic tissue. According to the theory\, these annihilation photons are in enta ngled quantum state and have mutually perpendicular linear polarizations. This feature is suggested to be used in future generation of PET-scanners\ , where the angular correlations of scattered annihilation photons can be applied for suppression of backgrounds and improvement of image quality. I t is supposed that the angular correlations are quite different for the sc attered annihilation photons in entangled and decoherent quantum states th at allows the rejection of decoherent photons and hence to improve the sig nal/noise factor. Nevertheless\, the experimental comparison of Compton sc attering of entangled and decoherent annihilation photons was not done til l now. We constructed the setup that allows the identification of the quan tum state and the study of angular correlations of scattered annihilation photons. First experimental results on Compton scattering of entangled and decoherent annihilation photons are presented.\n\nhttps://events.sinp.msu .ru/event/8/contributions/369/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/369/ END:VEVENT BEGIN:VEVENT SUMMARY:FRAGMENTATION OF NUCLEI UNDER RADIATION ACTION OF VARIOUS TYPE DTSTART;VALUE=DATE-TIME:20220714T142900Z DTEND;VALUE=DATE-TIME:20220714T144900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-232@events.sinp.msu.ru DESCRIPTION:Speakers: Nikolay Novikov (Skobeltsyn Institute of Nuclear Phy sics Moscow State University\, Moscow\, Russia)\nFRAGMENTATION OF NUCLEI \nUNDER RADIATION ACTION OF VARIOUS TYPE\n\nN.V. Novikov\, N. G.Chechenin\ , A. A.Shirokova \nSkobeltsyn Institute of Nuclear Physics Moscow State Un iversity\, Moscow\, Russia\nE-mail: nvnovikov65@mail.ru\n\nThe study of th e mechanisms of formation and decay of an excited nucleus is important fo r describing the characteristics of fragments of a nuclear reaction [1]. T he applied significance of this problem lies in the use of various types o f radiation in experiments to determine the radiation effects in the elect ronics. The single event effects on onboard electronics can occur not only from direct medium ionization by primary ions\, but also from the effect of charged fragments of the nuclear reactions on the sensitive volumes of electronic circuit assemblies [2].\nWe study the influence of the primary particle of ionizing radiation on the mechanism of relaxation of the excit ed nucleus\, as well as on the distribution of heavy secondary ions with t he nuclear charge Z>2 during the passage of protons\, gamma rays and relat ivistic electrons through silicon. The interaction cross section and secon dary ion energy distribution at the moment of decay of an excited nucleus were calculated using the GEANT4 [3] and TALYS [4] programs. A new analyti cal approximation for secondary heavy ion distribution in terms of linear energy transfer is proposed.\n\n1. N.V. Novikov\, N.G. Chechenin\, N.V. Ch uvilskaya et al. Physics of Atomic Nuclei. 84\, 315 (2021).\n2. N.V. Novik ov\, N.G. Chechenin\, and А.А. Shirokova J. Surface Investigation. № 2 \, 236 (2021).\n3. J. Allison\, K. Amako\, J. Apostolakis et al. NIM A.835 \, 186 (2016).\n4. A. J. Koning\, and D. Rochman. Nucl. Data Sheets. 113\, 2841 (2021).\n\nhttps://events.sinp.msu.ru/event/8/contributions/232/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/232/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDIES OF RADON CONCENTRATION IN RESIDENTIAL AND PUBLIC BUILDINGS LOCATED IN THE TIEN SHAN FOOTHILLS AND THE NEVA LOWLAND AREAS DTSTART;VALUE=DATE-TIME:20220713T080000Z DTEND;VALUE=DATE-TIME:20220713T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-234@events.sinp.msu.ru DESCRIPTION:Speakers: Vyacheslav Dyachkov (al-Farabi Kazakh National Unive rsity)\nThe large territories of the Republic of Kazakhstan and the Russia n Federation are characterized by a different radiation environment due to the mining (coal\, gas\, non-ferrous metals and uranium)\, the geological conditions\, seismic activities and mountainous areas. In this case\, the radiation environment is influenced by radioactive gases (radon\, thoron) \, together with their decay products\, and radioactive aerosols formed in natural chains of uranium and thorium series. Thus\, one of the most impo rtant tasks of radioecological research is the analysis of radon concentra tion in residential and public buildings. Radon enters the building from t he ground\, through foundations and floors\, or directly from building mat erials. As a result\, a rather high radiation background can be registered in the building. Especially if the house has the high concentration of ur anium-thorium series radionuclides\, or if materials with a high uranium c oncentration were used in its construction. Also\, if there is a positive temperature difference inside and outside the building\, a pressure gradie nt arises and an additional mechanism appears that contributes to the entr y of radon. This mechanism is usually much more important than the diffusi on transfer of radon [1].\nTherefore\, it seems to be interesting to study the concentrations of radon and its decay products in residential and adm inistrative buildings\, and especially in newenergy-efficient buildings [2 ]. In present work\, the objects of research were buildings located in the foothill regions of the Tien Shan (Almaty region)\, because tectonic faul ts and the rocks are additional sources of radon. On the other hand\, it w ould be interesting to compare experimental data on radon concentration ob tained in buildings located in mountainous areas with data obtained in bui ldings built in the Prinevskaya lowland area (with the corresponding geolo gical structure) at the zero mark of the height and depth reference system ( region of St. Petersburg).\nIn this work\, data on radon volume activit y were obtained and analyzed in the period from February 2021 to February 2022 in housing and public buildings of Almaty and St. Petersburg. As a re sult\, the radon concentration distributions were obtained at all levels o f administrative and residential buildings. The dependences of radon volum e activity on temperature\, humidity and pressure were analyzed. Also\, in some local places the high radon volume activity was detected. Such radon «jets» can add an additional radiation load to the total exposure dose for the population from natural radiation sources. \nThis research has bee n funded by the Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan (Grant No. AP09258978).\n\n 1. V.I. Zherebc hevsky\, N.A\, Maltsev\, «Measurement of the content of radon and thoron in samples»\, SPb .: VVM Publishing House\, ISBN 978-5-9651-1299-9\, 2020 .\n 2. Yarmoshenko\, I.V.\, Onishchenko\, A.D.\, Malinovsky\, G.P. et al. Radon concentration in conventional and new energy efficient multi-storey apartment houses: results of survey in four Russian cities\, Nature\, Sci. Rep. 10\, 18136 (2020). https://doi.org/10.1038/s41598-020-75274-4\n\nhtt ps://events.sinp.msu.ru/event/8/contributions/234/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/234/ END:VEVENT BEGIN:VEVENT SUMMARY:Precision measurements of 210Bi β-spectrum for neutrino physics t asks. DTSTART;VALUE=DATE-TIME:20220713T070000Z DTEND;VALUE=DATE-TIME:20220713T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-199@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Derbin (Petersburg Nuclear Physics Institu te NRC KI)\nThe isotope 210Bi is an element of 238U natural decay chain. A s decay product of 222Rn gas and subsequent long-lived 210Pb\, the 210Bi i sotope is present inside and on the surface of all structural materials. A t present\, accurate measurement of 210Bi β-spectrum is necessary for bac kground simulation of modern neutrino and dark matter detectors\, as well as for other low-background experiments. In particular\, the shape of 210B i β-spectrum is very similar to the spectrum of recoil electrons from the scattering of solar CNO-neutrinos. \n The β-spectrum was measured with t wo types of Si-spectrometers developed and manufactured at the PNPI. To re gister electrons in a spectrometer designed according to the classical "ta rget-detector" scheme\, a Si(Li) detector 15 mm in diameter and 7 mm thick was used [1]. The main difference of the new 4πβ- spectrometer is the r esponse function\, which is close to Gaussian\, which does not require car eful consideration of electron backscattering from the crystal surface [2\ ,3]. As a result of two independent measurements\, the values of the nucle ar form factor parameters are determined with an accuracy better than a pe rcent and are consistent with each other.\n\n1. Alekseev I.E.\, Bakhlanov S.V.\, Derbin A.V.\, Drachnev I.S.\, Kotina I.M.\, Lomskaya I.S.\, Muratov a V.N.\, Niyazova N.V.\, Semenov D.A.\, Trushin M.V.\, Unzhakov E.V.\, Phy s. Rev. C 102\, 064329 (2020).\n2 Alekseev I.E.\, Bakhlanov S.V.\, Derbin A.V.\, Drachnev I.S.\, Kotina I.M.\, Lomskaya I.S.\, Muratova V.N.\, Niyaz ova N.V.\, Semenov D.A.\, Trushin M.V.\, Unzhakov E.V. J. Phys.: Conf. Ser . 2103\, 012144 (2021).\n3. Bakhlanov S.V.\, Derbin A.V.\, Drachnev I.S.\, Kotina I.M.\, Lomskaya I.S.\, Muratova V.N.\, Niyazova N.V.\, Semenov D.A .\, Trushin M.V.\, Unzhakov E.V.\, Chmell E.A. Instrum. Exp. Tech.\, 64\, 190 (2021).\n\nhttps://events.sinp.msu.ru/event/8/contributions/199/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/199/ END:VEVENT BEGIN:VEVENT SUMMARY:The Fayans energy-density functional. New constraints fro m the equations of state. DTSTART;VALUE=DATE-TIME:20220715T101000Z DTEND;VALUE=DATE-TIME:20220715T103000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-587@events.sinp.msu.ru DESCRIPTION:Speakers: Ivan Borzov (NIC Kurchatov Institute)\nThe Fayans en ergy-density functional. \n New constraints from the equat ions of state. \n I.N. Borzov 1\,2\, S.V. Tolokonnik ov1\,3 \n1 National Research Centre “Kurchatov Institute”\, Moscow\, R ussia\n2Bogolubov Laboratory of Theoretical Physics\, Joint Institute of N uclear Research\, Dubna\, Russia\n3 Moscow Institute of Physics and Techno logy (National Research University)\, Dolgoprudny\, Russia\n†E-mail: Bor zov_IN@nrcki.ru\, cc: ibor48@mail.ru\n\nThe equations of state for infinit e\, symmetric nuclear matter and pure neutron matter are analyzed in terms of the Fayans energy density functional parameters: a+\,-1\,2\, h+\,-1\,2 . Fitting procedure of the DF3-a functional [1] is redone involving the pr eviously unused parameter h-2. Additional constraint is implemented from t he upper bound of the giant dipole resonance energy in 208Pb. A quality of the previous global fit of the Fayans EDF has been kept for the nuclear d ensities\, masses of nuclei\, single-particle levels and charge radii. Rec ently the constraints on symmetry energy and its derivative has been obtai ned in [6] using the data on nuclear masses\, results of ab initio calcula tions with N3LO\, ΔRnp values from PREXP-II\, CREX experiments\, as well as the latest data from the radii of neutron stars and registration of gra vitational waves. The symmetry energy slope at saturation L(ρ0) calculate d for different h-2 with the relativistic corrections taken into account ( Fig.1) is compared with the error margines derived from the set of restric tions [6]. As it can be seen\, for DF3-a\, the EOS is softer than the ones obtained from the FANDF0 functional [2]\, as well as from APR [3]\, AFDMC [4]\, N2LO(D2\,E1) and N2LO(D2\,Eτ) [5] (Fig.2).\nSupported by the grant of Russian Scientific Foundation (RSF 21-12-00061). \nFig.1. The L(ρ) fo r symmetric nuclear matter. Calculation with the DF3-a functional for var ious value of parameter h−2 . \nFig. 2. Energy per nucleon for a symmet rical nuclear mater (SNM) as a function of density. our calculation with t he FaNDF0[1]\, DF3-a[2] as well as for APR [3]\, AFDMC [4]\, N2LO[5] funct ionals.\n\n1. S.V. Tolokonnikov\, E.E. Saperstein\, Phys. At. Nucl. 74\, 1 277 (2011).\n2. S.A. Fayans\, JETP Lett. 68\, 169 (1998). \n3. A. Akmal\, V. R. Pandharipande\, and D. G. Ravenhall\, Phys. Rev. C 58\, 1804 (1998). \n4. S. Gandolfi\, A. Yu. Illarionov\, K. E. Schmidt\, F. Pederiva\, and S . Fantoni\, Phys. Rev. C 79\, 054005 (2009).\n5. D. Lonardoni\, I. Tews\, S. Gandol_\, and J. Carlson\, arXiv:1912.09411 [nucl-th] (2019).\n6. J. La ttimer in "Nuclear Matter Symmetry Energy From Experiment\, Theory and Obs ervation"\,S@INT seminar\, Seattle\,2021.\n\nhttps://events.sinp.msu.ru/ev ent/8/contributions/587/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/587/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of the deuteron analyzing powers Ay\, Ayy and Axx in d p- elastic scattering at Nuclotron DTSTART;VALUE=DATE-TIME:20220714T142900Z DTEND;VALUE=DATE-TIME:20220714T144900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-237@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Ladygin (VBLHEP JINR)\nThe results on the the vector Ay and tensor Ayy and Axx analyzing powers in deuteron-proton elastic scattering at large scattering angles are presented. \nThese data were obtained at internal target at JINR Nuclotron \nin the energy range 400-1800 MeV using polarized deuteron beam \nfrom new polarized ion sourc e.\nNew data on the deuteron analyzing powers in the wide energy range demonstrate the sensitivity to the short-range spin structure of the isos calar nucleon-nucleon correlations.\n\nhttps://events.sinp.msu.ru/event/8/ contributions/237/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/237/ END:VEVENT BEGIN:VEVENT SUMMARY:ADVANCED HADRON THERAPY TECHNOLOGIES BASED ON THE BINARY NUCLEARP HYSICS METHODS DTSTART;VALUE=DATE-TIME:20220712T074000Z DTEND;VALUE=DATE-TIME:20220712T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-377@events.sinp.msu.ru DESCRIPTION:Speakers: I. N. Zavestovskaya ()\nThe program of development a nd implementation of new diagnostic and therapy technologies based on the Proton Therapy Complex (PTC) "Prometheus" is presented. The tasks will be implemented with the close integration of the LPI\, MEPhI\, Center of Radi ology of RF\, as well as their Russian and foreign partners.\nModernizatio n of Russian-made proton synchrotron complexes of the Prometheus system is envisaged in order to develop and implement new technologies based on the m and improve existing technologies for proton and ion therapy and diagnos tics. Prometheus is a unique PTC. It is a compact (outer diameter - 5 m\, weight – 15 tons) synchrotron for protons with low energy consumption (u p to 100 kW)\, which allows one to place such PTCs directly in medical cen ters.\nIt is supposed to develop proton radiography and tomography technol ogies using the maximum proton energy. Technologies of combined action of various types of radiation (protons-neutrons\, protons-carbon ions\, multi -ion therapy)\; targeted proton therapy technologies using promising nanop articles and systems based on them as therapy sensitizers and active agent s for diagnostics.\nThe latter direction involves a significant expansion of the field of modern nuclear medicine through integration with nanomedic ine\, which uses nanoparticles for the diagnosis and therapy of cancer\, u sing their unique properties. The introduction of non-radioactive material s that can be activated from the outside using various external sources of nuclear particles to produce radioactivity in situ is one of the new dire ctions of activation of nano-drugs at the site of a cancerous tumor\, whic h can be considered as in situ production of radiopharmaceuticals [1].\nMo dernization of Prometheus PTC based on the developed nuclear physics tech nologies\, their production for Russian nuclear medicine centers opens the way for solving the issue of development and introduction of new effectiv e technologies for proton and ion diagnostics and therapy.\n\n 1. Roy I.\, Krishnan S.\, Kabashin A.\, Zavestovskaya I.\, Prasad P. Transforming Nuc lear medicine with nanoradiopharmaceuticals. Review. ACS Nano. (2021).\n\n https://events.sinp.msu.ru/event/8/contributions/377/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/377/ END:VEVENT BEGIN:VEVENT SUMMARY:The effect of charged particle multiplicity fluctuations on centra lity determination procedure using Bayesian approach at NICA energy range DTSTART;VALUE=DATE-TIME:20220715T101000Z DTEND;VALUE=DATE-TIME:20220715T103000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-250@events.sinp.msu.ru DESCRIPTION:Speakers: Dim Idrisov (MEPHi)\nCentrality determination in hea vy ion collisions is an important task\, because it allows us to compare t he results from different experiments and models. To determine centrality\ , different methods are used. In this paper\, a method based on inverse Ba yes' theorem is considered. A new description of the fluctuations of charg ed particle multiplicity and their transverse energy is also proposed for a more accurate impact parameter reconstruction.\n\nhttps://events.sinp.ms u.ru/event/8/contributions/250/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/250/ END:VEVENT BEGIN:VEVENT SUMMARY:A LINEAR ELECTRON ACCELERATOR – TOP-UP INJECTOR FOR THE 4TH GENE RATION SPECIALIZED SYNCHROTRON RADIATION SOURCE USSR DTSTART;VALUE=DATE-TIME:20220713T070000Z DTEND;VALUE=DATE-TIME:20220713T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-236@events.sinp.msu.ru DESCRIPTION:Speakers: Ilia Ashanin (NRNU MEPHI)\nemphasized textThe 4th ge neration synchrotron light source called Ultimate Source of Synchrotron Ra diation (USSR-4) is under development at the moment in Russia [1]. Paramet ers of X-ray radiation of advanced modern Synchrotron Radiation Sources – brightness\, coherence and temporal resolution – make it possible to provide experiments to study the structure of the widest range of objects in a variety of disciplines at a qualitatively new level compared to prev ious generation’s sources. New 4th generation source design will be the one of the largest world scientific centers and will require the innovatio ns and evolution in the domestic technologies of magnetic and vacuum syste ms\, the solution of new problems in materials science and instrument engi neering. \nGeneral facility layout includes 6 GeV main storage ring and a linac for top-up injection. Thus\, it is proposed to use the same linac wi th two RF-guns. First of them will RF photogun and can be used to generate the drive beam for FEL. The second one will RF-gun with thermionic cathod e can be used for injection into storage ring. Both injectors will operate with the same regular part of the linac which consists of 110 identical r egular sections (see Fig. 1). The planning to have the transverse emittanc e of 70 pm·rad for the storage ring and less than 1 nm∙rad for a FEL. \ n\n \nFig. 1. Layout scheme of the 6 GeV top-up injection linac.\n\nDevelo pment of a general layout of the top-up linac with the aim to minimize of the beam energy spread and transverse emittance at the exit\, optimization of geometrical and electrodynamical parameters of accelerating structures and analysis of the front-to-end beam dynamics in this linear accelerator will discuss in the report. All results of the beam dynamics simulation c arried out using the BEAMDULAC package developed at the Department of Elec trophysical Facilities of NRNU MEPhI [2].\n\n1. V.S. Duybkov et al\, Proc. of RuPAC’2021\, TUPSB26 (2018)\, pp. 280-282.\n2. E. Masunov\, S. Poloz ov\, Nucl. Instrum. Meth. A 558\, (2006)\n\nhttps://events.sinp.msu.ru/eve nt/8/contributions/236/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/236/ END:VEVENT BEGIN:VEVENT SUMMARY:Analysis of cell response to ultrahigh dose-rate proton irradiatio n DTSTART;VALUE=DATE-TIME:20220712T080000Z DTEND;VALUE=DATE-TIME:20220712T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-348@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Akulinichev (INR RAS\, Hospital of RAS)\nAs i s known\, the flash effect in radiotherapy with a dose rate of more than 4 0 Gy/s makes it possible to destroy tumor cells much stronger than normal cells. Additional prospects for flash therapy are associated with irradiat ion with protons\, since protons and ions make it possible to increase the conformality of irradiation compared to irradiation with light particles. A unique feature of the proton beam facility at the Institute of Nuclear Research [1]\, is that it makes it possible to deliver the total irradiati on dose in one pulse with a duration of less than 100 μs. Such a single-p ulse flash mode (splash) of radiotherapy may open up additional prospects. \n We have carried out a series of several runs of the INR proton accele rator in a wide range of modes: from the conventional mode with an average dose rate Ḋ < 3 Gy/s to the splash mode with Ḋ > 104 Gy/s. Two types of tumor cells were irradiated in these experiments: human colon adenocarc inoma (HT-29) and human colon cancer (HCT116). Human adipose tissue mesenc hymal stem cells (ADSC) – fibroblasts – were taken as normal cells. Ce ll cultures were irradiated in the region of the Bragg peak (SOBP) and on the plateau up to the Bragg peak. The task is to carry out a comprehensive analysis of the cell response to various modes of proton irradiation\, bo th using flow cytometry and using another method - real-time PCR. Quantita tive PCR was used to analyze the genetic control of apoptosis initiation ( BAX\, PUMA genes)\, cell cycle control (CDKN1A gene)\, and genome integrit y control (p53 gene).\n According to preliminary results\, the levels of expression of genes involved in apoptosis and genome integrity control under flash/splash irradiation differ from those under conventional irradi ation both in the studied tumor lines and in normal fibroblasts.\n The w ork is supported by the Russian Science Foundation grant No. 22-25-00211 “Investigation of cell response to the impact of record powerful ultrash ort proton pulses.”\n\n1. Akulinichev S.V.\, et al. Possibilities of Pro ton FLASH Therapy on the Accelerator at the Russian Academy of Sciences’ Institute for Nuclear Research. Bull. Russ. Acad. sci. Phys. 84\, 1325– 1329 (2020).\n\nhttps://events.sinp.msu.ru/event/8/contributions/348/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/348/ END:VEVENT BEGIN:VEVENT SUMMARY:SEARCH FOR NUCLEON-NUCLEON CORRELATIONS IN NUCLEUS-NUCLEUS COLLISION AT THE MPD/NICA DTSTART;VALUE=DATE-TIME:20220715T082000Z DTEND;VALUE=DATE-TIME:20220715T084000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-256@events.sinp.msu.ru DESCRIPTION:Speakers: Bogdan Lavrov (National Research Nuclear University\ , MEPhI\, Moscow\, Russia.)\nB. O. Lavrov1\,2\, A. B. Kurepin1\n 1Institute for Nuclear Research\, Russian Academy of Sciences\, Moscow\ , Russia\;\n 2National Research Nuclear University\, MEPhI\, Mos cow\, Russia.\n E-mail: lavrov.bogdan@list.ru \nA proposal for an experiment to measure the cross section of pion\, kaon\, proton and antiproton production in a nucleus-nu cleus collision in a kinematically forbidden region for nucleon-nucleon in teraction on the MPD/NICA is considered. It is shown that this process ca n be separated from the kinematically allowed production process using the existing detectors of the MPD facility at an energy of 9.2 GeV. The da ta could be used to search for scaling dependence\, which was observed ear lier at lower energies [1]. Obtaining new results is of great importance f or estimating the magnitude of the probability of the subthreshold heavy p articles production process [2].\n\n1. A. Kurepin et al.\, Acta Physica Po lonica B\, 27\, 3077 (1996).\n2. A. Kurepin\, Journal of Modern Physics 12 \, 433 (2021).\n\nhttps://events.sinp.msu.ru/event/8/contributions/256/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/256/ END:VEVENT BEGIN:VEVENT SUMMARY:USING THE TAGGED NEUTRON METHOD FOR DETERMINING THE CONCENTRATION OF CARBON IN SOIL DTSTART;VALUE=DATE-TIME:20220713T124000Z DTEND;VALUE=DATE-TIME:20220713T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-520@events.sinp.msu.ru DESCRIPTION:Speakers: Yuri Kopatch (JINR)\nMonitoring the content of soil organic carbon (SOC) is one of the most important tasks in the field of gl obal climate change\, in the development and implementation of measures ai med at reducing greenhouse gas emissions [1].\nExisting methods of soil an alysis [2] mainly involve the selection of bulk samples and work in the la boratory\, which leads to a significant complication of obtaining analytic al results\, to additional use of human and time resources\, and in some c ases to the unreliability and insufficient accuracy of the data obtained.\ nThe tagged neutron method (TNM) [3\, 4] can be used for fast nondestructi ve elemental analysis of various substances and materials\, in particular\ , without sampling. The method uses neutrons with an energy of 14.1 MeV\, which have a high penetrating power. An important advantage of the method is the possibility of using portable tagged neutron generators\, which mak es it possible to carry out field measurements.\nWe present some results o f test measurements and model simulations\, which will help to assess the accuracy limits of the method in terms of reproducibility and repeatabilit y of determining the carbon content in mock soil samples using TNM.\n\n 1. Lal\, R.: Soil carbon management and climate change\, Carbon Manage.\, 4 (2013) 439–462\, https://doi.org/10.4155/cmt.13.31.\n 2. England J .R. and Viscarra Rossel R.A.\, SOIL\, 4 (2018) 101–122\, https://doi.org /10.5194/soil-4-101-2018.\n 3. Valkovic V.\, 14 MeV Neutrons: Physics a nd Applications. CRC Press: Taylor & Francis Group\; 2016\, 481p.\n 4. Galina Yakubova\, Aleksandr Kavetskiy\, Stephen A. Prior\, H. Allen Torber t\, Tagged neutron method for carbon analysis of large soil samples\, Appl ied Radiation and Isotopes\, Volume 150 (2019)12134\, ISSN 0969-8043 \, https://doi.org/10.1016/j.apradiso.2019.05.028.\n\nhttps://events.sinp. msu.ru/event/8/contributions/520/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/520/ END:VEVENT BEGIN:VEVENT SUMMARY:SEARCH FOR ALPHA-CONDENSATE EFFECTS IN DISSOSIASION OF RELATIVISTI C NUCLEI DTSTART;VALUE=DATE-TIME:20220715T082000Z DTEND;VALUE=DATE-TIME:20220715T084000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-242@events.sinp.msu.ru DESCRIPTION:Speakers: Andrei Zaitsev ()\nThe BECQUEREL experiment is aimed at solving topical problems in nuclear cluster physics [1]. Due to its un ique sensitivity and spatial resolution the used method of nuclear track e mulsion (NTE) makes it possible\, to study in a unified approach multiple final states arising in the dissociation of relativistic nuclei. The focus is a concept of α-particle Bose-Einstein condensate ($\\alpha$BEC) - the extremely cold state of several S-wave $\\alpha$-particles near the coupl ing threshold. The unstable $^8$Be nucleus is described as 2$\\alpha$BEC\, and the $^{12}$C(0$^+_2$) excitation or Hoyle state (HS) as 3$\\alpha$BE C. The state $^{16}$O(0$^+_6$) above the 4$\\alpha$ threshold\, considered as 4$\\alpha$BEC\, can sequentially decay $^{16}$O(0$^+_6$) → $\\alpha$ $^{12}$C(0$^+_2$) or $^{16}$O(0$^+_6$) → 2$^8$Be(0$^+$). \nIn NTE layer s longitudinally exposed to relativistic nuclei the invariant mass of ense mbles of He and H fragments can be determined from the emission angles in the approximation of conservation of initial momentum per nucleon. $^8$Be and HS decays\, as well as $^9$B → $^8$Be$p$ decays\, are identified in fragmentation of light nuclei by an upper constraint on the invariant mass [2]. Photos and videos of characteristic interactions are available on th e site http://becquerel.jinr.ru/. This approach has been used to identify $^8$Be and HS and search for more complex states of $\\alpha$BEC in fragme ntation of medium and heavy nuclei. Recently\, based on the statistics of dozens of $^8$Be decays\, an enhancement in the probability of detecting $ ^8$Be in an event with an increase in the number of relativistic $\\alpha$ -particles in it was found [3]. A preliminary conclusion is drawn that the contributions from $^9$B and HS decays also increase. The exotically larg e sizes and lifetimes of $^8$Be and HS suggest the possibility of synthesi zing $\\alpha$BEC by successively connecting the emerging $\\alpha$-partic les 2$\\alpha$ → $^8$Be\, $^8$Be$\\alpha$ → $^{12}$C(0$^+_2$)\, $^{12} $C(0$^+_2$)$\\alpha$ → $^{16}$O(0$^+_6$)\, 2$^8$Be → $^{16}$O(0$^+_6$ ) and further with a decreasing probability at each step\, when $\\gamma$- quanta or recoil particles are emitted. Nowadays\, the main task is to cla rify the relation between the appearance of $^8$Be and HS and the multipli city of $\\alpha$-ensembles and to search on this basis for decays of the $^{16}$O(0$^+_6$) state. In this regard\, the BECQUEREL experiment aims to measure multiple channels of $^{84}$Kr fragmentation at energies up to 95 0 MeV per nucleon. There are a sufficient number of NTE layers\, the trans verse scanning of which on a motorized microscope makes it possible to ach ieve the required statistics. A status of the ongoing research is presente d.\n\n1. P.I. Zarubin\, Lect. Notes in Phys. 875\, Clusters in Nuclei\, Vo lume 3. Springer Int. Publ.\, 51 (2013)\; DOI: 10.1007/978-3-319-01077-9_3 \, arXiv: 1309.4881.\n2. D.A. Artemenkov et al.\, Eur. Phys. J. A 56 (202 0) 250\; DOI: 10.1140/epja/s10050-020-00252-3\, arXiv: 2004.10277.\n3. A. A. Zaitsev et al.\, Phys. Lett. B 820 (2021) 136460\; DOI 10.1016/j.physle tb.2021.136460\, arXiv: 2102.09541.\n\nhttps://events.sinp.msu.ru/event/8/ contributions/242/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/242/ END:VEVENT BEGIN:VEVENT SUMMARY:OPTICAL MODEL ANALYSIS OF PROTON ELASTIC SCATTERING ON 6Li NUCLEI WITH RESONANCE CONTRIBUTION DTSTART;VALUE=DATE-TIME:20220712T141000Z DTEND;VALUE=DATE-TIME:20220712T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-588@events.sinp.msu.ru DESCRIPTION:Speakers: S. M. Selyankina (Russian Federal Nuclear Center – All-Russian Research Institute of Experimental Physics)\, S. M. Selyankin a (Russian Federal Nuclear Center – All-Russian Research Institute of Ex perimental Physics)\nOptical model analysis [1] of proton elastic scatteri ng on 6Li nuclei at proton energy from 50 keV to 185 MeV was continued wit h the use of the optical-model program code OptModel [2] taking into accou nt the resonance contribution. Polarization data [3] in 1.21 to 3.22 MeV p roton energy Ep range were added into set of the early used elastic scatte ring experimental data.\n1. L.N. Generalov\, V.A. Zherebtsov\, S.M. Selyan kina\, Bull. Russ. Acad. Sci. Phys. 85. 1136 (2021).\n2. L.N. Generalov\, V.A. Zherebtsov\, S.M. Taova\, Bull. Russ. Acad. Sci. Phys. 80. 295 (2016) .\n3. C. Petitjean\, L. Brown\, R.C. Seyler\, Nucl. Phys. A. 129. 209 (196 9).\n\nhttps://events.sinp.msu.ru/event/8/contributions/588/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/588/ END:VEVENT BEGIN:VEVENT SUMMARY:NICA Megascience Project at JINR: Status and Plans DTSTART;VALUE=DATE-TIME:20220711T090000Z DTEND;VALUE=DATE-TIME:20220711T093500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-629@events.sinp.msu.ru DESCRIPTION:Speakers: Igor Meshkov (JINR Dubna Russia)\nThe Nuclotron-base d Ion Collider fAcility (NICA) is the flagship project at the Joint Instit ute Nuclear Research (Dubna\, Russia). Two goals of the project — experi mental studies of dense nuclear (baryonic) matter and particle spin physic s — are combined in the project on the basis of a common experimental me thod: the investigation of collisions of nuclei at relativistic energies. The project is under active stage-by-stage realization. The report describ es in detail the NICA scheme\, the technical solutions being used and stat us of the project development. \nAn achievement of design luminosity requi res overcoming many technological and beam physics problems\, which are de scribed in this report.\n\nhttps://events.sinp.msu.ru/event/8/contribution s/629/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/629/ END:VEVENT BEGIN:VEVENT SUMMARY:DEVELOPMENT OF THE SPECIALTY "MEDICAL PHYSICS" IN THE REPUBLIC OF BELARUS DTSTART;VALUE=DATE-TIME:20220712T082000Z DTEND;VALUE=DATE-TIME:20220712T084000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-386@events.sinp.msu.ru DESCRIPTION:Speakers: I.G. Tarutin ()\nThe main principles and requirement s for the introduction of medical physics into medicine in the CIS countri es were developed by the organizer of the Association of Medical Physicist s of Russia and its first president\, Professor Valery Aleksandrovich Kost ylev\, back in the last century. Now there are medical physicists in the R epublic of Belarus.\nBy the Decree of the Ministry of Labor and Social Pro tection of the Republic of Belarus dated May 31\, 2013 No. 49 “On Amendm ents and Additions to the Decree of the Ministry of Labor of the Republic of Belarus dated December 30\, 1999 No. 159”\, the position of “Medica l Physicist” was introduced in the republic.\n The Republican Institute of Higher Education\, by changing No. 9 of the National Classifier of the Republic of Belarus 011-2009 “Specialties and Qualifications”\, approv ed a new specialty of higher education of the first stage “Medical Physi cs”.\n By the Decree of the Ministry of Health of the Republic of Belaru s No. 55 dated April 12\, 2016 “On approximate staffing standards for th e oncological service”\, the position of “Medical Physicist” was int roduced in the republic.\nThe training of medical physicists in the Republ ic of Belarus is carried out at the International Sakharov Environmental I nstitute of Belarusian State University (ISEU BSU\, since 2013. In 2017\, a master's program in medical physics was organized at the ISEU named afte r A.D. Sakharov BSU. Master students underwent an in-depth study of all se ctions of medical radiology. Graduates of the institute work in most oncol ogical institutions of the country\, as well as in other institutions of t he republic related to dosimetry\, radiation safety\, processing of inform ation obtained in the diagnosis and treatment of patients\, sanitary super vision\, metrology\, etc. In 2022\, more than 80 medical physicists work i n Belarus\, and their number will increase every year for 10-15 people In addition to practical work in clinics\, medical physicists actively partic ipate in scientific research\, including projects supported by the IAEA.\n In 2018\, a postgraduate course for medical physicists was opened at ISEU BSU. Unfortunately\, the specialty “Medical physics” is not yet availa ble in the Higher Attestation Commission of Belarus\, and graduate student s are preparing to defend dissertations in other specialties of technical sciences.\n\nhttps://events.sinp.msu.ru/event/8/contributions/386/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/386/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF THE MECHANISMS OF HADRON-NUCLEAR INTERACTIONS ON THE POS ITIVE BEAM LINE 18 OF U-70 ACCELERATOR (Experiment proposal) DTSTART;VALUE=DATE-TIME:20220715T091000Z DTEND;VALUE=DATE-TIME:20220715T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-264@events.sinp.msu.ru DESCRIPTION:Speakers: Serguei Sadovsky (NRC "Kurchatov institute" - IHEP)\ nThe aim of the project is to study the mechanisms of hadron-nuclear inter actions at the Hyperon experimental setup located on beam line 18 of the U -70 accelerator complex\, Protvino. It is proposed to upgrade the setup so that to be able to study additionally the excited states of secondary nuc lei by means of precision nuclear gamma-ray spectroscopy in dependence on the specific type of interaction of hadrons with target nuclei. Of particu lar interest is the newly discovered d*(2370) dibarionic state formed both in vacuum and in the composition of light nuclei\, where it can presumabl y replace deuteron clusters. Precision gamma-ray spectroscopy makes it pos sible to differentiate these cases. Further detailed study of these phenom ena is necessary. It opens up a new direction in nuclear physics at the ju nction with the particle physics of intermediate energies. \nThe project w ill be carried out on the basis of the existing Hyperon-M experimental set up of NRC “Kurchatov Institute” - IHEP. The main detector of the setup is the cherenkov lead glass photon spectrometer LGD2 used for detection o f energetic photons in the forward hemisphere of reaction π+A ➞ M0➞k γ A’. To fulfill the tasks of the new project\, it is proposed to upgra de the setup with the Charged Particle Veto (CPV) and Gamma Nuclear Transi tion (GNT) detectors. The CPV detector is a system of segmented scintillat ion counters dedicated for detection of the secondary charged particles in a solid angle close to 4π. For detection of the scintillation light the SiPM type photodetector will be used. The GNT detector is dedicated for pr ecision measurement of photon energies in nuclear gamma-transitions of sec ondary nuclei formed as a result of the interaction of beam particles with target nuclei. The energy spectrum of these photons lies in the range fro m 0.25 to 80 MeV.\nAfter the gradual modernization of the setup to the Hyp eron+ level\, it is planned to expose the setup on the positive beam line with the momentum of 7 GeV/c for several nuclear targets (Li\, Be\, B\, C\ , O) and obtain experimental data for a detailed analysis of 2π0 systems formed\, among other things\, as a result of the decay of d*(2370) ->d+2π 0 both in vacuum and inside the target nucleus.\n\nhttps://events.sinp.msu .ru/event/8/contributions/264/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/264/ END:VEVENT BEGIN:VEVENT SUMMARY:SIMULATION THE EFFECT OF 11B ISOTOPE ON THE PROTON AND ALPHA PARTI CLE DOSE DISTRIBUTIONS USING MONTE CARLO METHOD DTSTART;VALUE=DATE-TIME:20220712T130000Z DTEND;VALUE=DATE-TIME:20220712T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-243@events.sinp.msu.ru DESCRIPTION:Speakers: Azizbek Abduvaliev (Institute of Nuclear Physics UzA s)\nThe advantages of proton therapy make it useful for treating tumors lo cated in the regions that surround radiosensitive tissues and\, in the tis sues\, where surgical access is limited [1]. Recent studies [2-3] have ind icated that Proton-Boron Capture Therapy (PBCT) induces tumor cell death t hrough three alpha particles via the reaction between proton and 11B. When a proton reacts with boron (11B) based on the following equation\, the 11 B changes to 12C in an excited state. Then\, the excited carbon nucleus sp lits into an alpha particle with the energy of 3.76 MeV and 8Be. Finally\, 8Be splits into two alpha particles each with the energy of 2.74 MeV.\n11 B + p → 12C → 8Be + α →3α + 8.7 MeV (1)\n The therapy results ca n be more effective than proton therapy if the energy deposition due to th e alpha particles and the proton’s Bragg-peak in the tumor regions could be matched. Of course\, further studies are needed to evaluate the use of PBCT in clinical practices. It is also important to investigate secondary particles in radiotherapy. Secondary particles such as neutrons and photo ns can be produced by the Coulomb interaction of protons with atomic elect rons\, elastic nuclear scattering\, and the passing of protons through tis sues. The main aim of this study was to determine the dose of protons and alpha particles for boron different concentrations\, investigate the role of secondary particles in the PBCT treatment method as compared to the con ventional proton beam therapy using Monte-Carlo simulation package FLUKA. To do so\, first\, the variation of the Bragg-peak dose and the depth of p rotons were examined depending on the boron concentration and the proton e nergy. The doses of these particles were calculated for boron concentratio ns in the range of 1\; 1\,5\; …\; and 5% and different proton energies i ncluding\, 60\; 90\; 120\; and 150 MeV.\n\nhttps://events.sinp.msu.ru/even t/8/contributions/243/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/243/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of the 16O(alpha\, alpha)16O(3–) and 15N(alpha\, t)16O(3 –) reactions mechanism at E_alpha = 30.3 MeV DTSTART;VALUE=DATE-TIME:20220712T120000Z DTEND;VALUE=DATE-TIME:20220712T123000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-589@events.sinp.msu.ru DESCRIPTION:Speakers: Natali Zelenskaya (Lomonosov Moscow State University \, Scobeltsyn Institute of Nuclear Physics)\nThe study of the differential cross sections angular dependence of the reactions 16O(alpha\, alpha) [ 1 ] and 15N(alpha\, t)16O(3–) [2] at E_alpha = 30.3 MeV was carried out. Both magnitude and shape of the measured cross sections and large value of E3 transition between the ground and 3– level of 16O nucleus justify th e use of CCBA formalism\, when both couple channels method (CC) and DWBA a re combined (FRESCO [3]) as well as the compound nucleus (CN) mechanism (T ALYS [4]) in the theoretical analysis. The strength of coupling factors we re introduced from the experimental reduced transition probability B(E3). The exchange of 12С cluster with summation over all states allowed by the selection rules for transfer mechanism at both reactions and proton strip ping for the (alpha\, t)-reaction were taking into account. The spectrosco pic amplitudes are obtained in the shell model. The calculated angular dis tributions\, together with the experimental ones\, are shown in figs. It c an be seen that in (alpha\, alpha')-scattering\, the cross section is dete rmined by collective excitation in the front hemisphere and by 12С exchan ge at large angles. The СN contribution is not noticeable. In the reactio n (alpha\, t)\, the main contribution is made by the CN mechanism\, else t he contribution of the proton stripping is noticeable at forward hemispher e. The 12C exchange mechanism is important at theta_t > 90\\circ. The perf ormed analysis showed that the calculated cross sections of both reactions agree with the experimental one without introducing normalization factors only when all considered mechanisms are taken into account.\n\n![Cross se ctions of (alpha\, apha') (a) and (alpha\, t) (b) reactions: thin solid li ne – CC (stripping)\, dotted – exchange of 12С \, dot-dash – CN\, f at solid – sum\, black dots – experiment][1]\n\n1. A.V. Ignatenko\, V. M. Lebedev\, N. V. Orlova et al.\, Phys. Atom. Nucl. 59\, 565 (1996).\n2. A.V. Ignatenko\, V. M. Lebedev\, N. V. Orlova et al.\, Phys. Atom. Nucl. 61\, 1 (1998).\n3. J. Thompson\, Comp. Phys. Rep. 7\, 167 (1988)\; http:// www.fresco.org.uk.\n4. J. Koning\, S. Hilaire\, and M. C. Duijvestijn\, T ALYS: AIP Conf. Proc. 769\, 1154 (2005).\n \n\n\n \n\n\n [1]: https://dis k.yandex.ru/i/ZGo5QxpSOvjtmw\n\nhttps://events.sinp.msu.ru/event/8/contrib utions/589/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/589/ END:VEVENT BEGIN:VEVENT SUMMARY:The Regge meson spectrum from holographic Wilson confinement crite rion DTSTART;VALUE=DATE-TIME:20220713T074000Z DTEND;VALUE=DATE-TIME:20220713T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-630@events.sinp.msu.ru DESCRIPTION:Speakers: Timofey Solomko (Saint-Petersburg State University)\ nUsing the Wilson confinement criterion\, a holographic model for finding a string-like spectrum of meson excitations is proposed. The model is appl ied to the vector and scalar mesons and a good agreement is obtained both with the existing experimental data and with some other known phenomenolog ical approaches. The constructed model provides a novel realization of spo ntaneous chiral symmetry breaking between parity partners.\n\nhttps://even ts.sinp.msu.ru/event/8/contributions/630/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/630/ END:VEVENT BEGIN:VEVENT SUMMARY:New approaches to the modernization of technologies for radiation sterilization of bioimplants DTSTART;VALUE=DATE-TIME:20220712T101000Z DTEND;VALUE=DATE-TIME:20220712T103000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-261@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Rozanov (Lomonosov Moscow State University) \nModern requirements for the quality of bioimplants combine the need to e nsure not only the necessary osteoinductive potential\, adequate structure and mechanical strength\, but also guarantees the safety of the recipient due to the high level of sterility of the plastic material.\nAmong the cu rrently used technologies for the sterilization of biomaterials\, radiatio n exposures occupy an increasing volume [1]. However\, the presence of pro nounced dose-dependent side effects that can lead to deterioration of all of the above vital properties and characteristics of bone implants determi nes the need for further improvement of radiation technologies.\nOne of th e promising solutions is the development of combined technologies that com bine\, along with radiation treatment\, other types of physico-chemical ef fects with a pronounced resultant synergism of sterilization action. As th e author's research has shown\, one of such promising combinations is two- stage treatment (ozone + radiation) [2]. Further development and improveme nt of the new technology is carried out in several directions. Firstly\, t he optimization of the impact parameters at each of the stages. Secondly\, the choice of optimal sources (ozone\, radiation) effects to ensure the q uality of manufactured bone implants\, including the characteristics of th e surface layer of bone samples [3\,4] (relief\, microarchitectonics\, mec hanical characteristics\, elemental composition\, etc.).\nThis research ha s been supported by the Interdisciplinary Scientific and Educational Schoo l of Moscow University «Photonic and Quantum technologies. Digital medici ne».\n\n1. V.V.Rozanov\, I.V.Matveichuk . Clinical Medicine Almanac\, 47\ , 7. (2019).\n2. I.V.Matveichuk\, V.V.Rozanov\, I.K.Gordonova et al. Paten t of Russian Federation № 26\n 30464\, (29.07.2016).\n3. V.V.Krasnov\, I .V.Matveichuk\, V.V.Rozanov et al. // Genes and Cells\, V. XIV\, Suppl. P. 125.(2019).\n4. Chernyaev A.P.\, Rozanov V.V.\, Beklemishev M.K.\, et al. // Bull. Russ. Acad. Sci. Phys.. 84.11. (2020).\n\nhttps://events.sinp.ms u.ru/event/8/contributions/261/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/261/ END:VEVENT BEGIN:VEVENT SUMMARY:Neutron response function of CeBr3-NaI(Tl) phoswich spectrometer for 1.0 ÷ 5.5 MeV neutron energy range DTSTART;VALUE=DATE-TIME:20220713T153000Z DTEND;VALUE=DATE-TIME:20220713T155000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-248@events.sinp.msu.ru DESCRIPTION:Speakers: Zhassulan Zeinulla (JINR\, Dubna\, Russia)\nThe γ-s pectrometer [1] which was assembled from 9 CeBr3-NaI(Tl) phoswich detector s [2] is a unit of the MULTI facility at the FLNR\, JINR (Dubna) for study ing the γ-emission in exotic decay of neutron-rich weakly bound nuclei li ke β-decay through giant dipole and pygmy resonances. It was reported [1] a high time and energy resolution\, high peak and suppression efficiency of this spectrometer operated in the Compton suppression mode. This repor t is devoted to neutron detection efficiency and influence of neutron back ground on γ-spectra\, particularly spectra obtained in the Compton suppre ssion mode.\nThe energy dependence of neutron detection efficiency at En = 1.0 5.5 MeV energy range has been investigated. The measurements were c arried out by the method of tagged neutrons and 239Pu/9Be source. The α-d ecay of 239Pu is not accompanied by γ emission. Only γ quanta Eγ = 4.43 MeV from the 9Be(α\, n)12C* reaction can accompanied the neutrons in abo ut 60% of reaction events. These γ quanta can be used as a trigger in the method of tagged neutrons and for En measuring by Time-of-Flight. \nThe m ain characteristics of the γ-ray spectrometer are presented: energy resol utions ΔE\, n-γ detection efficiency δγ(E) and δn(E) depending on the γ and n energy\, respectively. The special attention was focused on the studying of neutron detection efficiency δn(E) of the CeBr3 component of phoswich detectors for Compton suppression mode. The pulse shape analysis of phoswich detector scintillation pulses was carried out by VME unit Mesy tec MDPP-16 QDC pulse processor [3]. The neutron detection efficiency was obtained from tagged neutron spectra normalized to published [4] neutron s pectra from a 239Pu/9Be source. \n\n1. Zh. Zeinulla\, Yu.G. Sobolev\, S.S. Stukalov\, I. Sivacek\, Yu.E. Penionzhkevich\, Gamma-ray spectrometer ass embled from 9 CeBr3-NaI(Tl) phoswich detectors\, Acta Physica Polonica B\, Vol.14\, N4\, pp.. 755-760\, (2021)\;\n2. M. Gierlik et al.\, IEEE Transa ctions on Nuclear Science 53\, 1737 (2006).\n3. A. Ruben et al.\, «A New\ , Versatile\, High-performance Digital Pulse Processor with Application to Neutron/Gamma-Ray Pulse-Shape Discrimination in Scintillator Detectors»\ , DOI:10.13140/RG.2.2.14187.18727.\n4. Van der Zwan\, L. 1968. Can. J. Ph ys.\, 46\, 1527.\n\nhttps://events.sinp.msu.ru/event/8/contributions/248/ LOCATION: Физический ф-т\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/248/ END:VEVENT BEGIN:VEVENT SUMMARY:Continuous-wave electron linacs for science and industry DTSTART;VALUE=DATE-TIME:20220715T095000Z DTEND;VALUE=DATE-TIME:20220715T101000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-259@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitry Yurov ()\nSINP MSU develop normal conducting continuous-wave linear electron accelerators since 80s. Continuous-wave li nacs compared to pulsed machines make it possible to obtain electron beams with more stable energy and lower energy spread\, reduce detectors loadin g while maintaining the average intensity of events during an experiment. We present an overview of continuous-wave accelerators for both nuclear ph ysics research and applied purposes\, including superconducting accelerati ng systems. We analyze the features of the design and operation of that ty pe of accelerators\, the prospects for the development of this area.\n\nht tps://events.sinp.msu.ru/event/8/contributions/259/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/259/ END:VEVENT BEGIN:VEVENT SUMMARY:PHYSICAL FEATURES OF THE VVER-1200 REACTOR CORE REFLECTOR MODEL IN SERPENT CODE DTSTART;VALUE=DATE-TIME:20220715T153000Z DTEND;VALUE=DATE-TIME:20220715T155000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-245@events.sinp.msu.ru DESCRIPTION:Speakers: Krystsina Usheva ()\nReactor codes (BIPR\, DYN3D [1] \, etc.) based on solving the neutron transport equation in the diffusion approximation are widely used to analyze stationary and transient processe s in the reactor core. To perform such type of calculation it is necessary to create a XS library - a set of macroscopic cross sections and constant s. It is usually calculated using spectral codes such as deterministic (HE LIOS\, TVS-M\, etc.) or Monte Carlo (Tripoli\, Serpent [2]\, etc.).\nWhen modeling the whole reactor core\, the question is about the boundary condi tions at the outer boundary of the fuel part. In VVER-type reactor\, the e nvironment of the fuel part (baffle and other internal elements) plays the role of a reflector for thermal neutrons\, in which there is no neutron s ource.\nTo calculate and create a XS library of sections for the reflector \, a model of ¼ reactor core was created (Fig. 1)\, which allows correctl y take into account the full spectrum of neutrons created in the fuel part of the core and interacting with a two-layered reflector (R1-R2).\n\n \nF ig. 1. Model of radial reflector.\n\nIn this paper\, a model of a radial r eflector for VVER-1200 reactor is proposed for calculating and preparing a XS library using Serpent Monte Carlo code for DYN3D diffusion code\, taki ng into account physical features at the reactor core outer boundary.\n\n1 . U. Rohde\, S. Kliem\, U. Grundmann\, S. Baier\, Y. Bilodid et. all. The reactor dynamics code DYN3D – models\, validation and applications\, Pro gress in Nuclear Energy 89\, p. 170-190 (2016).\n2. J. Leppänen. Serpent – a Continuous-energy Monte Carlo Reactor Physics Burnup Calculation Cod e. User’s Manual. VTT Technical Research Centre of Finland\, 164 p. (201 5).\n\nhttps://events.sinp.msu.ru/event/8/contributions/245/ LOCATION: НИИЯФ\, 19 к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/245/ END:VEVENT BEGIN:VEVENT SUMMARY:Energy dependence of triangular flow for identified hadrons in Au+ Au collisions at $\\sqrt{s_{NN}} = 14.5 - 62.4$ GeV from the STAR experime nt DTSTART;VALUE=DATE-TIME:20220712T070000Z DTEND;VALUE=DATE-TIME:20220712T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-205@events.sinp.msu.ru DESCRIPTION:Speakers: Alexey Povarov (NRNU MEPhI)\nAuthor: Alexey Povarov (for the STAR Collaboration)\nNational Research Nuclear University MEPhI\, Moscow\, Russia\nE-mail: povarovas@gmail.com\n\nHeavy-ion collisions crea te matter which is characterized by high temperature and energy density\, called Quark-Gluon Plasma (QGP). One of the methods for studying the trans port properties and equation of state of the created matter is the measure ment of azimuthal anisotropy of particles using the Fourier expansion of t he azimuthal angle with respect to the event plane. The second order Fouri er coefficient $\\upsilon_{2}$ is called elliptic flow and is sensitive to the pressure gradients arising in the region of overlapping nuclei. The t hird order coefficient $\\upsilon_{3}$ (triangular flow) is sensitive to t he fluctuations of nucleons in the initial state of colliding nuclei and t herefore $\\upsilon_{3}$ weakly depends on the collision centrality. Theor etical studies show that $\\upsilon_{3}$ is more sensitive to viscous effe cts than $\\upsilon_{2}$\, making triangular flow an ideal harmonic for st udying the viscosity.\n \nThis work is devoted to the study of triangul ar flow in a wide energy range of Au+Au collisions from the STAR experimen t at RHIC ($\\sqrt{s_{NN}}$ = 14.5\, 19.6\, 27\, 39\, 62.4 GeV). New measu rements of triangular flow will be presented as a function of particle tra nsverse momenta ($\\text{p}_{\\text{T}}$) and collision energy. Physics im plications will be discussed.\n\nhttps://events.sinp.msu.ru/event/8/contri butions/205/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/205/ END:VEVENT BEGIN:VEVENT SUMMARY:DEVELOPMENT OF SIMPLE TREATMENT PLANNING SYSTEM BASED ON TOPAS MC GEANT4 CODE FOR FAST NEUTRON IRRADIATION DTSTART;VALUE=DATE-TIME:20220712T122000Z DTEND;VALUE=DATE-TIME:20220712T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-361@events.sinp.msu.ru DESCRIPTION:Speakers: Maksim Trushin (NRNU MEPhI)\nAt present\, NIITFA is developing a new medical device for fast-neutron radiotherapy based on the 14.1 MeV neutron source NG-24[1]. \nThe neutron source NG-24 was simulate d in the Topas MC Geant4 environment. The simulation result was compared w ith the previously obtained result from the MCNP code[2].\nA Python consol e program for running multiple Topas simulations has been developed. The d eveloped program supports the following functions: setting several irradia tion fields (SDS\, gantry rotation angle)\, loading the patient's CT and H U-ED curve for Geant4 simulation\, viewing the received dose distributions in transverse coronar and siggital projections\n\nKeywords: neutron gener ator\, fast-neutron radiotherapy\, Monte Carlo method\, Python3 \n\n1. В. М. Литяев\, В.В. Фёдоров\, А.Н.Соловьёв\, С.Е. Ульяненко Устройство для формирования терапевтических нейтронных полей на баз е генератора НГ–24. Медицинская физика 201 6 №2 94-100\, Москва 2016 \n2.Морозов В.Н.\, Моисее в А.Н.\, Холомов И.А.\, Зверев В.И. Исследова ние дозиметрических характеристик гене ратора нейтронов НГ-24 для терапевтическ ого использования\, Троицк\, Россия 2020\n\nht tps://events.sinp.msu.ru/event/8/contributions/361/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/361/ END:VEVENT BEGIN:VEVENT SUMMARY:First experiment at the Super Heavy Element Factory. New data in t he 243Am + 48Ca reaction. DTSTART;VALUE=DATE-TIME:20220712T070000Z DTEND;VALUE=DATE-TIME:20220712T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-591@events.sinp.msu.ru DESCRIPTION:Speakers: Nikita Kovrizhnykh (Joint Institute for Nuclear Rese arch)\nWe present results of the first experiments aimed at the synthesis of Mc isotopes in the 243Am+48Ca reaction performed at the new gas-filled separator DGFRS-2 on-line to the new cyclotron DC280 at the SHE Factory at JINR. One hundred-ten new decay chains of 288Mc\, four new decay chains o f 287Mc and ten chains assigned to 289Mc were detected. The α-decay of 26 8Db with an energy of 7.6-8.0 MeV\, half-life of 16(+6 -4) h\, and a branc h of 55(+20 -15) was registered for the first time\, and a new spontaneous ly fissioning isotope 264Lr with a half-life of 4.9(+2.1 -1.3) h was ident ified. Decay chain of the new superheavy isotope 286Mc has been registered . We firstly observed spontaneous fission of 279Rg. The cross section for the 243Am(48Ca\,3n)288Mc reaction was measured to be 17.1(+6.3 -4.7) pb\, which is the largest value for a superheavy nucleus at the Island of Stabi lity. The cross section of 243Am(48Ca\,5n)286Mc was measured for first tim e.\n\nhttps://events.sinp.msu.ru/event/8/contributions/591/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/591/ END:VEVENT BEGIN:VEVENT SUMMARY:Optimal bounds on the speed of subspace evolution governed by a ti me-dependent Hamiltonian DTSTART;VALUE=DATE-TIME:20220715T072000Z DTEND;VALUE=DATE-TIME:20220715T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-252@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander K. Motovilov (BLTP\, JINR\, Dubna)\nBy a q uantum speed limit one usually understands an estimate on how fast a quan tum system can evolve between two distinguishable states. The most known q uantum speed limit is given in the form of the celebrated Mandelstam-Tamm inequality that bounds the speed of the evolution of a state in terms of i ts energy dispersion. In contrast to the basic Mandelstam-Tamm inequality\ , we are concerned not with a single state but with a (possibly infinite-d imensional) subspace which is subject to the Schroedinger evolution. By us ing the concept of maximal angle between subspaces we derive optimal bound s on the speed of such a subspace evolution. Our present study extends the results obtained in [1\,2] for time-independent Hamiltonians to the case of subspace evolution governed by a (possibly unbounded) *time-dependent* Hamiltonian.\n\n\n[1] S.Albeverio and A.K.Motovilov\, *Quantum speed limit s for time evolution of a system subspace*\, Particles & Nuclei (to appear )\; arXiv:2011.02778.\n\n[2] S.Albeverio and A.K.Motovilov\, *Optimal boun ds on the speed of subspace evolution*\, J. Phys. A: Math. Theor. (to appe ar)\; arXiv:2111.05677.\n\nhttps://events.sinp.msu.ru/event/8/contribution s/252/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/252/ END:VEVENT BEGIN:VEVENT SUMMARY:QUARK-GLUON STRING MODEL (QGSM) AND ITS APPLICATION FOR INELASTIC DC INTERACTIONS AT A MOMENTUM OF 4.2 A GEV/S DTSTART;VALUE=DATE-TIME:20220713T070000Z DTEND;VALUE=DATE-TIME:20220713T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-249@events.sinp.msu.ru DESCRIPTION:Speakers: raxmatillo bekmirzaev (nurmurodovich)\nQUARK-GLUON S TRING MODEL (QGSM) AND ITS APPLICATION FOR INELASTIC DC INTERACTIONS AT A MOMENTUM OF 4.2 A GEV/S\n\nR. Bekmirzaev1\, M.U.Sultanov2\, S. Yuldashev3\ n\n 1State Pedagogical Institutes\, 130100\, Jizzakh\, Uzbekistan\nbekmirz aev@mail.ru\n2State Architecture and Civil Engineering Institute\, Samarka nd\, Uzbekistan \n3Samarkand State University\, Samarkand\, Uzbekistan\n\n The construction of high-energy accelerators for hadrons and the creation of detectors that record reaction products are very costly. At the same ti me\, there is a need to compare the experimental conditions and large-scal e experimental data with the results of theoretical calculations. As a res ult\, a large number of software generators for the collisions of hadrons and nuclei of different energies have emerged. These programs are based on a standard model (various phenomenological models) of strong and non-elec tric interactions. Of these\, ISAJET and Lund University programs\, includ ing PYTHIA and FRITIOF\, are popular. These programs open up almost all ar eas of transmitted momentum (P2\, quarks and from strong scattering of glu ons to the formation and decay of hadrons). In this work\, the main provi sions of the Quark-gluon string model for describing inelastic interaction s of light nuclei at high energies are presented. The main ideas of the CG SM model are given\, such as the process of formation of quark-gluon strin gs and the choice of their limited number\, modeling of string breaking wi th the formation of hadrons [1]. The data of theoretical calculations by C GSM are compared with the experimental results obtained for dC-inelastic i nteractions. The technique for obtaining experimental data is briefly desc ribed. Analysis and comparison of model and experimental information shows that the CGSM model reproduces well the interactions of light colliding n uclei at energies of 4.2 GeV/s\, and it is applicable up to the energy of nuclear interactions of 10 GeV/nucleon [2-3]. Low experimental data on 4π geometry were obtained. Therefore\, it is important to study the formatio n of cumulative particles in large experimental statistics. \nReference\n 1. Feynman R.P.\, Field R.D. Nucl.Phys. V.B136\, (1978). p.1.\n2. Olimov\ , K. et al. Reports of Uzbek Academy of Sciences 29\, 4 \, (2011) \n3. O limov\, K. et al.\, International Journal of Modern Physics E\, 29\, 4 ( 2020).\n\nhttps://events.sinp.msu.ru/event/8/contributions/249/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/249/ END:VEVENT BEGIN:VEVENT SUMMARY:MEASURING THE RADIATION YIELD COEFFICIENTS OF SMALL FIELDS WITH IB A DETECTORS DTSTART;VALUE=DATE-TIME:20220712T153000Z DTEND;VALUE=DATE-TIME:20220712T155000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-344@events.sinp.msu.ru DESCRIPTION:Speakers: V.S. Piskunov ()\nThe objectives of this work are: m easurement of the data set of coefficients of radiative output (Output Fac tors - OF) using five detectors and data validation\; determine how OF cha nges when using two types of field formation\, namely\, collimator shutter s and a multileaf collimator (MLC)\; investigate the dependence of the out put factors on the source-to-surface distance (SSD) and measurement depth\ , as well as on the type of detector used in the measurements.\nThe measur ements were carried out in 6 MV photon beams with a smoothing filter on a TrueBeam linear accelerator. Five IBA detectors were used: two diode detec tors (PFD and SFD) and three ionization chambers (CC 01\, CC 04 and CC 13) . Margins varied from 10cm x 10cm to 1cm x 1cm. Measurements were made wit h various combinations: SSD = 100cm and depth = 10cm\, SSD = 95cm and dept h = 5cm. The fields were formed by collimator shutters and MLC.\nThe radia tion yield coefficient increases with decreasing SSD and measurement depth . An unshielded SFD diode detector has an insufficient response at low fie lds\, a shielded PFD diode\, on the contrary\, has an excessive response. Ionization chambers have insufficient response at a field size of 1 cm x 1 cm due to their finite volume. At a field size of 1 cm x 1 cm\, for any g iven SSD and depth\, there is a large scatter in measured output factors b etween detectors. A particularly weak response in this field is observed i n the CC13 ionization chamber with a volume of 0.13 cm3\, which is largely due to the effect of volume averaging\; this chamber is not suitable for measurements in such low fields.\nTo correct the output factors\, it is ne cessary to use correction factors or calculate the coefficients based on t he measurement results [1].\n\n1. Dosimetry of Small Static Fields Used in External Beam Radiotherapy: An International Code of Practice for Referen ce and Relative Dose determination. / IAEA TRS 483\, Vienna\, 2017.\n\nhtt ps://events.sinp.msu.ru/event/8/contributions/344/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/344/ END:VEVENT BEGIN:VEVENT SUMMARY:A modified quasiparticle model in the expansion of early universe of quark gluon plasma DTSTART;VALUE=DATE-TIME:20220713T130000Z DTEND;VALUE=DATE-TIME:20220713T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-466@events.sinp.msu.ru DESCRIPTION:Speakers: Yogesh Kumar (Deshbandhu College\, University of Del hi\, Kalkaji\, New Delhi)\nA modified quasiparticle model approach is used in the expansion of early universe of quark gluon plasma. We also used Fr iedmann equation to determine the precise time evolution of the thermodyna mic parameters in the early universe of quark gluon plasma (QGP). The outp ut for time variation of the energy density and the time evolution of temp erature using finite value of thermal dependent quark mass have plotted. T he results show the time evolution of the early universe which also helps in the calculations of other thermodynamic variables like energy density\, pressure\, entropy etc. This provides deep understanding for the evolutio n of early universe of quark gluon plasma.\n\nhttps://events.sinp.msu.ru/e vent/8/contributions/466/ LOCATION: Физический ф-т\, ауд 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/466/ END:VEVENT BEGIN:VEVENT SUMMARY:Pion femtoscopy in Au+Au collisions at sqrt(sNN) = 3 GeV in the ST AR experiment DTSTART;VALUE=DATE-TIME:20220712T072000Z DTEND;VALUE=DATE-TIME:20220712T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-504@events.sinp.msu.ru DESCRIPTION:Speakers: Anna Kraeva ()\nPion femtoscopy in Au+Au collisions at $\\sqrt{s_{NN}} = 3$ GeV in the STAR experiment\n\nA. Kraeva (for the S TAR Collaboration)\nE-mail: annakraeva555@gmail.com\nNational Research Nuc lear University MEPhI\, Kashirskoe highway 31\, Moscow\, 115409\, Russia\n \n\nThere is a method that allows directly measuring the spatio-temporal e xtent of the region where hadrons are emitted and the parameters of the nu clear-nuclear interaction\, called femtoscopic correlation [1]. In heavy-i on collisions\, femtoscopy is an important tool for studying the geometric and dynamic characteristics of the emission region.\nTwo-particle momentu m correlations of identical particles in nuclear-nuclear collisions make i t possible to extract femtoscopic parameters (radii of emission region\, $ R$\, and correlation strength\, $\\lambda$) [2]. Reaction dynamic is refle cted in the femtoscopic radii dependence on pair transverse momentum\, $k_ T$.\nThis work is devoted to the study of two-particle momentum correlatio ns of identical pions produced in collisions of gold nuclei in the STAR ex periment at the RHIC at $\\sqrt{s_{NN}} = 3$ GeV. The extracted three-dime nsional femtoscopic radii ($R_{out}$\, $R_{side}$\, $R_{long}$) are measur ed as a function of collision centrality and transverse momentum of the pa irs.\n\n\nReferences:\n[1] Podgoretsky M.I. Interference correlations of i dentical pions\, Sov. J. Nucl. Phys. – 1989. – V.20. – P.3.\n[2] Lis a M.A. et al. Femtoscopy in relativistic heavy ion collisions: two decades \nof progress\, Annu. Rev. Nucl. Part. Sci. – 2005. – V.55. – P.357. \n\nhttps://events.sinp.msu.ru/event/8/contributions/504/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/504/ END:VEVENT BEGIN:VEVENT SUMMARY:Determination of the oxygen content in the investigated samples us ing delayed neutron counting technique DTSTART;VALUE=DATE-TIME:20220713T120000Z DTEND;VALUE=DATE-TIME:20220713T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-253@events.sinp.msu.ru DESCRIPTION:Speakers: Konstantin Mitrofanov ()\nIn the present work delaye d neutron registration technique have been applied to the issue of oxygen content definition in the samples of the known mass and morphology. For th is purpose the set up have been assembled on the neutron physical research channel of Tandem-3M accelerator of SSC RF–IPPE which consists of the c harged particles beam deflection system\, integrator of the current of cha rged particles hitting the neutron generating target\, primary neutron bea m monitor\, spectrometer of primary neutrons\, pneumatic transport system of the samples under investigation\, 4π-detector of neutrons\, constructe d on the base of helium-3 filled proportional counters and experiment cont rol system. Oxygen content have been determined using comparative analysis of the measurement results of the temporal dependences of delayed neutron intensity after irradiation of the control sample and investigated sample s in the fast neutron flux generated in the Li(d\,n) reaction from infinit ely thick lithium target. Experimental procedure due to the temporary natu re of delayed neutron emission phenomenon have been consisted in the carry ing out the cyclic consequence of the stages of sample irradiation by neut rons generated from the target\, sample movement to the neutron detector a nd the measurement of the temporal dependence of delayed neutron intensity .\n\nhttps://events.sinp.msu.ru/event/8/contributions/253/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/253/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF DOSE TRANSMISSION FROM A MULTIPLE COLLIMATOR ON VARIAN HA LCYON AND VARIAN TRUEBEAM STX LINEAR ACCELERATORS DTSTART;VALUE=DATE-TIME:20220714T143000Z DTEND;VALUE=DATE-TIME:20220714T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-254@events.sinp.msu.ru DESCRIPTION:Speakers: Elena Morozova ()\nThe study of dose leakage is a v ital topic because the number of patients who have developed delayed radia tion injuries is increasing every year [1].\nThe linear accelerator Varian Halcyon V1.0 (Varian Medical Systems\, Palo Alto\, California\, USA) [2] without collimation shutters has recently been put into operation and is n ow gaining popularity in oncology clinics. The Halcyon MLC system features a unique stepped two-layer design consisting of a distal and proximal lob e layer. The primary and secondary collimators are fixed\, there is no fla ttering filter [3-4].\nSimilar studies were carried out on the Varian True Beam STx accelerator\, which combines the capabilities of radiation therap y and radiosurgery with millimeter precision. The TrueBeam STx accelerator is equipped with a high resolution multi-leaf collimator (HD120 MLC)\, wh ich has two blocks of 60 wolfram leaves each [5].\nThe aim of this study i s to experimentally measure dose leakage from the Varian Halcyon multileaf collimator and HD120 MLC. To achieve this goal\, the following experiment s were carried out on the Varian Halcyon and Varian TrueBeam STx linear ac celerator with an energy of boundary photons of 6 MeV:\n1. Study of the in fluence of the field size on dose leakage. IMRT plans were created to irra diate the phantom with fields of various sizes in the Eclipse planning sys tem. The dose profile was measured with an IC Profiler SunNuclear array de tector and an SNC125c ionization chamber. A Solid Water GAMMEX water equiv alent phantom and a 3D Scanner SunNeclear water phantom were used.\n2. Mea surement of dose leakage at a small field size. In this experiment\, an ir radiation plan for the 3D Scanner SunNuclear water phantom was created. Th e multi-leaf collimator was positioned in such a way as to create a rectan gular beam with a size of 1×2 〖cm〗^2. An ionization chamber of the SN C125c type was used.\nThe experiment showed that despite the fact that the same dose of 200 monitor units was applied in all experiments\, the dose leakage in the collimator becomes larger with increasing field size. For t he Varian Halcyon collimator at a distance of 16 cm from the central axis\ , doses of 0.003\, 0.012\, 0.029\, 0.052\, 0.092\, 0.128 Gy are observed f or fields with dimensions of 5x5\, 10x10\, 15x15\, 20x20\, 25x25\, and 28x 28 〖cm〗^2\, respectively. For the HD120 MLC collimator at a distance o f 16 cm from the central axis\, doses of 0.014\, 0.33\, 0.62\, 0.96% of th e maximum dose are observed for fields with dimensions of 10x10\, 16x16\, 20x20 and 24x24 〖cm〗^2\, respectively.\nThe results of the current stu dy are important for understanding how field size affects dose leakage.\n\ n\n\nLiterature\n\n1. Takam R\, Bezak E\, Marcu LG\, Yeoh E. Out-of-field neutron and leakage photon exposures and the associated risk of second can cers in high-energy photon radiotherapy: current status. Radiat Res. 2011\ ;176:508–520\;\n2Varian Medical Systems. Halcyon Brochure. 2017 URL: htt ps://www.varian.com/sites/default/files/resource_attachments/Halcyon_broch ure_RAD10443B_092417.pdf. (Accessed: 06/08/2020).\n3. Lim TY\, Dragojević I\, Hoffman D\, Flores-Martinez E\, Kim GY. Characterization of the Halcy on™ multi-leaf collimator system. J Appl Clin Med Phys. 2019\; 20:106– 114\;\n4. NCRP\, NCRP Report 170. Second Primary Cancers and Cardiovascula r Disease After Radiation Therapy. Bethesda\, Md: National Council on Radi ation Protection and Measurements\; 2011\;\n5.Varian TrueBeam STx Specific ations:\n https://www.equiphos.com/wp-content/uploads/2015/06/TrueBeam_STx _Specifications_10093D_0112.pdf\n\nhttps://events.sinp.msu.ru/event/8/cont ributions/254/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/254/ END:VEVENT BEGIN:VEVENT SUMMARY:ESTIMATION OF THE CONTRIBUTION OF SECONDARY NEUTRONS TO THE ABSORB ED DOSE DURING THE OPERATION OF MEDICAL LINAC DTSTART;VALUE=DATE-TIME:20220714T145000Z DTEND;VALUE=DATE-TIME:20220714T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-246@events.sinp.msu.ru DESCRIPTION:Speakers: Alexey Shcherbakov (Lomonosov Moscow state universit y)\nBremsstrahlung obtained during the operation of medical linac is used in the treatment of various types of cancer. At photon energies above 8 Me V\, secondary neutrons are produced as a result of photonuclear reactions. This radiation is able to cause additional dose load on the patient\, as well as unacceptable working conditions for personnel.\nThe contribution t o the dose due to secondary neutrons is not estimated and is not taken int o account in modern planning systems. The relatively small contribution of photoneutrons to the radiation flux leads to a large increase in the dose in the irradiated tissues\, which is unacceptable in the treatment of onc ology.\nThe head of a medical linear accelerator is modeled in order to es timate the contribution of secondary particles to the dose. The model is v alidated based on the depth dose distribution in water. As the result of t he study\, the spectra of secondary neutrons were obtained\, their average energy was estimated\, and the contribution of photoneutron radiation to the dose was calculated.\n\nhttps://events.sinp.msu.ru/event/8/contributio ns/246/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/246/ END:VEVENT BEGIN:VEVENT SUMMARY:TRANSVERSE MOMENTUM FLUCTUATIONS IN NICA AND SPS ENERGY RANGE DTSTART;VALUE=DATE-TIME:20220713T072000Z DTEND;VALUE=DATE-TIME:20220713T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-395@events.sinp.msu.ru DESCRIPTION:Speakers: A. P. Zviagina ()\nCorrelations between multiplicit y of charge particles and mean transverse momentum were observed experimen tally in p+p collisions from top SPS energy to LHC energy. The change in t he correlation function’s shape with collision energy was successfully d escribed by the multi-pomeron exchange model as an interplay of string fus ion and energy-momentum conservation [1]. Previously\, it was shown that p henomenological resonance-to-strings transition leads to rapid changes in the magnitude of pt-n correlations at the NICA energy range [2]. The mean transverse momentum is sensitive to the initial energy density [3] and\, t herefore\, its event-by-event fluctuations are strongly affected by the ev ent (centrality) selection. In this contribution results of the pt-n corre lations analysis [2] would be extended by Monte-Carlo simulations studies for the pt-n strongly intensive observables [4]\, pt cumulants [5] and two -particle pt correlation measures [6]. That would allow testing the influe nce of the resonance-to-string transition and the role of conservation law s of the given observables.\n\n1. N. Armesto\, D. A\, Derkach\, and G. A. Feofilov\, Phys. Atom. Nucl. 71\, 2087 (2008).\n2. A. Zvyagina\, E. Andron ov\, Phys. Part. Nucl. 53(2)\, 117 (2022).\n3. E. V. Shuryak\, Phys. Lett. B 423\, 9 (1998).\n4. M. Gorenstein\, M. Gazdzicki\, Phys. Rev. C 84\, 01 4904 (2011).\n5. S. Bhatta\, C. Zhang\, and J. Jia\, Phys. Rev. C 105 (2)\ , 024904 (2022).\n6. M. Cody et al.\, arXiv:2110.04884 [nucl-th].\n\nhttps ://events.sinp.msu.ru/event/8/contributions/395/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/395/ END:VEVENT BEGIN:VEVENT SUMMARY:Direct photon and neutral meson production results from ALICE expe riment DTSTART;VALUE=DATE-TIME:20220712T091000Z DTEND;VALUE=DATE-TIME:20220712T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-203@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitry Blau (NRC "Kurchatov Institute")\nThe ALICE e xperiment at the LHC is dedicated to the study of the hot and dense medium produced in heavy-ion collisions\, the so-called quark-gluon plasma (QGP) . Neutral meson spectra and direct photon spectra at high $p_{\\rm T}$ imp ose constraints on parton distribution functions in protons and nuclei\, a nd provide information about the transport properties of the QGP. The temp erature of the hot fireball created in a heavy-ion collision can be studie d via the measurement of low-$p_{\\rm T}$ direct photons. \n\nPhotons are reconstructed in ALICE with two complementary methods\, using the electrom agnetic calorimeters or via the reconstruction of e$^+$e$^-$ pairs from co nversions in the ALICE detector material using the central tracking system . This approach provides reliable cross checks of results and allows to re duce the statistical and systematic uncertainties of the measurements. In addition\, the fraction of direct photons to inclusive photons can be meas ured with virtual photons (dielectrons) at low $p_{\\rm T}$ with different systematic uncertainties.\n\nWe report recent results from ALICE on the d irect photon and neutral meson measurements in pp\, p-Pb\, and Pb-Pb colli sions and compare them to model calculations.\n\nhttps://events.sinp.msu.r u/event/8/contributions/203/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/203/ END:VEVENT BEGIN:VEVENT SUMMARY:Agility multileaf collimator parameters optimization in the indepe ndent dose calculation system DTSTART;VALUE=DATE-TIME:20220713T082000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-287@events.sinp.msu.ru DESCRIPTION:Speakers: Anna Loginova (Dmitry Rogachev National Research Cen ter of Pediatric Hematology\, Oncology and Immunology\, Moscow\, Russia)\n The MIM SureCalc® is MonteCarlo Plan verification system (MIM Software In c. Clevland\, OH\, USA) used to provide an independent dose calculation ca lculation check of radiotherapy treatment plans. These module include a vo xel based Monte Carlo engine to calculate the dose in the patient. The inp ut data are DICOM RT Image\, RT Structure and RT dose derived from treatme nt planning system. The algorithm uses virtual source models\, which are a nalytically expressed phase space models generated from BEAMnrs [1]. The m odel of the linac is created by the software manufacturer based on the dat a provided by the users (depth dose distributions\, beam profiles\, and ra diation output factors)\nThe aim of this study was to assess the MIM SureC alc® MonteCarlo Plan verification module and optimize the calculation par ameters according the measured data obtained using Elekta linear accelerat or equipped with Agility™ multileaf collimator (MLC).\nThe modeling accu racy of MLC was assessed by comparing the calculated and measured dose dis tributions in L-shaped test radiation fields (four bordering segments in t he form of the letter “L”). The measurements were performed with the m assive of ionization chambers MatriXX (IBA Dosimetry). The modeling of the MLС offsets (the difference between the given leaf position and its actu al value)\, as well as the leaf groove values (characteristic of the field edge formed by the side surfaces of the MLC leaf) was evaluated using Gam ma analysis [2].\nThe optimization began with all parameters set to their default value. Comparison of the calculated test fields with the measureme nts showed that correction of the leaf groove leakage and offset values ar e required. The offset value of 0.1 mm was selected that best replicated m easurements with the Agility™ MLC. Correction of leakage values was poss ible only by changing the virtual source model and required additional act ions from the manufacturer.\nThe adjustment of the above parameters result ed in improved 2D Gamma of 2% 1 mm analysis passing rates up to 98.0% when applying the global and 95.2% when applying the local normalization.\nThe appropriate optimization of MLC parameters responsible for the properties of a particular device makes it possible to achieve high accuracy in MIM SureCalc® MonteCarlo Plan calculation.\n\n1. Rogers DW\, Faddegon BA\, Di ng GX\, Ma CM\, We J\, Mackie TR. BEAM: a Monte Carlo code to simulate rad iotherapy treatment units. Med Phys.—1995.—V.22.—P.503-24\n2. Daniel A. Low\, William B. Harms\, Sasa Mutic\, James A. Purdy A technique for t he quantitative evaluation of dose distributions // Med. Phys.—1998.—V .25.— P.656-661\n\nhttps://events.sinp.msu.ru/event/8/contributions/287/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/287/ END:VEVENT BEGIN:VEVENT SUMMARY:Test of full PSD readout chain at the mCBM DTSTART;VALUE=DATE-TIME:20220712T145000Z DTEND;VALUE=DATE-TIME:20220712T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-258@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitry Finogeev ()\nThe forward hadron calorimeter ( PSD – Projectile Spectator Detector will be used at the Compressed Baryo nic Matter (CBM) experiment at FAIR to measure the nucleus-nucleus collisi on centrality and orientation of the reaction plane. The PSD is a sampling lead/scintillator with modular transverse structure and longitudinal segm entation. The PSD has 46 modules with 10 longitudinal sections in each mod ule. Light readout from each section is provided by Hamamatsu MPPC install ed at the rare side of modules.\nThe PSD FEE and readout system is based o n the ADC FPGA board\, which was originally designed for ECAL at PANDA. Th is board employs two Kintex-7 FPGAs\, which are processing the incoming da ta from ADCs with 14-bit resolution and 125MHz digitization rate for 32 ch annels per one FPGA. Due to high radiation doses and neutron fluences expe cted at the CBM\, PSD readout electronics will be placed in the radiation protected room. Boards with photodetectors (MPPCs) will be placed on the b ack plane of the PSD without preamplifiers and will be connected with 60m coaxial cable with readout electronics placed outside of the cave. \nThe d eveloped data acquisition system registers signals from 2.5 mV to 1.5 V\, which provides coverage of the dynamic range x500 when adjusting the volt age corresponding to photodetectors for temperature correction of their ga in. Direct digitization of low amplitude signals without the use of active electronics on the detector side is a new approach for the detector's rea dout system in nuclear physics\, which makes it possible to realize the ma ximum possible dynamic range of the detector.\nThe full chain of the FEE a nd readout electronics of one PSD module - "mini PSD" (mPSD) has been ass embled at mCBM. The readout has been integrated into mCBM trigger-less dat a acquisition system. Details of the PSD readout electronics\, signal proc essing and transmission within the common synchronized mCBM data transport system will be shown.\n\nhttps://events.sinp.msu.ru/event/8/contributions /258/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/258/ END:VEVENT BEGIN:VEVENT SUMMARY:Dynamic three-quasiparticle correlations in the ground state DTSTART;VALUE=DATE-TIME:20220715T130000Z DTEND;VALUE=DATE-TIME:20220715T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-260@events.sinp.msu.ru DESCRIPTION:Speakers: Mikhail Shitov (NRC "Kurchatov Institute")\nEarlier\ , three-quasiparticle correlations in the ground state ($GSC_3$) were stud ied in [1\,2] for static characteristics in the calculations of quadrupole moments in first excited 2^+ and 3^- states of Sn isotopes. Here we discu ss $GSC_3$ for transitions with the energy $ω ≠0$ between these excite d states. Calculations were performed for a large number of Sn isotopes. It was shown that\, similar to the [1\,2\,3] results\, and to the contrary to $GSC_2$ of the RPA case\, $GSC_3$ give a considerable contribution t o the B(E1) values for transitions between first excited $2^+$ and $3^-$ states. However\, there is a specifity for the pairing case: it turned out that here the $GSC_3$ role is decreased as compared with the static case [1\,2]\, but nevertheless it is rather noticeable. A comparison with the similar physical problems within the Quasiparticle-Phonon Model was perfo rmed.\n\n1. D. Voitenkov\, S. Kamerdzhiev\, S. Krewald\, E.E. Saperstein a nd S.V. Tolokonnikov\, Phys. Rev. C 85\, 054319 (2012).\n2. С. П. Кам ерджиев\, Д. А.Войтенков\, Э. Е.Саперштейн\, С. В.Толоконников\, Письма в ЖЭТФ\, том 108\, 155 (2018).\n3. М. И. Шитов\, Д. А. Войтенков\, С. П . Камерджиев\, С. В. Толоконников\, Ядерная физика\, том 85\, 1 (2022).\n\nhttps://events.sinp.msu.ru/event/ 8/contributions/260/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/260/ END:VEVENT BEGIN:VEVENT SUMMARY:NUCLEAR PHYSICS FOR THE WORLD ECONOMY DTSTART;VALUE=DATE-TIME:20220711T080500Z DTEND;VALUE=DATE-TIME:20220711T084000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-631@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Chernyaev (Lomonosov Moscow State Universi ty)\, Ekaterina Lykova ()\, Polina Borschegovskaya (Physics Department\, M.V. Lomonosov Moscow State University\, Moscow\, Russia\; Skobeltsyn Inst itute of Nuclear Physics of Lomonosov Moscow State University\, Moscow\, R ussia)\, Marina Zheltonozhskaya (Lomonosov Moscow State University)\nThis paper reviews the achievements of nuclear physics for various fields of kn owledge and unique technologies in the sectors of the world economy. It is difficult to imagine modern society without the achievements of nuclear p hysics. It is also one of the driving forces for the development of our ci vilization.\nCounting back to the first nuclear reaction carried out\, whi ch is more than a hundred years old\, we can conditionally distinguish thr ee stages in the development of nuclear physics. The first one ranges (191 9 - ~1954) from the first nuclear reaction to the creation of nuclear weap ons and energy\; the second part goes from the emergence of elementary par ticle physics to its intensive application in practical technologies (~195 0 - ~2000)\; the third stage is the dominant development of applied nuclea r physics research and technologies (since ~2000).\nThe impressive achieve ments of nuclear physics include the creation of nuclear energy\, nuclear medicine and radiation therapy\, nuclear beam diagnostics\, the widest use of nuclear physics facilities - accelerators in industry and agriculture\ , the construction of the first all-European TOKOMAK\, unique experiments on neutrino coupling\, and many others.\nThe nuclear physics development l eaves a firm confidence that the rate of nuclear technologies and methods invasion into our life will only increase.\n\n\n1. Radiacionnye tekhnologi i. Nauka. Narodnoe hozyajstvo. Medicina. Izdatel'stvo Moskovskogo universi teta Moskva\, ISBN 978-5-19-011409-6\, 231 s.\, 2019.\n2. Belousov A.V.\, Varzar S.M.\, Zheltonozhskaya M.V.\, Lykova E.N. Chernyaev. A.P. Perspekti vy razvitiya radiacionnyh tekhnologij v Rossii. Yadernaya fizika\, tom 8 2\, № 5\, s. 425-439 DOI\, 2019\n\nhttps://events.sinp.msu.ru/event/8/co ntributions/631/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/631/ END:VEVENT BEGIN:VEVENT SUMMARY:Geant4 status and applications: from HEP to nuclear medicine DTSTART;VALUE=DATE-TIME:20220711T124500Z DTEND;VALUE=DATE-TIME:20220711T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-633@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Ivantchenko (Тomsk State University)\n...\ n\nhttps://events.sinp.msu.ru/event/8/contributions/633/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/633/ END:VEVENT BEGIN:VEVENT SUMMARY:Heavy-ion physics with CMS detector DTSTART;VALUE=DATE-TIME:20220713T090500Z DTEND;VALUE=DATE-TIME:20220713T094000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-594@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Petrushanko (Skobeltsyn Institute of Nuclear Physics\, Lomonosov Moscow State University)\nWe present a selection of ve ry recent results by the CMS collaboration on heavy-ion physics at the LHC (CERN).\n\nhttps://events.sinp.msu.ru/event/8/contributions/594/ LOCATION: Физичесий ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/594/ END:VEVENT BEGIN:VEVENT SUMMARY:Impact of accelerated electrons on the chemical parameters of chil led meat over long-term storage DTSTART;VALUE=DATE-TIME:20220714T153000Z DTEND;VALUE=DATE-TIME:20220714T155000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-623@events.sinp.msu.ru DESCRIPTION:Speakers: Victoria Ipatova (Physics Department\, M.V. Lomonoso v Moscow State University\, Moscow\, Russia\; Skobeltsyn Institute of Nucl ear Physics of Lomonosov Moscow State University\, Moscow\, Russia)\nRadia tion treatment of food products with properly chosen physical and technica l characteristics of radiation (type of radiation\, dose\, dose rate\, etc .) effectively increases the microbiological safety of products\, preservi ng their taste and nutritional properties.\nChanges in organoleptic proper ties of chilled meat products after radiation treatment are related to the degree to which ionizing radiation affects fatty acids\, which may decomp ose into volatile compounds such as alcohols\, aldehydes and ketones as a result of hydroxyl radicals and oxidation. The role of aldehydes as marker s of food radiation treatment has been discussed in the literature [1].\nT he aim of this work was to obtain dependences of concentrations of volatil e organic compounds in turkey meat on irradiation dose after exposure of 1 MeV electron beam. \nChilled turkey meat was chosen as an object of resea rch. The samples were irradiated using continuous electron accelerator UEL R-1-25-T-001 with the energy of 1 MeV. The samples were irradiated at dose s of 0.25 kGy\, 0.5 kGy\, 1 kGy\, 2 kGy\, 5 kGy\, 10 kGy and 20 kGy. The e stimation of chemical changes was carried out using Shimadzu GCMS-QP2010 U ltra gas chromatography-mass spectrometer. \nWithin 13 days after irradiat ion the changes in concentrations of volatile organic compounds in samples irradiated at different doses were monitored. \nThe dependence of aldehyd e concentrations on time after irradiation could be divided into 3 periods : the first 4 days\, then from the 4th to the 8th day\, and then from the 8th to the 13th day of observation. During the first period\, relative flu ctuations in the concentrations of this group of compounds were observed\; the second period was characterized by a decline and approach of aldehyde concentration values in the irradiated samples to the reference values. D uring the third period\, the dependence of pentanal concentration in all i rradiated samples was close to the reference values. Concentrations of ace taldehyde and heptanal on the 13th day of observation were higher in all i rradiated samples compared to the reference values.\nAnalytical relationsh ips describing changes in the concentration of various volatile compounds in turkey samples as a function of irradiation dose and time after treatme nt were proposed\, based on the fact that two competing processes take pla ce in all the samples studied: decomposition of a chemical compound and fo rmation of molecules of this compound due to the decomposition of other co mpounds.\n\n1. Joong-Ho Kwon\, Youngju Kwon\, Tusneem Kausar et al. Effect of cooking on radiation-induced chemical markers in beef and pork during storage / Journal of Food Science 77:C211-5\n\nhttps://events.sinp.msu.ru/ event/8/contributions/623/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/623/ END:VEVENT BEGIN:VEVENT SUMMARY:DEVELOPMENT OF A METHOD FOR MONITORING THE ABSORBED DOSE IN PHOTON RADIATION THERAPY DTSTART;VALUE=DATE-TIME:20220714T132000Z DTEND;VALUE=DATE-TIME:20220714T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-576@events.sinp.msu.ru DESCRIPTION:Speakers: Artemii Sinelnikov ()\nNew results of a study aimed at developing a method for upgrading existing medical electron accelerator s\, which can become a real-time method for assessing the dose distributio n in the patient's body during irradiation\, are presented [1\,2]. The pap er presents the idea of creating a mathematical model that makes it possib le to estimate the distribution of the absorbed dose in the studied tissue area by the distribution of annihilation photons arising in the process o f irradiation.\n\nTo study the proposed method\, a computer experiment was performed using the GEANT4 package based on the Monte Carlo method. As pa rt of the work performed\, the correlation between the distribution of the absorbed dose of photon radiation and the distribution of positron annihi lation coordinates was estimated\, and the energy spectra of bremsstrahlun g and annihilation photons were analyzed.\n\nThe study was supported by th e Interdisciplinary Scientific and Educational School of Moscow University “Photonic and Quantum Technologies. Digital Medicine.\n\n1. Sinelnikov A.G.\, Chernyaev A.P.\, Lykova E.N. et al.\, Med. Phys. 2020. №1 (85). P . 85-89\n2. Синельников А.Г.\, Черняев А.П.\, Уче н. зап. физ. фак-та Моск. ун-та. 2021. №4. С. 21405 01.\n\nhttps://events.sinp.msu.ru/event/8/contributions/576/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/576/ END:VEVENT BEGIN:VEVENT SUMMARY:ASYMPTOTIC NORMALIZATION COEFFICIENTS AND THE NEUTRON WIDTHS FOR $ ^{30}$Si+n $\\to ^{31}$Si FROM THE PERIPHERAL $^{30}$Si($d\,p$)$^{31}$Si R EACTION DTSTART;VALUE=DATE-TIME:20220712T093000Z DTEND;VALUE=DATE-TIME:20220712T095000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-310@events.sinp.msu.ru DESCRIPTION:Speakers: Erkinjon Ikromkhonov (Institute of Nuclear Physics\, Academy of Sciences of Uzbekistan)\nUsually the differential cross sectio ns (DCSs) of nucleon transfer reactions (NTR) are analyzed within the conv entional DWBA for determination of a nucleonic spectroscopic factor S (SF) by normalization of the calculated DCS to the experimental data ([1] and references therein). The SF have strong dependence on the single-particle potential parameters. In contrast of the SF\, the values of the asymptotic normalization coefficients (ANCs) [2] found from the analysis of the peri pheral NTR are fairly weakly dependent on the single-particle potential pa rameters. The modified DWBA [3] and the dispersion peripheral pole model ( DPPM) [4] can be used for determination of the ANCs from the analysis of t he DCSs of the peripheral NTR. In both of these methods\, the DCS is expre ssed in terms of the ANC for the removed nucleon from the residual nuclei. Nevertheless\, the modified DWBA [3] can be applied when the residual nuc leus in the reaction under consideration is formed only in bound (nonreson ance) states\, whereas the DPPM allows analyzing the DCS of the peripheral NTR populating to both bound and unbound states of the residual nucleus.\ n In the present work\, the results of the analysis of the experimental DC Ss for the $^{30}$Si($d\,p$)$^{31}$Si reaction populating to the bound and unbound (resonance) states of the residual nuclei measured at the project ile deuteron energy 12.3 MeV [5] are presented. The analysis were perform ed within the framework of the DPPM [4] and MDWBA [3] with correct taking into account the three-body Coulomb dynamics in the transfer pole mechanis m and Coulomb-nuclear distorted effects in the exit and entrance channels [6]. \n The analysis shows that the DCSs calculated within MDWBA [3] and D PPM [4] are in a good agreement with the experimental data. The new values of the ANC for $^{30}$Si+n $\\to ^{31}$Si with their uncertainties corres ponding to the bound states of the $^{31}$Si nuclei are obtained from the analysis of the experimental DCSs of the reaction $^{30}$Si($d\,p$)$^{31}$ Si within DPPM [4] and MDWBA [3]. The neutron widths for the resonance sta tes of the 31Si nuclei are obtained from the analysis of the experimental DCSs of the reaction $^{30}$Si($d\,p$)$^{31}$Si within DPPM [4].\n\nREFERE NCES\n1. S.A.Goncharov et al.\, Yad.Fiz. 35(1982) 662\n2. L.D.Blokhintsev et al.\, Sov. J. Part. Nucl.8(1977) 485\n3. A.M.Mukhamedzhanov et al.\, Ph ys.Rev.C56(1997) 1302\n4. E.I.Dolinskii\, P.O.Dzahamalov\, A.M.Mukhamedzha nov.\, Nucl.Phys.A202 (1973) 97.\n5. S.Piskor\, J. Novak et al.\, Nucl. Ph ys A 662 (2000) 112-124\n6. G.V.Avakov et al.\, Sov. J.Nucl.Phys.43(1986)5 24\n\nhttps://events.sinp.msu.ru/event/8/contributions/310/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/310/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigation of the features of bone implants surface condition d uring combined radiation sterilization DTSTART;VALUE=DATE-TIME:20220714T141000Z DTEND;VALUE=DATE-TIME:20220714T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-207@events.sinp.msu.ru DESCRIPTION:Speakers: Nadezhda Nikolaeva (North-Eastern Federal University )\nThe relevance of research on the creation of new\, effective and safe a pproaches to the sterilization of bioimplants is beyond doubt due to the h igh prevalence of diseases and the growth of traumatic injuries of the bon e and joint apparatus. The maximum reduction of the radiation dose\, elimi nation of the side effects of radiation\, as well as ensuring absolute ste rility of the transplant is an important interdisciplinary task. A promisi ng solution is the use of combined technologies combining ozone-oxygen mix ture treatment at the first stage with subsequent radiation exposure at th e second stage [1].\nThe material for the study was samples of native bovi ne bone tissue made and processed on the basis of the joint Laboratory of Biomedical Technologies (Lomonosov Moscow State University – VILAR). The surface structure of bone fragments was studied by scanning electron micr oscopy (SEM) using JSM-7800F (Japanese Electron Optics Laboratory\, Japan) . Morphofunctional characteristics of the surface of bone implants\, inclu ding its relief and porosity\, play an essential role in the implementatio n of bone grafting.\nThe results of changes in some of these characteristi cs obtained earlier during radiation exposure are known [2]. The effects o f ozone have not been sufficiently investigated to date. In our first work s\, it was shown that ozone treatment does not lead to significant morphol ogical changes in the surface of bone samples [3]\, as well as microhardne ss parameters [4]. Of particular interest are new data on the elemental co mposition of bone implants [3]. This research was performed at the NEFU Ra diation Technologies Laboratory within the framework of the state assignme nt of the Ministry of Science and Higher Education of the Russian Federati on No. FSRG-2021-0014 and has been supported by the Interdisciplinary Scie ntific and Educational School of Moscow University «Photonic and Quantum technologies. Digital medicine».\n\nhttps://events.sinp.msu.ru/event/8/co ntributions/207/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/207/ END:VEVENT BEGIN:VEVENT SUMMARY:Structure of heavy nuclei and nucleon-nucleon interaction DTSTART;VALUE=DATE-TIME:20220711T132000Z DTEND;VALUE=DATE-TIME:20220711T135500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-632@events.sinp.msu.ru DESCRIPTION:Speakers: Rostislav Jolos ()\nThe report considers:\n- phenome nological approaches to finding effective nucleon-nucleon\nforces for\n c alculations of nuclear structure\;\n- shell model calculations in large co nfiguration spaces\;\n- calculations of nuclei structure based on free\n nucleon-nucleon potential\;\n- Energy Density Functional approach\;\n- eff ective field theory for nucleon-nucleon\n interactions in the cores.\n\nh ttps://events.sinp.msu.ru/event/8/contributions/632/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/632/ END:VEVENT BEGIN:VEVENT SUMMARY:Relativistic runaway electron avalanche acceleration in complex th understorm electric structures DTSTART;VALUE=DATE-TIME:20220712T145000Z DTEND;VALUE=DATE-TIME:20220712T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-266@events.sinp.msu.ru DESCRIPTION:Speakers: Egor Stadnichuk (MIPT\, HSE University)\nThunderstor ms in the Earth’s atmosphere produce short and intense gamma-ray bursts [1]. Such bursts are called Terrestrial Gamma-ray Flashes (TGF). One of po ssible mechanisms of thunderstorm gamma-radiation – acceleration of Rela tivistic Runaway Electron Avalanches (RREA) in thunderstorm electric field s [2]. Gamma-rays are produced by relativistic electrons bremsstrahlung.\n RREAs are formed by secondary cosmic rays within thunderstorm media. In st rong electric fields RREAs are further multiplied by positive feedback mec hanisms\, which can lead to self-sustainable high-energy particles generat ion in thunderstorms (infinite feedback) [2\,3]. In complex thunderstorm e lectric structures RREAs are multiplied efficiently due to high-energy par ticles exchange (reactor feedback) between different electric regions (cel ls) [3].\nIn this research\, reactor feedback by runaway electron transpor t between cells is studied. It is shown that runaway electron propagation between cells with its further acceleration and multiplication plays an im portant role in the RREA dynamics. The conditions necessary for TGF by thi s mechanism are derived.\n\nhttps://events.sinp.msu.ru/event/8/contributio ns/266/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/266/ END:VEVENT BEGIN:VEVENT SUMMARY:COMPARATIVE ANALYSIS OF DOSIMETRIC PLANS WITH SIMULTANEOUS DOSE ES CALATION FOR PROSTATE TUMORS IN THE APPLICATION OF BIOLOGICAL AND PHYSICAL OPTIMIZATION FUNCTIONS DTSTART;VALUE=DATE-TIME:20220712T151000Z DTEND;VALUE=DATE-TIME:20220712T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-265@events.sinp.msu.ru DESCRIPTION:Speakers: Ekaterina Selikhova (Master's degree from National R esearch Tomsk Polytechnic University)\nPurpose of the work. a comparative analysis of radiation therapy (RT) plans with simultaneous dose escalation for prostate tumors in the application of biological and physical optimiz ation functions.\nResearch methods. In this research\, dosimetric plans wi th volumetric modulated arc therapy (VMAT) were developed for nine patient s diagnosed with prostate cancer in the Simultaneous integrated boost (SIB ) mode. RT was conducted in the following fractionation mode: the prescrib ed dose per course of radiotherapy for SIB was 75 Gy\, the number of fract ions was 25\, so that the single focal dose was 3 Gy for PTV1 (prostate re gion)\, 2.5 Gy for PTV2 (prostate and seminal vesicles) and 2 Gy for PTV3 (prostate\, seminal vesicles and regional lymph nodes) [1].\nDosimetric pl anning for SIB was performed in the Monaco environment (version 5.51.10) u sing VMAT. All the dosimetric irradiation plans had the same technical cal culation parameters. Several therapeutic plans with different optimization functions were created for comparative analysis: physical\; biological\; a combination of physical and biological optimization functions. The accep table level of prescribed dose was greater than 95% of the volume of each treatment site. A maximum dose of 107% of the prescribed dose was allowed for <2% of PTV1. Dose volume limits for OAR: for rectum: V74≤15%\; V69 ≤20%\; V64≤25%\; V59 ≤35%\; for bladder: V74≤25%\; V69≤35%\; V64 ≤50%\; for femoral heads: V45<10% [2]. \nResults. The dose distribution in the clinical target volume for all VMAT-SIB plans was in the range of a t least 95% of the prescribed dose covering at least 95% of the target vol ume. Radiation exposure levels to OAR did not exceed tolerated levels. A c omparison of dosimetric plans showed that the best optimization of the PTV 1 is achieved when only the physical functions are used. However\, OAR rec eive less dose when only biological optimization functions are used.\nConc lusion. The dose distribution results have shown that it is possible to cr eate clinically acceptable dosimetric plans when only biological or physic al optimization functions are used separately. Comparison of the obtained results shows that the most optimal dosimetric plan is achieved when using a combination of biological and physical optimization functions.\n\nhttps ://events.sinp.msu.ru/event/8/contributions/265/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/265/ END:VEVENT BEGIN:VEVENT SUMMARY:FOURTH GENERATION LIGHT SOURCE SKIF IN NOVOSIBIRSK: STATUS AND PER SPECTIVES DTSTART;VALUE=DATE-TIME:20220713T083000Z DTEND;VALUE=DATE-TIME:20220713T090500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-634@events.sinp.msu.ru DESCRIPTION:Speakers: Eugene Levichev (BINP SB RAS)\nSKIF is the Russian a cronym for Siberian Circular Light Source – a new fourth generation sync hrotron light facility that is now under development in Novosibirsk (Russi a). SKIF consists of 200 MeV linear accelerator-preinjector\, 3 GeV booste r synchrotron (154 m in circumference)\, 3 GeV electron storage ring (476 m) with extremely low natural horizontal emittance of 73 pm⋅rad and numb er of scientific and engineering infrastructures [1]. Fig.1 shows the SKIF buildings and premises with the main ring-shape building in the middle.\n \n \nFig. 1. General view of the SKIF light source facility.\n\nSKIF stora ge ring has 16-fold symmetry magnetic lattice with 16 6-m-long straight se ctions\; two sections are for RF system and injection others 14 will accom modate different insertion devices (including superconducting ones) delive ring high brightness X-rays to up to 30 experimental stations. First six s tations are under development now.\nHere we report status of the SKIF desi gn and manufacture including accelerator systems\, experimental stations\, engineering infrastructure and civil engineering.\n\n1. Baranov G.\, Bogo myagkov A.\, Levichev E.\, Morozov I. and Sinyatkin S. Phys. Rev. Accel. a nd Beams 24\, 120704 (2021).\n\nhttps://events.sinp.msu.ru/event/8/contrib utions/634/ LOCATION: Физичесий ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/634/ END:VEVENT BEGIN:VEVENT SUMMARY:Studies of double pion electroproduction with CLAS12 in kinematics with missing hadron DTSTART;VALUE=DATE-TIME:20220714T125000Z DTEND;VALUE=DATE-TIME:20220714T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-424@events.sinp.msu.ru DESCRIPTION:Speakers: Aleksandr Bulgakov (Moscow State University\, Physic s Department)\nExсlusive 𝑁𝜋 and 𝜋$^+$𝜋$^−$𝑝 electroprodu ction channels currently represent the major source of information on nucl eon resonance ($N^*$) electroexcitation amplitudes. Experiments with CLAS detector on exploration of 𝜋$^+$𝜋$^−$𝑝 electroproduction at Jef ferson lab with decisive contribution from Moscow State University group p rovided information on electroexcitation amplitudes of most excited states of the nucleon in the mass range up to 1.8 GeV. These results offer a uni que insight into many facets of strong interaction in non-perturbative reg ime which underlie the generation of different resonances with different s tructural features as the bound systems of quarks and gluons. [1\,2].\nFur ther extension of the efforts on exploration of 𝜋$^+$𝜋$^−$𝑝 ele ctroproduction with the new CLAS12 detector in the 12 GeV era of experimen ts at JLab will be presented in the talk. CLAS12 takes data using electron beams with energies up to 11 GeV which allows to probe the structure of n ucleon resonances at highest photon virtualities ($Q^2$) ever achieved up to 10 GeV$^2$. The event selection of the 𝑒𝑝 →𝑒′𝑝′𝜋$^ +$𝜋$^−$ channel measured in CLAS12 for the kinematics where one final hadron is missing will be presented. The plan for extraction of 𝜋$^+$ 𝜋$^−$𝑝 differential cross sections will be outlined.\n\n1. Carman D.S.\, Joo K.\, Mokeev V.I. et al. // Strong QCD Insights from Excited Nuc leon Structure Studies with CLAS and CLAS12\, Few Body Syst. (2020) 61\, 2 9.\n2. Brodsky S.J. et al. // Strong QCD from Hadron Structure Experiment s\, International Journal of Modern Physics E Vol. 29\, No. 08\, 2030006 ( 2020).\n\nhttps://events.sinp.msu.ru/event/8/contributions/424/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/424/ END:VEVENT BEGIN:VEVENT SUMMARY:Influence of neutron detector structural materials on fast neutron detection DTSTART;VALUE=DATE-TIME:20220713T122000Z DTEND;VALUE=DATE-TIME:20220713T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-267@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Karaevsky (INR RAS)\nSome nuclear reactions o n nuclei in neutron detector structural details even so as aluminium are i nduced with energy increasing. Nuclear reactions induced by neutrons betwe en 5 and 20 MeV energy are under consideration. They causes background eve nts in gaseous and scintillation detectors with $^3$He\, $^7$Li and $^10$B isotopes. The events and neatron scattering and nucleus activation distur bs measurement results\, leads to detector excitation without neutrons.\n Interaction of neutron with an energy of more than 5 MeV with aluminum\, silicon and oxygen nuclei as the main materials of new position-sensitive detector is considered. Interaction of neutron with converter nuclei: $^3$ He\, $^7$Li and $^10$B is considered also.\n\nhttps://events.sinp.msu.ru/e vent/8/contributions/267/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/267/ END:VEVENT BEGIN:VEVENT SUMMARY:PHOTONUCLEAR METHOD FOR THE PRODUCTION OF MEDICAL RADIOISOTOPE 72A S DTSTART;VALUE=DATE-TIME:20220715T122000Z DTEND;VALUE=DATE-TIME:20220715T123000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-351@events.sinp.msu.ru DESCRIPTION:Speakers: Fazilat Rasulova (Institute of Nuclear Physics of AS RUz)\nThe method of induced activity was used to study photonuclear react ions on a natural mixture of selenium isotopes. The experiment was perform ed on a bremsstrahlung of an RM-55 electron accelerator at an electron ene rgy of 55 MeV. The study examined the possibility of producing 72As isotop e in photonuclear reactions on a natural mixture of selenium isotopes. Exp erimental data on the cross-sections of photoproton reactions on Se isotop es are not available in the literature. The yields of the formation of 73\ ,74\,75\,76\,81\,81mSe isotopes as a result of natSe(γ\, in) reactions\, the target nuclide 72As and the side nuclides 71\,74\,76\,77\,78\,79As as a result of natSe(γ\, in1p) reactions were measured. The experimentally o btained yields of photonuclear reactions are compared with the yields calc ulated using theoretical cross-sections of photonuclear reactions from and the TALYS program.\n\nhttps://events.sinp.msu.ru/event/8/contributions/35 1/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/351/ END:VEVENT BEGIN:VEVENT SUMMARY:Some highlights of research on heavy ion collisions by ALICE at LH C DTSTART;VALUE=DATE-TIME:20220711T121000Z DTEND;VALUE=DATE-TIME:20220711T124500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-635@events.sinp.msu.ru DESCRIPTION:Speakers: Grigory Feofilov (Saint-Petersburg State University) \n...\n\nhttps://events.sinp.msu.ru/event/8/contributions/635/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/635/ END:VEVENT BEGIN:VEVENT SUMMARY:Preliminary data of the experiment to determine the cluster struct ure of the excited states of the 6Li DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-218@events.sinp.msu.ru DESCRIPTION:Speakers: Michael Mordovskoy (INR RAS)\nA test experiment to d etermine the cluster structure of the excited states of the 6Li nucleus in the n + 6Li reaction with registration of charged particles and neutrons in coincidence was carried out on the RADEX neutron channel of INR RAS. Ch arged particles were registered by a telescope of silicon ∆E-E detectors at an angle of 50º in a small vacuum scattering chamber with a mounted 6 Li2CO3 target [1]. Neutrons were registered by three scintillation detecto rs at an angle of 80º on the other side of the beam axis. Preliminary dat a on the energy spectra of neutrons and charged particles have been obtain ed. The obtained data make it possible to estimate the beam time required to obtain statistically reliable data for studying the cluster structure o f highly excited states of the 6Li nucleus.\n\n1. A. Kasparov\, M. Mordovs koy\, V. Mitcuk\, A. Afonin // “Nucleus-2021”\, Book of Abstracts\, 89 (2021).\n\nhttps://events.sinp.msu.ru/event/8/contributions/218/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/218/ END:VEVENT BEGIN:VEVENT SUMMARY:Software for Processing and analyzing data for detectors of the Me dipix family DTSTART;VALUE=DATE-TIME:20220715T074000Z DTEND;VALUE=DATE-TIME:20220715T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-219@events.sinp.msu.ru DESCRIPTION:Speakers: Aleksandr Lapkin (Joint Institute for Nuclear Resear ch)\nThis report describe the current stage of developing a new multi-ener gy X-ray tomograph\, which based on hybrid semiconductor pixel detector W idepix. The Widepix analyser software was written for processing the data of the detector during this work.\nThe Widepix detector is one of Medipix series detectors\, which are hybrid semiconductor pixel detectors develope d by the Medipix collaboration. They consist of two parts: a sensor and a readout chip. In sensor substance a hitting charged particle cause appeari ng of a signal. The signal is digitized and compared with adjustable thres hold in the pixels of the chip part. By this way\, Medipix series detector s are able to register radiation in different energy diapasons [1\, 2].\nT he developed software operates only with raw detector’s data. The softwa re provides possibilities to construct different types of spectra\, frames and distributions. It can make a lot of operations with the data like as flat field correction\, pixel filtering\, arithmetic operation with spectr a. The software is possible to calculate statistical parameters of frames data. The result of the program operations can be saved in different types of files.\n\nhttps://events.sinp.msu.ru/event/8/contributions/219/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/219/ END:VEVENT BEGIN:VEVENT SUMMARY:MAPbBr3-BASED RADIATION DETECTOR DTSTART;VALUE=DATE-TIME:20220715T080000Z DTEND;VALUE=DATE-TIME:20220715T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-419@events.sinp.msu.ru DESCRIPTION:Speakers: M. T. R. Zaitov ()\nRecently the opportunity of usi ng metalloorganic perovskites as a basic material for semiconductor detect ors of ionizing radiation was demonstrated [1]. Presence of lead atoms mak e possible appearance of small size devices intended for personal dosimetr y purposes. Crystal growing from solutions provides low cost of these devi ces [2]. Chlorine substituted methilammonium lead bromide perovskites MAPb Br3-xClx was investigated in 2017 [3]\, and it was demonstrated by authors that the ratio of chlorine to bromine atoms has an impact on the energy r esolution of MAPbBr3-xClx-based detectors. At the present time MAPbBr3-xCl x-based detectors becomes comparable by practical characteristics to wides pread stintillator-based detectors\, whereas pure MAPbBr3 doesn’t allow obtaining energy resolution at all. Such a behavior demands investigation of the influence of structural and topological defects on electric propert ies and band structure of metalloorganic semiconductors. Electrical transp ort properties may be investigated by dielectric spectroscopy\, which can provide information about impurity levels [4].\nThe purpose of this work w as to obtain MAPbBr3-xClx crystals by an original method\, to study their transport properties using impedance and optical spectroscopy\, to find ou t the possibility of their application in semiconductor detectors of ioniz ing radiation.\n\n1. S. Yakunin et al.\, Nat. Photon. 10\, 585 (2016).\n2. W. Haotong et al.\, Nat. Commun. 10\, 1066 (2019).\n3. H. Wei et al.\, Na t. Mater. 16\, 826 (2017).\n4. K. Jonsher et al.\, Semicond. Sci. Technol. 1\, 71 (1985).\n\nhttps://events.sinp.msu.ru/event/8/contributions/419/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/419/ END:VEVENT BEGIN:VEVENT SUMMARY:Performance for spectator symmetry plane estimation with the BM@N experiment DTSTART;VALUE=DATE-TIME:20220715T095000Z DTEND;VALUE=DATE-TIME:20220715T101000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-270@events.sinp.msu.ru DESCRIPTION:Speakers: Mikhail Mamaev (NRNU MEPhI)\nThe Baryonic Matter at Nuclotron experiment (BM@N) aims to study the area of QCD phase diagram at high net baryon densities and moderate temperatures with collisions of he avy ions at $\\sqrt{s_{NN}}$ = 2.3–3.5 GeV. Anisotropic transverse flow is one of the most important observable phenomena in a study of the proper ties of matter created in such collisions. Flow measurements require the k nowledge of collision symmetry plane\, which can be determined from deflec tion of collision spectators in the plane transverse to the direction of t he moving ions. \nBM@N performance for projectile spectator symmetry plane estimation is studied with Monte Carlo simulations using Xe+Cs collisions with beam energies of 4A GeV generated with the DCM-QGSM-SMM model. Inves tigated different data-driven methods to extract correction factor in flow analysis for the resolution of spectator symmetry plane estimated with th e BM@N Forward Hadron Calorimeter.\n\nhttps://events.sinp.msu.ru/event/8/c ontributions/270/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/270/ END:VEVENT BEGIN:VEVENT SUMMARY:RELATIVE PROBABILITY OF HIGH-SPIN ISOMERIC STATES POPULATION IN ( α\,n)-REACTIONS DTSTART;VALUE=DATE-TIME:20220714T140900Z DTEND;VALUE=DATE-TIME:20220714T142900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-272@events.sinp.msu.ru DESCRIPTION:Speakers: Tatjana Chuvilskaya (SINP MSU)\nExperiments which we re performed by use of the alpha-particle beam of SINP MSU cyclotron are t he subject of the present talk. Results of the investigations of the relat ive yield of high-spin and low-spin isomers in reactions 86Sr (α\,n)89Zr\ , 112Sn(α\,n)115Te\, 134Ba (α\,n)137Ce in the energy range of the alpha particles 15 – 31 MeV based on off-beam measurements of induced activity of members of the isomeric pair are presented. \nUniquely large isomeric cross-section ratios for the first and the second reactions are obtained. The features of the third reaction\, which are promising for its applicati on in fundamental research\, are revealed. The first of the reactions can also be used as an injection reaction for generating beams of high-spin is omers. \nQuality of the description of such reactions by popular computer codes is analyzed and some problems of these codes are detected.\n\nhttps: //events.sinp.msu.ru/event/8/contributions/272/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/272/ END:VEVENT BEGIN:VEVENT SUMMARY:ASSESSMENT OF THE EFFECT OF DISTORTION OF MAGNETIC RESONANCE IMAGI NG IMAGES ON THE PLANNING OF RADIATION THERAPY DTSTART;VALUE=DATE-TIME:20220714T130000Z DTEND;VALUE=DATE-TIME:20220714T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-652@events.sinp.msu.ru DESCRIPTION:Speakers: I. V. Myaekivi ()\nMRI images have been increasingly used in radiotherapy planning in recent years. They have better soft tissues contamination in comparison with CT scans. This is used effectivel y in the irradiation of soft tissue tumors and especially brain tumors. Ho wever\, geometric distortions have an impact on dose delivery accuracy whe n MRI is used in LT. MRI distortion is a particularly acute problem when p lanning stereotactic radiosurgery. In this case high dose (from 12 Gy) is delivered in 1-3 fractions with high accuracy of the beam hitting the targ et region. The aim of the present work is to measure distortions of MRI-im ages using a special phantom and subsequent quantitative assessment of the ir influence of distortion on stereotactic radiosurgery plan formation.\nC T scanning of the phantom was performed on a Phillips Brilliance iCT. The thickness of the slices was 1 mm and the resolution of the image was 0.5 mm.\nThe detected distortion is minimal in the central part of the magneti c field and increases significantly at the periphery of the examined phant om. The maximum displacement found is 3.1 mm and is located at 6.6 cm from the central axis of the phantom. At distances less than 5 cm from the cen ter\, the effect of distortion is not clinically significant and averages 0.01 cm.\nThe main conclusion of this work is that the measurement of dist ortion is essential to guarantee the accuracy of the planning process and further treatment of patients. It can be concluded from this study that fo r the practical application of MRI in radiotherapy planning\, special prot ocols for outlining structures on MRI images should be applied considering the distortion. Otherwise\, there is a possibility that covering the targ et with a dose will be unacceptable\n\nhttps://events.sinp.msu.ru/event/8/ contributions/652/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/652/ END:VEVENT BEGIN:VEVENT SUMMARY:SPATIAL DISTRIBUTION OF ATMOSPHERIC AEROSOL DEPOSITION MEASURED WI TH 7Be AS A TRACER AND MOSSES AS A SAMPLING MEDIUM DTSTART;VALUE=DATE-TIME:20220715T091000Z DTEND;VALUE=DATE-TIME:20220715T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-316@events.sinp.msu.ru DESCRIPTION:Speakers: Miodrag Krmar (Faculty of Science\, University Novi Sad)\nCosmogenic radionuclide 7Be is frequently used as an atmospheric tra cer. Air concentrations or deposition rate of 7Be are usually measured at limited number of locations equipped with air samplers or depositional col lectors. Mosses that do not have root system but receives and retains nutr ients from the atmosphere can be used as natural filters that provide very good spatial resolution of sampling. Deposition rate at some selected loc ation is governed by a number of factors\, among which the most important are meteorological conditions and the characteristics of the relief.\nThe spatial distribution of 7Be atmospheric deposition was measured once using terrestrial mosses on the territory of the Republic of Serbia [1]. In ord er to assess whether there are some areas with preferentially higher or lo wer atmospheric deposition\, a three-year project has been started. The mo ss samples will be periodically taken in the northern part of Serbia and 7 Be concentrations will be measured. \nIn the first campaign\, moss samplin g was performed at 70 locations in the northern part of Serbia. Dried samp les\, compressed into 200 ml plastic containers were measured in an anti-C ompton NaI detector adapted for this purpose to serve as a high efficiency well-counter. \nIn this work\, the results of the first sampling campaign are presented and compared with results of previous study. An analysis wa s made to establish to which extent the deposition patterns in two existin g measurements coincide. \n\n1. M. Krmar et al.\, Journal of Radioanaly tical and Nuclear Chemistry 318\, 1845 (2018)\n\nhttps://events.sinp.msu.r u/event/8/contributions/316/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/316/ END:VEVENT BEGIN:VEVENT SUMMARY:THE MEASUREMENT OF THE LOW LEVELS OF RADIOACTIVITY BY LIQUID SCINT ILLATION ALPHA AND BETA SPECTROMETER QUANTULUS 1220 DTSTART;VALUE=DATE-TIME:20220713T072000Z DTEND;VALUE=DATE-TIME:20220713T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-240@events.sinp.msu.ru DESCRIPTION:Speakers: Konstantin Gruzdov ()\nThe Quantulus 1220 is a liqui d scintillation counting (LSC) system for the quantitative measurement of extremely low levels of alpha and beta activity. With both passive and act ive shielding\, the Quantulus 1220 employs a universal background reductio n system which is optimized according to type of analysis.\nThe active shi elding is the asymmetric liquid scintillator guard. The active shielding i s used in anticoincidence with the analogue to digital converter (A/D conv erter). This means that if the guard registers a signal simultaneously wit h a coincidence signal in the detector the guard detector will inhibit the A/D conversion.\nIn the Centre of Isotopic Research (CIR) of FGBU "VSEGEI " Quantulus 1220 is used for radiocarbon (14C) dating of various organic o bjects (wood\, peat\, soil\, bottom sediments\, bones)\, dating young bott om sediments using 210Pb as well as determination the tritium content in w ater.\nThe minimum detectable concentration of tritium in water is approxi mately 1 Bq/L.\nThe obtained results are presented as the alpha and beta d ecay spectra of radioactive isotopes with calculations of the specific act ivities and radiocarbon ages.\n\nhttps://events.sinp.msu.ru/event/8/contri butions/240/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/240/ END:VEVENT BEGIN:VEVENT SUMMARY:Simulation of the proton beam facility at INR RAS using the TOPAS program DTSTART;VALUE=DATE-TIME:20220712T132000Z DTEND;VALUE=DATE-TIME:20220712T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-276@events.sinp.msu.ru DESCRIPTION:Speakers: Grigorii Merzlikin (MSU\, INR RAS)\nProton therapy i s currently attracting additional interest from specialists due to the pos sibility of using some proton accelerators in the FLASH mode with a dose r ate of more than 40 Gy/s. The FLASH effect opens up new advantages for rad iation therapy due to the predominant destruction of tumors. The proton be am facility at the INR of RAS makes it possible to achieve a record mean d ose rate for proton accelerators\, up to 106 Gy/s [1]. The calculation of the characteristics of a proton beam facility in extreme conditions is a n ecessary step in the experiments carried out on it. As is known\, the Mont e Carlo method is one of the most accurate and widespread methods for calc ulating the interactions of radiation with matter. Previously\, we compare d some options for using this method [2]. In this work\, the beam-forming system of the INR beam facility is modeled using the TOPAS software packag e. Among the features of this program\, one can single out the possibility of calculating the linear energy transfer (LET)\, which in proton therapy affects the relative biological effectiveness (RBE) of irradiation. Examp les of calculation of LET for a real modified Bragg peak and effective dos e for various models [3] of the dependence of RBE on LET are presented and compared with the absorbed dose D(z). \n1. Akulinichev\, S.V.\, et al. Po ssibilities of Proton FLASH Therapy on the Accelerator at the Russian Acad emy of Sciences’ Institute for Nuclear Research. Bull. Russ. Acad. Sci. Phys. 84\, 1325–1329 (2020).\n2. Grigorii V. Merzlikin \, Sergey V. Akul inichev\, Ivan A. Yakovlev\, Comparison of the results of calculations usi ng GEANT4 and SRNA\, https://doi.org/10.21175/rad.abstr.book.2021.36.5\n3. Paganetti et al.: TG-256 on the RBE of proton beams. Med. Phys. 46 (3)\, March 2019 0094-2405/2019/46(3)/e53/26.\n\nhttps://events.sinp.msu.ru/even t/8/contributions/276/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/276/ END:VEVENT BEGIN:VEVENT SUMMARY:Nuclear Structure across the energy scales from microscopic effect ive theories DTSTART;VALUE=DATE-TIME:20220711T141500Z DTEND;VALUE=DATE-TIME:20220711T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-637@events.sinp.msu.ru DESCRIPTION:Speakers: James P. Vary ()\nThe microscopic theory of atomic n uclei now spans energy scales from kilo-electron-volts to giga-electron-vo lts. The leading degrees of freedom for prominent experimental phenomena r ange from clusters or collective modes of nucleons to quarks and gluons. Many profound questions can be raised. Is there harmony across scales? Are there emergent phenomena at one scale that trace their origins to a highe r energy scale? Are there theoretical tools that are useful at more than o ne scale? Can one establish that theory retains predictive power? \n A t the highest energy scales accessible to current and planned laboratory e xperiments\, there is widespread agreement that atomic nuclei should be we ll-described by the Standard Model of Elementary Particles. How can we ac hieve this? I will present Basis Light Front Quantization1 as a relativist ic Hamiltonian approach for quarks and gluons that is complementary to Lat tice QCD and capable of describing nuclear phenomena using supercomputer s imulations. The first goal of successfully describing mesons and nucleons is progressing rapidly and phenomena such as chiral symmetry breaking are becoming better understood2. Near-term goals include the properties of exo tic baryonic systems and properties of the pion-nucleon and nucleon-nucleo n interactions.\n At the lower energy scales\, Chiral Effective Field Theory (χEFT)3\,4 has emerged as the systematic and controllable embodime nt of QCD below the chiral symmetry breaking scale. Can we discover collec tive nuclear phenomena emerging from treating all nucleons on an equal foo ting? I will present recent results from the ab initio No-Core Shell Model (NCSM)5 with χEFT interactions showing promising agreement between theor y and experiment6 within well-quantified theoretical uncertainties. Exotic phenomena such as alpha clustering7 and predictions of a tetraneutron res onance8 serve as example highlights.\n\n1. J.P. Vary\, et al.\, “Hamilto nian light-front field theory in a basis function approach”\, \nPhys. Re v. C 81\, 035205 (2010)\n2. Y. Li and J.P. Vary\, “Light-front holograph y with chiral symmetry breaking\,” \nPhys. Letts. B 825\, 136860 (2022)\ n3. R. Machleidt and D.R. Entem\, “Chiral effective field theory and nuc lear forces\,” \nPhys. Rep. 503\, 1 (2011)\n4. E. Epelbaum\, H.-W. Hamme r and Ulf.-G. Meißner\, “Modern theory of nuclear forces\,” Rev. Mod. Phys. 81\, 1773 (2009).\n5. B.R. Barrett\, et al.\, “Ab Initio No Core Shell Model\,” Prog. Part. Nucl. Phys. 69\, 131 (2013)\n6. P. Maris\, et al.\, “Light nuclei with semilocal momentum-space regularized chiral in teractions up to third order\,” Phys. Rev. C 103\, 054001 (2021)\n7. T. Otsuka\, et al.\, “Alpha-Clustering in Atomic Nuclei from First Principl es with Statistical Learning and the Hoyle State Character\,” Nature Com munications 13:2234 (2022)\n8. A.M. Shirokov\, et al.\, “Prediction for a four-neutron resonance\,” \nPhys. Rev. Letts. 117\, 182502 (2016)\n\nh ttps://events.sinp.msu.ru/event/8/contributions/637/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/637/ END:VEVENT BEGIN:VEVENT SUMMARY:Evaluation of impact of injected activity of 18F-FDG on the PET im age quality DTSTART;VALUE=DATE-TIME:20220714T122000Z DTEND;VALUE=DATE-TIME:20220714T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-278@events.sinp.msu.ru DESCRIPTION:Speakers: Anastasia Petryakova (Peter the Great St. Petersburg Polytechnic University\, Saint Petersburg\, Russia)\nPositron emission to mography (PET) is a modern radionuclide method of medical imaging which al lows to quantitative estimate of radiopharmaceuticals distribution in vivo . PET is based on the injection of radiopharmaceuticals labeled with ultra short-lived positron-emitted radionuclides.\nImage quality in PET depends on physical characteristics of radionuclide\, technique parameters of scan ner\, acquisition protocol and reconstruction algorithm. Injected activity is one of the main examination parameters. It should guarantee good image quality and provide low patient dose. In order to determine the optimal a ctivity of radiopharmaceutical\, several factors should be considered: pat ient related factors (weight\, body mass)\, and scanner related factors (d etector material\, acquisition mode\, acquisition time per bed) [1].\nQual ity control (QC) of PET images of the patients could be based on the quant itative parameters [2] or image evaluation by the expert. The aim of this study was to perform QC of the PET images of the patients obtained with di fferent PET injected activity.\nThe study was based on the different PET/C T units with different practice and protocol parameters. Fifteen series of PET images of the patients were collected from three PET/CT scanners (Sie mens Biograph mCT 128). All patients underwent PET/CT study with 18F-FDG. Injected activity of 18F-FDG was 100 MBq per body surface area (BSA) on 1s t scanner (2.5 min per bed)\; 110 MBq per BSA on 2nd scanner (2.3 min)\; 1 30 MBq per BSA on 3rd scanner (1 min). For all scanners the distributions of patient BSA were the same (Kruskal-Wallis: p=0.5).\nBoth methods demons trated the same quality level for each PET/CT scanner. It means that decre ase of injected activity in general and increase time per bed lead to redu ce patient dose without loss of image quality. At the same time\, increase of injected activity and decrease of time per bed lead to comparable qual ity.\nIn that case\, in process of optimization of PET examination protoco ls it is necessary to consider relations between examination parameters.\n \n1. IAEA. Standard Operating Procedures for PET/CT: A Practical Approach for Use in Adult Oncology (2013)\n2. A.V. Petryakova\, L.A. Chipiga\, A.A. Ivanova\, M.S. Tlostanova\, A.A. Stanzhevsky\, G.M. Mitusova. Comparison of Image Quality Control Methods in Positron Emission Tomography\, Med. Ph ys\, 62-73\, 88 (2020)\n\nhttps://events.sinp.msu.ru/event/8/contributions /278/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/278/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF TIKHONOV REGULARIZATION IN SPECTRA RECONSTRUCTION DTSTART;VALUE=DATE-TIME:20220715T101000Z DTEND;VALUE=DATE-TIME:20220715T103000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-247@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Nikitchenko (Lomonosov Moscow State Univer sity)\nThe electron energy spectrum is one of the important parameters in electron beam radiation treatment planning for accurate calculation of the dose-volume distribution of the irradiated object. Existing methods such as Monte-Carlo modeling of the radiation source and radiation geometry and direct measurement of the energy spectrum using special equipment are tim e consuming and expensive\, respectively. The most universal method is the indirect method based on the reconstruction electron beam spectrum from e xperimentally measured data.\nIn this work\, the authors reconstructed ele ctron energy spectra from the depth dose distributions in aluminum using t he standard least squares method\, supplemented with Tikhonov's regulariza tion. As the reference spectra for estimating the reconstruction accuracy the spectra of the UELR-10-15S accelerator for four different operating mo des with maximum energies of 5 MeV\, 6.5 MeV\, 8 MeV\, and 10 MeV have bee n selected.\nThe aim of the work was to study the influence of different t ypes of Tikhonov regularization parameters calculated with the absolute an d relative correction methods\, the quasi-optimal method and the residual method [1-3]\, on the accuracy of reconstructing the electron beam spectra from the depth dose distributions in aluminum.\nThe accuracy of reconstru cted with Tikhonov's regularization the electron spectra from depth dose d istributions was established depending on the choice of the regularization parameter\, as well as the energy mode of the accelerator and the experim ental error in measuring depth dose distributions. \nIt was found that the error in the reconstruction of the spectra in the case of the regularizat ion parameter calculated with the residual method is on average 10% lower compared to other methods.\nIt was also shown that the accuracy of the rec onstruction of depth dose distributions from the reconstructed energy spec tra is about 85–95%\, depending on the maximum energy of the electron be am of the accelerator and the choice of the regularization parameter.\n\n1 . L.L. Garth\, M.V. Manoilo\, System Res. and Inf. Tech. № 1\, 99-110 (2 015).\n2. A.S. Leonov\, Sib. math. J. 34\, № 4\, 117-126 (1993).\n3. V.A . Morozov\, Comp. Math. and Math. Phys. 8\, № 2\, 295-309 (1968).\n\nhtt ps://events.sinp.msu.ru/event/8/contributions/247/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/247/ END:VEVENT BEGIN:VEVENT SUMMARY:TalysLib: a ROOT-based toolkit for nuclear data access DTSTART;VALUE=DATE-TIME:20220712T145000Z DTEND;VALUE=DATE-TIME:20220712T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-280@events.sinp.msu.ru DESCRIPTION:Speakers: Nikita Fedorov (JINR)\nInformation about nuclear rea ctions and properties of nuclei is often needed during nuclear data proces sing. Access to the nuclear databases from applied software is often diffi cult because of complex file format or database structure. To simplify usa ge of the nuclear data a specific toolkit TalysLib was developed. \nTalysL ib is a ROOT-based C++ object-oriented library. It uses wide capabilities of ROOT [1] for data visualization and transformations. The main source of the evaluated data for TalysLib is the TALYS [2] program. Information abo ut nuclear structure is extracted from RIPL-3 [3]. Work on the ENDF [4] d ata and preprocessed EXFOR data [5] support is in process. \nTalysLib can be used for optimization of the theoretical model parameters using MINUIT package which is included in ROOT.\nThe structure of the TalysLib and its main features will be presented. Current version of the TalysLib is availa ble on https://github.com/terawatt93/TalysLib. \n\n1. R. Brun\, F. Rademak ers. Nucl. Inst. & Meth. in Phys. Res. A 389 (1997) 81-86.\n2. A. J. Konin g\, S. Hilaire\, M. C. Duijvestijn «TALYS-1.0»\, Proceedings of the Int ernational Conference on Nuclear Data for Science and Technology. EDP Scie nces\, 211(2007).\n3. R. Capote\, M. Herman\, P. Oblozinsky et al. Nuclear Data Sheets. 110\, 3107(2009).\n4. D.A. Brown\, M.B. Chadwick\, R. Capote et al. Nucl. Data Sheets 148\, 1(2018).\n5. A. Koning. IAEA NDS Document Series IAEA(NDS)-235 (2020). https://www-nds.iaea.org/talys/tutorials/exfo rtables.pdf\n\nhttps://events.sinp.msu.ru/event/8/contributions/280/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/280/ END:VEVENT BEGIN:VEVENT SUMMARY:INTERACTION OF SERUM ALBUMIN AND GRAPHENE OXIDE: INVESTIGATION BY TRITIUM PROBE AND MOLECULAR DOCKING DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-295@events.sinp.msu.ru DESCRIPTION:Speakers: Vitalii Bunyaev (Moscow State University\, Radiochem istry Department of Chemistry Faculty)\nGraphene oxide (GO) modification w ith different compounds for synthesis of new materials with specified prop erties is the field of interest of modern investigation [1]. Since serum a lbumin is the main blood protein\, it is important to understand the mecha nisms of its interaction with medical materials. In present work we propos e a novel complex approach of studying interactions between bovine serum a lbumin (BSA) and GO. The approach includes tritium probe method and comput er simulation.\nTritium probe method is based on the application of tritiu m labeled compounds for the to determine the composition of composite mate rials\, as well as to determine the structural organization of protein mol ecules on the surface of a solid substrate [2].\nBSA was adsorbed on the s olid of an aqueous suspension of GO. The composition of such prepared mate rial was determined with the help of tritium labeled protein. We observed that BSA strongly adsorbs on GO. To reveal the structural peculiarities of protein on GO surface\, the adsorption composite was subjected to bombard ment with atomic tritium following by analysis of label distribution in th e amino acid residues. Tritium atoms were formed from molecular tritium on the tungsten filament heated by the electric current up to 1830 K.\nThe e xperimental results were compared with molecular docking simulation. Molec ular docking was performed using AutoDock Vina 1.2.3\, LeDock and Hex8.0.0 softwires. Preliminary preparation of the carbon substrate model\, minimi zation of the free energy of GO structure\, as well as preparation of prot ein files for calculation were carried out using ChemBioDraw/3D Ultra 11.0 .2.\, UCSF Chimera 1.15 respectively. The molecular modeling was performed tooking into account the presence of structural defects in GO\, the hydra te shell on the surface of the nanocarbon substrate\, as well as the forma tion of a "protein corona" due to protein-protein interactions.\nAs a resu lt\, we determined the composition of BSA-GO adsorption composites in the wide range of protein concentrations. Moreover\, binding sites of BSA and GO have been identified\, and the important role of histidine in protein r etention on the GO surface will be discussed in the presentation.\n\n1. Gu sarova E.A. et al.\, Colloid and Interface Science Communications. 46\, 10 0575 (2022).\n2. Chernysheva M.G. et al.\, Radiochemistry. 63(2)\, 227 (20 21).\n\nhttps://events.sinp.msu.ru/event/8/contributions/295/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/295/ END:VEVENT BEGIN:VEVENT SUMMARY:INCREASING IRRADIATION UNIFORMITY AT INDUSTRIAL ELECTRON ACCELERAT ORS DTSTART;VALUE=DATE-TIME:20220715T103000Z DTEND;VALUE=DATE-TIME:20220715T105000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-311@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Zolotov (Faculty of Physics M.V.Lomonosov Mos cow State University)\nThese days radiation treatment of objects and mater ials has been increasingly used in various areas of the national economy. For a number of categories of objects narrow radiation dose ranges are pre scribed. Exceeding the upper limits of this range has a negative effect on physical and chemical properties of the object. Going beyond the lower li mits does not reach the desired treatment objective. Therefore\, it’s im portant to ensure the best possible dose distribution homogeneity over the entire volume of the object. An increase in the uniformity of irradiation is achieved by placing aluminium plates between electron accelerator exit window and the irradiated object [1]. The presence of the plates modifies the electron beam spectrum by blurring the peak of the initial electron s pectrum towards lower values. Thus\, the dose in the surface layers increa ses\, resulting in a greater irradiation uniformity. But at the same time the limiting size of objects that can be treated decreases.\n In this work we propose a method of increasing irradiation uniformity based on placing a combination of aluminum modifier plates of different thicknesses at the electrons beam way during radiation treatment. Methods like this are used in proton radiation therapy to form a modified Bragg peak of a given thic kness at a given depth [2]. The key task is to determine absorbed dose dis tributions weights in such a way that the superposition of dose distributi ons is as close as possible to the desired form. In other words\, ∑_(j=1 )^M▒(∑_(i=1)^N▒〖ω_i D(x_j\,d_i ) 〗-D ^(x_j ))^2 →Min\, where D(x_j\,d_i ) - is the absorbed dose generated at point of x_j depth when u sing a d_i thickness modifier\, ω_i - weight coefficients\, of the dose d istributions in the presence of the plate d_i \, D ^(x_j ) - the desired d ose at point xj . The summation is performed on i from 1 to N\, where N is the number of different thickness modifiers and on j from 1 to M\, where M is the number of points at which the absorbed dose is determined.\nIn th is work\, the absorbed dose distributions over the depth of cubic water ph antoms with a depth up to 155 mm during one-sided irradiation with monoene rgetic electrons with energies 1 - 10 MeV were obtained by computer simula tion using the Geant4 toolkit. Aluminum plates with the thickness of 0 - 6 mm were placed in the beam path.\n Based on the results of the work for e ach phantom\, weighting coefficients were selected by using the non-negati ve least squares method [3] to obtain combinations of dose distributions t hat provide maximum possible radiation treatment homogeneity.\n The resear ch was supported by the interdisciplinary scientific and educational schoo l of the Moscow University "Photonic and Quantum Technologies. Digital Med icine".\n\nhttps://events.sinp.msu.ru/event/8/contributions/311/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/311/ END:VEVENT BEGIN:VEVENT SUMMARY:Opening DTSTART;VALUE=DATE-TIME:20220711T070000Z DTEND;VALUE=DATE-TIME:20220711T073000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-638@events.sinp.msu.ru DESCRIPTION:https://events.sinp.msu.ru/event/8/contributions/638/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/638/ END:VEVENT BEGIN:VEVENT SUMMARY:Generalization of theory of finite fermi-systems for pygmy- and gi ant multipole resonances DTSTART;VALUE=DATE-TIME:20220714T120000Z DTEND;VALUE=DATE-TIME:20220714T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-281@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Kamerdzhiev (NRC "Kurchatov Institute")\nThe generalized equation for the main notion of the self-consistent theory of finite Fermi-systems (TFFS) [1\,2] effective field ( vertex) $\\tilde V$ \, which describes nuclear polarizability\, has been derived for the case of consistent accounting for phonon coupling (PC) in the energy region of pygmy-and giant resonances (GDR \, GMR) in magic nuclei [3\,4]:\n \nFigur e 1. F – effective interaction\, $Γ^r$ – regular part of the full in teraction amplitude Γ [1]\, circles and wavy lines – phonons. The known terms are from the first to the fourth from the right\, the new ones are all the others. All terms with δF are omitted.\n\nThe formulae for observ able characteristics of these resonances have been obtained. New PC effect s have been found and discussed: 1) numerous three-and four correlations i n the ground state\, 2) various induced interactions caused by the exchang e of phonon\, 3) (for the first time in TFFS) two-phonon configurations\, 4) dynamic effects of tadpole\, 5) the first and second variations of the effective interaction δF in the phonon field. These effects should have m any manifestations\, in particular\, for the description of the fine struc tures of PDR and GMR. Most of these effects should give a noticeable numer ical contribution. Self-consistency gives a great predictive strength of t he theory\, which is necessary for unstable nuclei\, astrophysics and nucl ear data.\n1.A.B. Migdal\, Theory of Finite Fermi Systems and Properties o f Atomic Nuclei\n(second edition)\, Nauka\, Moscow\, (1983).\n2. V.A. Khod el\, E.E.Saperstein\, Phys.Rep. 92\, 183 (1982) .\n3. S.P.Kamerdzhiev\, M. I. Shitov\, EPJA \, 56\, 265 (2020).\n4. S.P. Kamerdzhiev\, M.I. Shitov\, Phys. At. Nucl. 84\, 649 (2021).\n\nhttps://events.sinp.msu.ru/event/8/co ntributions/281/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/281/ END:VEVENT BEGIN:VEVENT SUMMARY:COMPTON GAMMA-RAY SOURCE BASED ON 500 MEV ELECTRON ACCELERATOR: UN IQUE PARAMETERS AND POSSIBLE APPLICATIONS DTSTART;VALUE=DATE-TIME:20220715T070000Z DTEND;VALUE=DATE-TIME:20220715T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-200@events.sinp.msu.ru DESCRIPTION:Speakers: Aleksander Kuznetsov (Skobeltsyn Institute of Nuclea r Physics\, Lomonosov Moscow State University\, Russia\; Faculty of Physic s\, Lomonosov Moscow State University\, Russia)\nThe perspectives and the program of experimental research in the field of nuclear physics on the pr ojected source of monoenergetic gamma-quanta based on the Compton backscat tering effect of laser radiation from a linear electron accelerator with a n energy of 500 MeV are discussed. It is planned to create a facility with a high-intensity beam of monoenergetic gamma-quanta with energies from a few to 30 MeV. \nThe outstanding parameters of the facility\, primarily in terms of monochromatization and beam intensity\, will make it possible to obtain new unique data in the field of the structure of atomic nuclei\, t he physics of photonuclear reactions\, including the photofission reaction \, and will make it possible to implement methods of both direct measureme nts and induced activity at a qualitatively new level. New data obtained u sing monoenergetic photons will make it possible to obtain new reliable in formation about a number of fundamental problems of electromagnetic intera ctions of atomic nuclei\, primarily\, such as the collective modes of nucl ear excitations\, the relationship between various decay channels of highl y excited states of nuclei\, the mechanisms of reactions with the emission of various the number of nucleons. The main problems that will be studied at the facility are the structure of the giant dipole resonance (GDR)\, t he parameters of nuclear deformation\, and the characteristics of such GDR formation processes as isospin and configurational splitting of the GDR. The implementation of the induced activity method with the beam parameters that are planned to be achieved will make it possible to obtain data on t he cross sections of partial photoneutron reactions with high accuracy and reliability and solve the long-standing and well-known problem of signifi cant discrepancies in the results of different photonuclear experiments. \ nThe unique parameters of the gamma-quantum beam at the facility will also make it possible to advance significantly in the field of research in nuc lear astrophysics. For the first time\, it will be possible to measure the cross sections of photonuclear reactions in the region of the correspondi ng energy thresholds on bypassed nuclei\, which are necessary for studying the currently unresolved scientific problem of the origin of such nuclei. A separate program of research on the projected gamma-radiation source wi ll be devoted to the study of nuclear photofission. Using a beam of quasi- monoenergetic photons with high resolution\, mass\, charge\, and energy de pendences of photofission fragments corresponding to decays of well-define d excited states in different minima between fission barriers will be stud ied.\n\nhttps://events.sinp.msu.ru/event/8/contributions/200/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/200/ END:VEVENT BEGIN:VEVENT SUMMARY:Contacts for self-scanning SiC energyconverters in nano-microwatts range DTSTART;VALUE=DATE-TIME:20220712T070000Z DTEND;VALUE=DATE-TIME:20220712T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-282@events.sinp.msu.ru DESCRIPTION:Speakers: Mikhail DOLGOPOLOV (Samara University)\nThe authors investigate the beta-electrons energy conversion into electrical energy in side 3C-SiC*/Si heterostructures doped with carbon-14 [1]\, which acts as an internal source of primary electrons spectrum and as the radioisotope n uclear energy accumulator. The question is raised in connection with the d escription of the endotaxy effectivness at the structural level\, which me ans the growth of the doped single-crystal film inheriting the crystallogr aphic orientation of the transformed Si-phase. The analysis of the technol ogical aspects of the formation by endotaxy of high-temperature stable and radiation resistant β-SiC/Si heterostructure with respect to the concent ration distribution of point defects of various nature\, deep centers [2] and their probable association models with the participation of an impurit y is the main way to increase the physical sensors reliability. The analys is of reversible association processes opens up ways to optimize the kinet ics of diffusion mass transfer and microalloying during the phase transfor mation of silicon substrate into the silicon carbide film [3]. The depende nces of the neutral defects concentrations on the factors of supersaturati on of the gas phase by the conditional atomic concentration of carbon\, on the concentration of impurities in the gas phase\, as well as on their ow n defects of various nature\, have the potential for the formation of deep levels in the forbidden zone and the potential for association [3]. The e fficiency of the created structures depends on the combination of radionuc lide activity and the formation of the contact area\, which is confirmed b y the beta spectrum research by the authors.\nThe dependence of the carrie r generation efficiency on the activity or the introduced concentration of the radioisotope in the crystal lattice\, taking into account the phase f ormation is evaluated. It is important to evaluate the possibility of stru ctures metallization in order to collect nonequilibrium charge carriers ta king into account changes in the work function. At this stage chips of str uctures with the size from 1x1 mm are used. At the same time\, it is impor tant to investigate the degree of influence of boundary effects. Research in the framework of this work also includes consideration of the band stru ctures of the device\, since there is an understanding of the alloying eff ect impurities with radionuclide on the position of energy levels in the b and structure.\n\n1. A. V. Gurskaya\, M. V. Dolgopolov\, V. I. Chepurnov\, Physics of Particles and Nuclei. 48\, 941 (2017).\n2. A. V. Gurskaya etc. J. of Physics: Conf. Series. 1686\, 012040 (2020).\n3. V. I. Chepurnov Ve stnik Samarskogo Gosudarstvennogo Universiteta. Estestvenno-Nauchnaya Seri ya. 7(118)\, 145 (2014)\n\nhttps://events.sinp.msu.ru/event/8/contribution s/282/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/282/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF THE BETA DECAY STRENGTH FUNCTION STUCTURE BY TAGS AND HIG H RESOLUTION NUCLEAR SPECTROSCOPY METHODS DTSTART;VALUE=DATE-TIME:20220714T100000Z DTEND;VALUE=DATE-TIME:20220714T103000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-602@events.sinp.msu.ru DESCRIPTION:Speakers: Igor Izosimov (JINR)\nThe $\\beta$-decay strength fu nction $S_{\\beta}(\\textit{E})$ governs [1-3] the nuclear energy $\\texti t{E}$ distribution of elementary charge-exchange excitations and their com binations like proton particle $({\\pi}p)$-neutron hole $({\\nu}h)$ couple d into a spin-parity $I^{\\pi}$: $[{\\pi}p \\otimes {\\nu}h]I^{\\pi}$ and neutron particle $({\\nu}p)$-proton hole $({\\pi}h)$ coupled into a spin- parity $I^{\\pi}: [{\\nu}p \\otimes {\\pi}h]I^{\\pi}$. The strength functi on for the Gamow–Teller ($GT$) $\\beta$-transitions describes $[{\\pi}p \\otimes {\\nu}h]1^{+}$ or $[{\\nu}p \\otimes {\\pi}h]1^{+}$ excitations. Successful applications of the total absorption $\\gamma$-spectroscopy ($T AGS$) for the $S_{\\beta}(\\textit{E})$ resonance structure study and me thods of $TAGS$ spectra analysis were summarized in [1]. Development of th e experimental technique allows application of methods of nuclear spectros copy with high energy resolution for the $S_{\\beta}(\\textit{E})$ fine structure measurement [2-5]. It was demonstrated [2-6] that the high-resol ution nuclear spectroscopy methods give conclusive evidence of the resonan ce structure of $S_{\\beta}(\\textit{E})$ for $GT$ and First Forbidden ($F F$) $\\beta$-transitions. High-resolution nuclear spectroscopy methods [3- 6] made it possible to observe the reveal splitting of the peak in the $S_ {\\beta}(\\textit{E})$ for the $GT$ $\\beta^{+}/EC$-decay of the deformed nuclei into two components. Resonance structure of the $ S_{\\beta}(\\text it{E}) $ for $\\beta$-decay of halo nuclei was analyzed in [7-9]. It was s hown that when the parent nucleus has $\\textit{nn}$ Borromean halo struct ure\, then after $GT$ $\\beta^{-}$ - decay of parent state or after M1 $\\ gamma$-decay of Isobar Analogue Resonance ($IAR$) the states with $\\texti t{np}$ tango halo structure or mixed $\\textit{np}$ tango + $\\textit{nn}$ Borromean halo structure can be populated.\nIn this report the fine struc ture of $S_{\\beta}(\\textit{E})$ is analysed. Resonance structure of $S_ {\\beta}(\\textit{E})$ for the $GT$ and $FF$ $\\beta^{-}$ – decays\, s tructure of $S_{\\beta}(\\textit{E})$ for halo nuclei\, quenching [9] of t he weak axial-vector constant ${{g_{A}}^{eff}}$\, and splitting of the pea ks in $S_{\\beta}(\\textit{E})$ for deformed nuclei connected with the ani sotropy of oscillations of proton holes against neutrons (peaks in $S_{\\b eta}(\\textit{E})$ of $GT$ $\\beta^{+}/EC$–decay) or of protons against neutron holes (peaks in $S_{\\beta}(\\textit{E})$ of $GT$ $\\beta^{-}$ – decay) are discussed.\n\n\n1. Yu.V. Naumov\, A.A. Bykov\, I.N. Izosimo v\, Sov. J. Part. Nucl.\, 14\,175 (1983). https://www.researchgate.net/pu blication/233832321\n2. I.N. Izosimov\, Physics of Particles and Nuclei\, 30\, 131 (1999). https://www.researchgate.net/publication/259820759\n3. I. N. Izosimov\, et al\, Phys. Part. Nucl.\, 42\,1804(2011). DOI:10.1134/S106 3779611060049\n4. I.N. Izosimov\, et al\, Phys. At. Nucl.\, 75\,1324(2012) . DOI: 10.1134/S1063778812110099\n5. I.N. Izosimov\, et al\,Phys.Part.Nucl .Lett.\,15\,298(2018). DOI:10.1134/S1547477118030081\n6. I.N. Izosimov\, e t al\, JPS Conf. Proc.\, 23\,013004 (2018). DOI: 10.7566/JPSCP.23.013004\n 7. I.N. Izosimov\, JPS Conf. Proc.\, 23\,013005 (2018). DOI: 10.7566/JPSCP .23.013005\n8. I.N. Izosimov\, Phys. Part. Nucl. Lett.\, 15\,621(2018). DO I:10.1134/S1547477118060092\n\nhttps://events.sinp.msu.ru/event/8/contribu tions/602/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/602/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of cumulative processes in correlation with strangeness and charm production in hadronic collisions at SPS and NICA energies. DTSTART;VALUE=DATE-TIME:20220715T070000Z DTEND;VALUE=DATE-TIME:20220715T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-284@events.sinp.msu.ru DESCRIPTION:Speakers: Semyon Yurchenko (Saint Petersburg State University) \nSTUDY OF CUMULATIVE PROCESSES IN CORRELATION WITH STRANGENESS AND CHARM PRODUCTION IN HADRONIC COLLISIONS AT SPS AND NICA ENERGIES.\nS.V. Yurchenk o\, A.A. Marova\, G.A. Feofilov\nSaint Petersburg State University\, Saint Petersburg\, Russia\;\nE-mail: st098136@student.spbu.ru\n New mechanism [ 1\,2] of strangeness and charm production was proposed in high energy hadr onic collisions in association with the cumulative particle formation on t he flucton. The concept of flucton [3]. - a “droplet” of dense cold nu clear matter\, that might be formed in the target nucleus\, was motivated by several observations [4-6] of particle production in a so-called kinema tically forbidden\, in reaction with free nucleons\, region. The novel app roach [1\,2] is based on the joint consideration of the flucton and the re levant formation of strongly overlapping quark-gluon strings. In the last case\, the fusion of quark-gluon strings might be responsible for the incr eased yields of particles containing strange or charm quarks. The first re sults of studies of possibilities for experimental observations of cumulat ive particles production that could correlate with strangeness and charm y ields\, were presented earlier in [7].\n In our report we discuss the conc ept of new\, compact detector we propose for registration of cumulative pa rticles as a trigger for studies of correlation with strangeness and charm in the fixed-target experiments at SPS and NICA. We discuss\, with the ac count of cumulative particle yield analysis [8]\, the estimations of stran ge and cumulative particle yields\, selection of the kinematical regions a nd some preliminary conclusions about the structure of this compact detect or using the Geant4 simulations.\n\nAcknowledgements. This research has be en conducted with financial support from St. Petersburg State University ( project No 93025435).\nReferences:\n1. V. Vechernin\, in materials of the IVth Rissian-Spanish\nCongress:Particle\, Nuclear\, Astroparticle Physics and Cosmology\, 4-8 September 2017\, JINR\, Dubna (Russia)\, http://refhub .elsevier.com/S0168-9002(20)31065-2/sb3\n2. V.V. Vechernin\, Physics of Pa rticles and Nuclei 52 (4) 604-608 (2021)\n3. Blokhintsev D.I.\, JETP 33 (1 957) 1295.\n4. G.A. Leksin et al.\, ZhETF 32\, 445 (1957)\n5. L.S. Azhgire j et al.\, ZhETF 33\, 1185 (1957)\n6. Yu.D.Bayukov et al.\, Izv. AN SSSR 3 0\, 521 (1966)\n7. T.V.Lazareva et al.\, Bull.Russ.Acad.Sci. Physics\, 83( 9)\, 1155-1160. (2019). \n8. M. A. Braun and V. V. Vechernin\, Theor. Math . Phys. 139 (2004)\, 766-786\n\nhttps://events.sinp.msu.ru/event/8/contrib utions/284/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/284/ END:VEVENT BEGIN:VEVENT SUMMARY:Photoneutron Cross Sections Of Cobalt DTSTART;VALUE=DATE-TIME:20220713T130500Z DTEND;VALUE=DATE-TIME:20220713T132500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-262@events.sinp.msu.ru DESCRIPTION:Speakers: Alexandra Druzhinina (Lomonosov Moscow State univers ity\, Faculty of Physics)\n**PHOTONEUTRON CROSS SECTIONS OF COBALT**\n\nA. V. Druzhinina$^{1}$\, S. S. Belyshev$^{1\,2}$\, V. V. Khankin$^{2}$\, A. A. Kuznetsov$^{1\,2}$ \n*$^{1}$Lomonosov Moscow State University\, Moscow\ , Russia\; $^{2}$Skobeltsyn Institute of Nuclear Physics\, Lomonosov Mosco w State University\, Moscow\, Russia* \n E-mail: alexdruzhinina@gmail.com\ n\nFrom measurements of gamma ray activities\, induced by irradiating $^{5 9}$Co with 55 MeV bremsstrahlung\, the yields of the reactions (γ\,n)\, ( γ\,2n)\, (γ\,3n)\, (γ\,2pn) were determined. Absolute yields were obtai ned by reference to cross section data for the Cu(γ\,n) process. The isom eric yield ratio (Ym/Yg) of $^{58}$Co\, which was measured at this energy\ , is 1.255±0.004. This value is in a good agreement with previous experim ental data\, such as 1.33±0.09 at the maximum beam energy equel 54 MeV [1 ].\nThe flux-weighted average cross-sections for the (γ\,n)\, (γ\,2n) re actions of $^{59}$Co are 18.53±0.03\, 6.99±0.04 mb\, respectively. They were compared with the flux-weighted average cross-sections obtained from other experimental data\, based on mono-energetic and bremsstrahlung data\ , and theoretical predictions. These results of current experiment are low er then results\, obtained by Alvarez [2] for (γ\,n) reaction\, and highe r for (γ\,2n) reaction\, which are 22.6 mb and 6.19 mb respectively. \nTh e theoretically simulated $^{59}$Co(γ\,n)$^{58}$Co\, $^{59}$Co(γ\,2n)$^{ 57}$Co reaction average cross-sections based on TALYS show a general agree ment with experimental data (18.58\, 6.69 mb respectively).\n\n\n1. H. Lic hblau\, A. Goldmann\, Z. Phys.\, 205\, No. 1\, 47 (1967).\n2. R.A. Alvarez \, B.L. Berman\, Phys. Rev. C\, Vol. 20\, 1 (1979).\n\nhttps://events.sinp .msu.ru/event/8/contributions/262/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/262/ END:VEVENT BEGIN:VEVENT SUMMARY:NEUTRON SCATTERING ANALYS BY LIGHT NUCLEI USED COUPLED CHANNEL OPT ICAL MODEL DTSTART;VALUE=DATE-TIME:20220713T070000Z DTEND;VALUE=DATE-TIME:20220713T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-285@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Skorkin (INR RAS)\nAt present\, an optical- model analysis of the scattering of nucleons by light nuclei\, which have a cluster structure and collective states\, is used.\n We have calculated the cross sections of fast neutron scattering on even-even nuclei of 1p sh ell used by rotational variants of CCOM. Nuclei with an unfilled 1p-shell are deformed and have a non-uniform nucleon distribution density. \nThe cr oss sections of elastic and inelastic scattering of neutrons by even isoto pes of helium\, beryllium\, carbon\, and oxygen with the excitation of rot ational states of these nuclei were calculated.\n\nhttps://events.sinp.msu .ru/event/8/contributions/285/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/285/ END:VEVENT BEGIN:VEVENT SUMMARY:Development of DCS for forward spectator detectors at the BM@N\, M PD/NICA and NA61/SHINE experiments DTSTART;VALUE=DATE-TIME:20220714T120000Z DTEND;VALUE=DATE-TIME:20220714T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-283@events.sinp.msu.ru DESCRIPTION:Speakers: Oleg Petukhov (INR RAS)\nAbstract\n\nThe BM@N and MP D experiments at NICA facility (Dubna\, Russia) will use the forward hadro n calorimeters (FHCal) for centrality and reaction plane determination in the heavy ion collisions. Also the BM@N setup features Scintillation Wall and the Beam Hodoscope detectors for charged fragments measurements. The N A61/SHINE experiment at CERN is using two projectile spectator detectors ( Main PSD and Forward PSD) for centrality and reaction plane measurements. \nAll detectors have light readout based on silicon photomultipliers. In e ach experiment forward detectors have several hundred readout channels. \n Forward detectors share the common architecture that simplifies the develo pment of the Detector Control System (DCS). The developed algorithms and s oftware for the DCS of these detectors to control the bias MPPCs voltages and the temperature of MPPCs and its integration into the experiment-wide DCS will be reported.\n\nhttps://events.sinp.msu.ru/event/8/contributions/ 283/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/283/ END:VEVENT BEGIN:VEVENT SUMMARY:Femtoscopic analysis of identical charged kaons in Pb–Pb collisi ons at 5.02 TeV with ALICE DTSTART;VALUE=DATE-TIME:20220713T122000Z DTEND;VALUE=DATE-TIME:20220713T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-233@events.sinp.msu.ru DESCRIPTION:Speakers: Gleb Romanenko (JINR\, MSU)\nFemtoscopy is an import ant tool for studying space–time properties of the emission sources crea ted in heavy-ion collisions such as spatial sizes\, evolution duration\, c ollective flow effects\, etc. The importance of kaon femtoscopy is to chec k different model scenarios that work equally well for pions. In this cont ribution\, we present the results of femtoscopic analysis of identical cha rged-kaon correlations in Pb–Pb collisions at 5.02 TeV. The results of o ne- and three-dimensional analyses show that the kaon femtoscopic radii ar e smaller for more peripheral collisions and decrease with increasing of t ransverse momentum. According to hydrokinetic models\, it might be explain ed by the radial expansion of the emission source. Comparison between the obtained three-dimensional radii and the integrated Hydro Kinetic Model ca lculations for two particularization temperatures obtained from two differ ent Equations of State has been performed. The one-dimensional radii are c ompared with the same results for other colliding systems\, Pb–Pb at 2.7 6 TeV\, p–Pb at 5.02 TeV and pp at 7 TeV\, as a function of event multip licity to check whether they have the common trend or not. Another importa nt result of this analysis is the extraction of the maximal emission times for kaons in a wide centrality range (from 0 to 90%).\n\nhttps://events.s inp.msu.ru/event/8/contributions/233/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/233/ END:VEVENT BEGIN:VEVENT SUMMARY:Electron accelerators design and construction at Lomonosov Moscow State University DTSTART;VALUE=DATE-TIME:20220715T093000Z DTEND;VALUE=DATE-TIME:20220715T095000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-271@events.sinp.msu.ru DESCRIPTION:Speakers: Vadim Khankin (Federal State Budget Educational Inst itution of Higher Education M.V.Lomonosov Moscow State University\, Skobel tsyn Institute of Nuclear Physics)\nThe report presents the results of the development of linear electron accelerators with energy from up to 10 MeV \, performed at the Skobeltsyn Institute of Nuclear Physics\, Lomonosov Mo scow State University\, as well as in Laboratory of Electron Accelerators MSU. Over the past year\, more than 30 accelerators of six different types have been delivered to customers. Linear accelerators for mobile\, statio nary and train cargo inspection systems with interlaced energies and pulse repetition rate up to 2 kHz\, accelerators for radiography\, a sterilizat ion accelerator with beam parameters that are adjustable over a wide range \, and an accelerator for a radiotherapy complex are described.\n\nhttps:/ /events.sinp.msu.ru/event/8/contributions/271/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/271/ END:VEVENT BEGIN:VEVENT SUMMARY:INVESTIGATION OF CRYSTAL AND MAGNETIC STRUCTURES OF MULTIFFERROIC MATERIAL UNDER HIGH PRESSURE DTSTART;VALUE=DATE-TIME:20220713T072000Z DTEND;VALUE=DATE-TIME:20220713T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-289@events.sinp.msu.ru DESCRIPTION:Speakers: Olga Lis (Frank Laboratory of Neutron Physics\, Join t Institute for Nuclear Research)\nMagnetoelectric multiferroics\, where a ferromagnetic and a ferroelectric order coexist and are coupled in a sing le phase\, have been a hot topic in condensed matter physics for a long ti me owing to their ability to facilitate next generation applications. Main ly\, understanding of the magnetoelectric effect in single-phase materials is one of the most exciting and interesting topics of research in the sol id-state physics. Pb(Fe2/3W1/3)O3 (PFWO) belongs to the family of Pb-based multiferroic relaxor ferroelectric complex perovskites (AB′1−xB′′ xO3). It is generally accepted that this material exhibits a disordered pe rovskite structure\, where Fe3+ and W6+ ions are randomly distributed at t he centers of the BO6 octahedra. However\, recently studies have revealed the presence of the set of superlattice reflections\, which indicates some kind of B-cation ordering in PFWO which had been thought to be totally di sordered. It was found that the crystal structure of PFWO should be descri bed by a partly ordered cubic perovskite (i.e. Fm−3m)\, also\, the weak ferromagnetic properties and excess magnetic moment of PFWO can be underst ood based on non-random distribution of Fe cations between the 4a and 4b s ites. Despite intensive studies\, understanding the exact nature of its mu ltifunctional properties of PFW has remained a challenge for decades. The knowledge of relationship between magnetic and crystal structure of such c ompounds\, which can be obtained from high-pressure investigations\, is ve ry essential for understanding the nature and mechanism of physical phenom ena observed in it. In addition\, the detail studies of structural changes under extreme conditions were not carried out.\nIn present work was perfo rmed neutron diffraction studies of PFWO at high pressures and low tempera ture. Neutron powder diffraction measurements at high pressures up to 7 GP a were performed with the DN-12 diffractometer at the IBR-2 high-flux puls ed reactor [FLNP\, JINR\, Dubna\, Russia] using the sapphire anvil high-pr essure cell. In order to improve the understanding of the lattice instabil ities the Raman spectroscopy studies of the vibration spectra of the compo und under pressure up to 30 GPa were performed. The crystal structure of t his compound also has been studied by X-ray diffraction at high pressures. Pressure dependences of the volume\, unit cell parameters and of magnetic moments of antiferromagnetic (AFM) phase\, Neel temperature were also cal culated. With increasing temperature and pressure\, slight decreasing of t he magnetic moments of iron ions in PFWO were observed\, however\, althoug h the crystal structure remains stable up to high pressures with a space g roup Pm-3m. Some Raman modes have been found on the Raman spectra\, which in such compounds are correlated with the existence of nanoregions\, howev er\, with increasing pressure\, these modes noticeably widen and vanish.\n The work was supported by the JINR Grant for young scientists 22-402-03.\n \nhttps://events.sinp.msu.ru/event/8/contributions/289/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/289/ END:VEVENT BEGIN:VEVENT SUMMARY:The role of plasma screening for the location of the QCD Critical end Point DTSTART;VALUE=DATE-TIME:20220714T070000Z DTEND;VALUE=DATE-TIME:20220714T073000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-604@events.sinp.msu.ru DESCRIPTION:Speakers: Alejandro Ayala (Instituto de Ciencias Nucleares\, U NAM)\nI show that in a strongly interacting plasma\, the fluctuations resp onsible for deviations from those of a description based on a simple Hadro n Resonance Gas Model naturally arise from the proper inclusion of the pla sma screening properties. These are encoded in the contribution of the so called "ring diagrams" and thus in the introduction of a key feature of pl asmas near phase transitions\, namely\, long-range correlations. I illustr ate this property using the Linear Sigma Model with quarks which in the hi gh temperature and chiral symmetry approximations renders analytical resul ts. After fixing the model parameters using input from LQCD for the crosso ver transition at vanishing baryon chemical potential\, I study the locati on of the Critical End Point (CEP) in the effective QCD phase diagram. I u se the model to study baryon number fluctuations and show that in heavy-io n collisions\, the CEP can be located for collision energies of order of 2 GeV per nucleon\, namely\, in the lowest NICA or within the HADES energy domain.\n\nhttps://events.sinp.msu.ru/event/8/contributions/604/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/604/ END:VEVENT BEGIN:VEVENT SUMMARY:Using Tagged Neutron Method for On-line Analysis of Materials on C onveyor DTSTART;VALUE=DATE-TIME:20220713T132000Z DTEND;VALUE=DATE-TIME:20220713T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-288@events.sinp.msu.ru DESCRIPTION:Speakers: Albina Akhunova (Diamant LLC)\nThis paper discusses the application of the AGP-K conveyor analyzer to solve the problem of con trolling the elemental composition of material on the conveyor. The result of the analyzer operation is given and the obtained data are discussed.\n The results of using tagged neutron method for on-line analysis of materia ls on conveyor are presented. The method of tagged neutrons makes it possi ble to determine the concentrations of the desired elements inside objects contactless\, due to the large penetrating power of neutrons.\nThe Tagged Neutron Method consists in irradiating the object of analysis with beams of fast neutrons with an energy of 14\,1 MeV\, which are formed in the rea ction d + 3H → 4He + n. [1-3] In this reaction\, the neutron and the α- particle fly apart in almost opposite directions. Therefore\, by registeri ng the α-particle accompanying the neutron\, it is possible to determine the direction of neutron departure. This procedure is called tagging of ne utron. A fast neutron with an energy of 14\,1 MeV enters the substance of the object and interacts with the nuclei of the substance in inelastic sca ttering reactions (n\, n'γ). Since each chemical element has its own char acteristic gamma spectrum\, it is possible to conduct an elemental analysi s of the object under study.\nIrradiation of the material on the conveyor occurs by a beam of fast tagged neutrons with an energy of 14 MeV from the ING-27 portable neutron generator manufactured by NL Dukhov All-Russian S cientific Research Institute of Automation (VNIIA)\, gamma quanta from ine lastic scattering reactions are recorded by a system of 14 scintillation d etectors based on a BGO crystal. Tagged neutron is carried out by registra tion of α-particles formed in the reaction d+3H →4He+n\, which makes it possible to reduce the influence of the background by 200 times. The anal yzer also includes power systems\, data collection systems and biological protection.\nThe analyzer provides data on the elemental composition of ma terial on the conveyor every 40-60 seconds. The results of the analyzer op eration for control of sinter are discussed. \n1. V. Valkovic\, «14 MeV N eutrons: Physics and Applications»\, Taylor & Francis Group\, 2016\, 516 p.\n2. Alexakhin V.Y. et al.\, «Detection of Diamonds in Kimberlite by t he Tagged Neutron Method.»\, Nuclear Instruments and Methods" A785\, 2015 \, 9 p.\n3. V.M. Bystritsky et al.\, «Physics of Particles and Nuclei Le tters»\, 2008\, Volume 5\, p.441.\n\nhttps://events.sinp.msu.ru/event/8/c ontributions/288/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/288/ END:VEVENT BEGIN:VEVENT SUMMARY:NUCLEAR REACTIONS CONTRIBUTION IN SPACECRAFT ON-BOARD ELECTRONICS FAILURES DTSTART;VALUE=DATE-TIME:20220716T102500Z DTEND;VALUE=DATE-TIME:20220716T110000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-592@events.sinp.msu.ru DESCRIPTION:Speakers: Nikolay Chechenin (Lomonosov Moscow State University )\nIn a wide range of characteristics of the corpuscular radiation of the near-Earth outer space\, protons dominate (more than 90%)\, which have a h igh penetrating power and cause radiation damage and upset the onboard ele ctronics (OBE) of the spacecraft. The nature of failures can be either deg radation of the initial characteristics of OBE elements with increasing ra diation dose\, or a failure as a result of the generation of a sufficientl y high number of electron-hole pairs during ionization of OBE atoms by pas sing primary radiation (protons)\, or products of nuclear reactions betwee n primary radiation and OBE atomic nuclei. In the report we shall give a b rief analysis of the probability of failures of electronics under the infl uence of primary radiation and fragments-products of nuclear reactions\, w hich have a significantly higher ionizing capacity.\n\nhttps://events.sinp .msu.ru/event/8/contributions/592/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/592/ END:VEVENT BEGIN:VEVENT SUMMARY:ALGORITHMS FOR DESIGNING POWERFUL MULTICAVITY KLYSTRONS DTSTART;VALUE=DATE-TIME:20220715T151000Z DTEND;VALUE=DATE-TIME:20220715T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-478@events.sinp.msu.ru DESCRIPTION:Speakers: Valentin Ivanov (BINP SB RAS)\nThe Super S-tau Facto ry project [1]\, carried out by the Institute of Nuclear Physics of the Si berian Branch of the Russian Academy of Sciences\, makes the development o f a 50-megawatt S-band klystron especially topical. The paper describes th e algorithms for calculating and designing such a klystron\, as well as th e characteristics of the program created for this purpose. Comparisons of the results obtained by this program with the results of calculations usin g the CST Microwave Studio are given.\nAlgorithms for designing individual elements and assemblies of advanced multi-beam klystrons and sheet-beam k lystrons (electron guns\, cavities etc/) based on the boundary element met hod are described in the author's monograph [2].\n\n1. https://ctd.inp.nsk .su/c-tau/.\n2. V. Ivanov. Computational methods\, optimization and synthe sis in electron optics. - Hmbg: Palmarium Academic Publishing\, 2016. -525 pp.\n\nhttps://events.sinp.msu.ru/event/8/contributions/478/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/478/ END:VEVENT BEGIN:VEVENT SUMMARY:TOF MEASUREMENT OF LOW-ENERGY NEUTRON SCATTERING BY DEFORMED NUCLE I DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-292@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Skorkin (INR RAS)\nThe measurement of cross sections for neutron scattering by deformed nuclei in the energy range fr om 1 keV to 3 MeV is possible on the time-of-flight (TOF) channel of a pul sed neutron source based on a linac proton beam trap. The use of a beam wi th a duration of 0.3 μs will make it possible to measure neutron cross se ctions in this energy range with a resolution of (1–30)% over a 50 m spa n. Using elastic neutron scattering on W sample\, the neutron spectrum was measured in the TOF channel of a pulsed source at an accelerator beam cur rent of 1 μA \nMeasurement of the inelastic neutron scattering cross sect ion at the threshold of excitation of rotational states of deformed nuclei up to 0.5 MeV is relevant for nuclear power engineering. When calculating the dynamics of nuclear reactors\, it is necessary to take into account t he energy dependence of the neutron strength functions of nonspherical nuc lei\, which can be determined from the measured total cross sections in th e range from 1 keV to 2 MeV.\n\nhttps://events.sinp.msu.ru/event/8/contrib utions/292/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/292/ END:VEVENT BEGIN:VEVENT SUMMARY:A SPECIFIC HEAT OF NUCLEAR MEDIUM PROBED BY $K_S^0$ MESONS PRODUC ED IN $Au+Au$ COLLISIONS AT RHIC DTSTART;VALUE=DATE-TIME:20220713T130000Z DTEND;VALUE=DATE-TIME:20220713T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-553@events.sinp.msu.ru DESCRIPTION:Speakers: Mikhail Tokarev (Join Institute for Nuclear Research )\nThe data [1] on spectra of $K_S^0$ mesons measured by the STAR Collabor ation in Au+Au collisions at various centralities characterized by differe nt multiplicity densities of negative particles were analyzed in the $z$-s caling approach [2\,3]. The transverse momentum distributions obtained in the BES-I program at RHIC were accumulated in seven centrality classes fro m the most central 0-5% to peripheral 60-80% collisions in the rapidity ra nge $|y|<0.5$. These data and the earlier STAR data at $\\sqrt {s_{NN}}=$ 62\, 130 and 200 GeV allow us a detail study of the energy and centrality dependence of $K_S^0$-meson production in a wide range of $\\sqrt {s_{NN}} =$ 7.7–200 GeV.\nThe scaling function $\\psi(z)$ was constructed and the self-similarity of $K_S^0$-meson production was confirmed. It was found t hat the model parameter $c_{AuAu}$ interpreted as a specific heat of produ ced medium depends on collision energy. The scaling behavior is consistent with an abrupt decrease of $c_{AuAu}$ from the value of 0.16 at $\\sqrt { s_{NN}}=$ 7.7 and 11.5 GeV to about 0.09 at the top RHIC energy. At $\\sqr t {s_{NN}}=$39 GeV\, a kink in the significant drop of this parameter is o bserved\, as well as an indication of its flattening at higher $\\sqrt {s_ {NN}}$. The non-trivial dependence of $c_{AuAu}$ on the collision energy obtained from the $z$-scaling of $K_S^0$-meson production shows that the s trange probe is much more sensitive to properties of nuclear medium than a non-identified negative hadron [3]. The irregularities in the behavior of the specific heat parameter cAuAu could indicate existence of a phase tra nsition in nuclear matter.\n\n1. J. Adam et al. (STAR Collaboration)\, Phy s. Rev. C 102\, 034909 (2020).\n2. M. Tokarev et al.\, Phys. Part. Nucl. 5 1\, 141 (2020).\n3. M. Tokarev\, A. Kechechyan\, I. Zborovský\, Nucl. Phy s. A 993\, 121646 (2020).\n\nhttps://events.sinp.msu.ru/event/8/contributi ons/553/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/553/ END:VEVENT BEGIN:VEVENT SUMMARY:THE DOSIMETRY OF FLASH PROTON BEAMS DTSTART;VALUE=DATE-TIME:20220712T124000Z DTEND;VALUE=DATE-TIME:20220712T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-290@events.sinp.msu.ru DESCRIPTION:Speakers: Ivan Yakovlev (INR RAS)\nProton flash therapy with h igh dose rates is at the forefront of cancer treatment. The phenomenon of flash effect is to reduce the damage to normal cells with an extreme dose rate increase of over 40 Gy/s.\nRadiobiological experiments aimed at study ing this phenomenon may require a special dosimetry equipment [1].\nOur wo rk consisted of the formation system settings [2] including the spread-out Bragg peak (SOBP) localization and measuring the absolute values of the a bsorbed dose in the SOBP region in the water phantom PTW MP3 P T41029.\nWe used PTW Advanced Markus Chamber Type 34045 ionization chambers (IC) in p air with Scanditronix IC-10 connected to a PTW MULTIDOSE electrometer for relative dosimetry.\nFor absolute dosimetry\, we used a PTW 31010 IC and G afChromic EBT-XD films. The measured SOBP and the detectors’ location is shown in Figure 1. The result corresponds to a decrease of IC dose referr ed to film values by 15% in the conventional dose rate. At a dose rate abo ve 50 Gy/s\, the response of the films is an order of magnitude greater th an the corresponding radiochromic film data. It indicates the impropriety of using ionization chambers in radiobiological experiments with proton be ams at high and ultrahigh dose rates.\n\n1. Desrosiers\, Marc et al. “Th e Importance of Dosimetry Standardization in Radiobiology.” J Res Natl I nst Stan vol. 118 403-18. 30 Dec. 2013\, doi:10.6028/jres.118.021 \n2. Aku linichev S.V.\, et al. Possibilities of Proton FLASH Therapy on the Accele rator at the Russian Academy of Sciences’ Institute for Nuclear Research . Bull. Russ. Acad. Sci. Phys. 84\, 1325–1329 (2020).\n\nhttps://events. sinp.msu.ru/event/8/contributions/290/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/290/ END:VEVENT BEGIN:VEVENT SUMMARY:Segmented HPGe Detector for Nuclear Reactions Research DTSTART;VALUE=DATE-TIME:20220712T151000Z DTEND;VALUE=DATE-TIME:20220712T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-291@events.sinp.msu.ru DESCRIPTION:Speakers: Артём Быстряков ()\nThis work presents the results of a study of the new true coaxial high-purity germanium p-ty pe detector with a segmented n+ region. One of the main features of the de tector is flowing endcap\, which is allow to place a source or target insi de of the detector. Thanks to it and six-fold segmentation of the crystal\ , it is possible to determine the direction of individual photons emitted from the source or during a nuclear reaction between ion beam and a target inside the ionizing radiation source. At the same time the flowing endcap give’s possibility to study not only γγ\, but also αγγ- or βγγ- correlations\, by the possibility to install the six-fold Si-detector ins ide of the HPGe detector.\n\nhttps://events.sinp.msu.ru/event/8/contributi ons/291/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/291/ END:VEVENT BEGIN:VEVENT SUMMARY:Sub Coulomb barrier d+208Pb scattering in the time-dependent basis function approach DTSTART;VALUE=DATE-TIME:20220712T072000Z DTEND;VALUE=DATE-TIME:20220712T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-201@events.sinp.msu.ru DESCRIPTION:Speakers: Peng Yin ()\, Xingbo Zhao (Institute of Modern Physi cs\, Chinese Academy of Sciences)\, James P. Vary ()\nWe investigate the s cattering of the deuteron on 208Pb below the Coulomb barrier based on the non-perturbative time-dependent basis function (tBF) approach[1]. We obtai n the bound and discretized scattering states of the projectile\, which fo rm the basis representation of the tBF approach\, by diagonalizing a reali stic Hamiltonian in a large harmonic oscillator basis. \nWe find that the higher-order inelastic scattering effects are noticeable for sub barrier s catterings with the tBF method. By considering all the possible electric d ipole (E1) transition paths among all the states involved in the tBF appro ach and taking into account the corrections of the polarization potential to Rutherford trajectories\, we have successfully reproduced experimental sub Coulomb barrier elastic cross section ratios with the tBF approach. We find that both the internal E1 transitions of the deuteron projectile and the corrections of the polarization potential to the classical Rutherford trajectories are essential for reproducing experimental data in these sub barrier experiments. More specifically\, the correction of the polarizati on potential to the Rutherford trajectory is dominant in reproducing the d ata at very low bombarding energies\, whereas the role of internal transit ions of the deuteron projectile induced by the E1 interaction during the s cattering becomes increasingly significant at higher bombarding energies. \n\n1. Peng Yin\, Weijie Du\, Wei Zuo\, Xingbo Zhao\, James P. Vary\, arXi v: 1910.10586 [nucl-th].\n\nhttps://events.sinp.msu.ru/event/8/contributio ns/201/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/201/ END:VEVENT BEGIN:VEVENT SUMMARY:ROTATIONAL SPECTRA OF EVEN-EVEN ACTINIDE AND RARE-EARTH NUCLEI DTSTART;VALUE=DATE-TIME:20220715T093000Z DTEND;VALUE=DATE-TIME:20220715T095000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-294@events.sinp.msu.ru DESCRIPTION:Speakers: Abdurahim Okhunov (International Islamic University Malaysia)\nAn approach based on the idea that the spinning nucleus being s tretched out along the symmetry axis under the influence of some sort of c entrifugal force has been proposed. Our approach led to the modified formu la to describe the dependence of the moment of inertia on the angular mome ntum.\n\nhttps://events.sinp.msu.ru/event/8/contributions/294/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/294/ END:VEVENT BEGIN:VEVENT SUMMARY:Vorticity and helicity fields in heavy-ion collisions and hyperon polarization DTSTART;VALUE=DATE-TIME:20220713T143000Z DTEND;VALUE=DATE-TIME:20220713T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-526@events.sinp.msu.ru DESCRIPTION:Speakers: Nikita Tsegelnik (BLTP\, JINR\, Dubna)\nThe experime ntally observed significant polarization of $\\Lambda$ and anti-$\\Lambda$ particle in heavy-in collisions [1] lead to speculations that rapidly rot ating swirls are of nuclear matter are created [2]. We use the transport m odel PHSD to simulate the Au+Au and Pb+Pb collisions at NICA energies and perform the fluidization procedure determining density\, temperature\, and velocity fields created at different stages of the collisions. Vorticity and hydrodynamic helicity fields are calculated and visualized in dynamics . The velocity field is illustrated on the left panel in Fig.1. It looks d ominantly as the Hubble-like profiles expanding in transverse and longitud inal directions (approximate cylindrical symmetry). The small vorticity fi eld looks like a small perturbation on top of the longitudinal and transve rse flows. The vorticity field is shown on the right panel of Fig.1. We se e that two vortex (asymmetrical) rings moving in the opposite direction al ong the $z$-axes are formed. The PHSD model is proved to describe successf ully hyperon yields in the broad range of collision energies of our intere st. Therefore\, we can calculate the polarization of (anti-)hyperons on a dynamic freeze-out surface. The experimental polarization of $\\Lambda$ is well reproduced. However\, the anti-$\\Lambda$ polarization is underestim ated.\n\n![](https://events.sinp.msu.ru/event/8/abstracts/637/attachments/ 500/V3D-Au77-b75-t090-v3.png) ![](https://events.sinp.msu.ru/event/8/abstr acts/637/attachments/501/W3D-Au77-b75-t090-v3.png)\nFig. 1. Velocity and v orticity fields calculated within PHSD model for Au+Au collisions at $\\sq rt{s_{NN}}=7.7GeV$ for impact parameter $b=7.5fm$ at the time moment $t=7. 7fm/c$\n\n1. L. Adamczyk et al.\, Nature 548\, 62 (2017).\n2. H. Petersen\ , Nature 548\, 34 (2017).\n\nhttps://events.sinp.msu.ru/event/8/contributi ons/526/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/526/ END:VEVENT BEGIN:VEVENT SUMMARY:NMR-BASED INJECTION FIELD MEASUREMENT SYSTEM FOR MEDICAL PROTON SY NCHROTRON DTSTART;VALUE=DATE-TIME:20220715T120000Z DTEND;VALUE=DATE-TIME:20220715T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-268@events.sinp.msu.ru DESCRIPTION:Speakers: Mikhail Belikhin (Lomonosov Moscow State University) \nOne of the main processes in a proton synchrotron is capture of particle s during injection. For successful capture\, it is necessary to measure th e magnetic field in the orbit with high accuracy. Widely used Hall sensors have many disadvantages: not very high precision and long-term stability\ , low radiation resistance\, angular dependence and etc. All these cause d ifficulties in setting of the synchrotron and reduce the stability of its operation\, which is especially important for medical accelerators. Theref ore\, the development of new methods for control of the injection field\, will improve the stability of medical synchrotrons and reduce the treatmen t time [1].\nThe purpose of this work is to develop a high-precision NMR-b ased system for measuring and controlling the injection magnetic field for the medical proton synchrotron [2].\nThe developed system is based on a p ulsed proton NMR-gaussmeter. The magnetic field measurement is made by mea suring the frequency of spin echoes after 180-degree pulses in Carr-Purcel l-Meiboom-Gill sequence. The measuring probe is installed in the vacuum ch amber of the synchrotron in close proximity to the injection channel. The NMR-gaussmeter is built on a modern electronic element base. Control\, fre quency measurement and data transfer are realized by high-speed ARM-microc ontroller. The NMR-gaussmeter is configured and controlled using PC-softwa re designed in Lab Windows CVI.\nThe measuring probe provides an NMR-signa l from the quasi-constant synchrotron’s magnetic field of about ≈1000 Gs (corresponding to proton injection energy of ≈1 MeV) with the possibi lity of digital tuning of the resonant frequency in the range of ±50 Gs. The magnetic field is measured with an accuracy of no worse than 0.1 Gs. T he measurement time is 20 ms. The signal-to-noise radio is at least 5.\nTh e developed system makes it possible to measure the injection magnetic fie ld in real time directly in the acceleration cycle and to ensure the stabl e capture of particles.\n\n1. Chernyaev A.P.\, Klenov G.I.\, Bushmanov A.Y .\, Pryanichnikov A.A.\, Belikhin M.A.\, Lykova E.N. Proton Accelerators f or Radiation Therapy // Medical Radiology and radiation safety . 2019. no. 2. pp. 11-22.\n2. A.A. Pryanichnikov\, V.V. Sokunov\, A.E. Shemyakov\, So me Results of the Clinical Use of the Proton Therapy Complex «Prometheus »\, Physics of Particles and Nuclei Letters\, 2018\, Vol. 15 no. 7.\, P.9 81-985.\n\nhttps://events.sinp.msu.ru/event/8/contributions/268/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/268/ END:VEVENT BEGIN:VEVENT SUMMARY:FOURIER-IR SPESTROSCOPIC STUDIES OF n-C6H14 AND n-C6H14 + H2O SYST EMS DTSTART;VALUE=DATE-TIME:20220713T072000Z DTEND;VALUE=DATE-TIME:20220713T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-297@events.sinp.msu.ru DESCRIPTION:Speakers: Sevinj Melikova ()\nRadiation-catalytic processes fo r the production of molecular hydrogen from a mixture of hexane and hexane -water It is of great interest to discover new ways of conversion and use of ionizing radiation for the production of molecular hydrogen\, which is a universal energy carrier. The results of the research may be important t o clarify the mechanism of the processes that occur under experimental con ditions under the influence of ionizing radiation in the hexane\, hexane-w ater system\, as well as under natural conditions in oil and gas fields un der the influence of natural radionuclides.\nIn the presented work\, Fouri er-IR spestroscopic studies of n-C6H14 and n-C6H14 + H2O systems were perf ormed. The results of spectroscopic studies suggest that the ratios of the intensities of the absorption bands characterizing the CH2\, CH3 groups v ary depending on the dose rate (valence and deformation oscillations of CH 2 and CH3 are 2800 - 2970 cm-1 and 1300 - 1500 cm-1\, respectively. 1 are located in the spectral regions). Absorption bands - (CH2) belong to the l ong chain type of type n (n4) and CH2 lattice oscillations (spectral re gion  = 650 - 850 cm-1). During radiolysis of the n-hexane + water syst em (3:1) after gamma radiation\, 5 new bands are observed in the frequency range  = 2600 - 2700 cm-1\, which indicates that the decomposition of n-hexane produces heavier paraffin during radiation-chemical processes. - The change and distribution of the maximums and intensities of absorption bands in the chain region of (CH2) ( = 650 - 850 cm-1) indicates the fo rmation of paraffins of type C1 - C5. The formation of C1 - C5 products is confirmed by the spectra of gases in the system under study. The decompos ition of water in the studied system is followed by the formation of absor ption bands of OH-groups in the spectra in the frequency range  = 3000 - 3600 cm-1 (valence region)\,  = 1700 - 1600 cm-1 (deformation region) . The formation of olefins as a result of radiolysis of the n-hexane + wat er (3:1) system was not observed in the IR spectra.\n\nhttps://events.sinp .msu.ru/event/8/contributions/297/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/297/ END:VEVENT BEGIN:VEVENT SUMMARY:The role of parton distribution functions in the ϕ meson producti on in relativistic ion collisions DTSTART;VALUE=DATE-TIME:20220713T151000Z DTEND;VALUE=DATE-TIME:20220713T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-263@events.sinp.msu.ru DESCRIPTION:Speakers: Mariia Mitrankova (Peter the Great St.Petersburg Pol ytechnic University (SPbPU))\nLattice gauge QCD calculations predict phase transition from hadronic matter to deconfined state of quarks and gluons - quark-gluon plasma (QGP) - at a high temperature and energy density [1]. Minimal conditions of the QCD phase transition and QGP matter formation a re studied in relativistic small-system collisions [2]. One of the ways to investigate QGP properties in experiment is to measure the peculiarities of particles production [2]. Due to its characteristics\, the vector *ϕ* meson is considered as a good probe of the partonic matter formed in relat ivistic ion collisions [3].\n\nThe cross section of particle production in hard processes in the leading order QCD at the parton level is determined using nuclear parton distribution functions (nPDFs) [4-6]. These function s characterize the probability of a parton to have a certain fraction of t he nucleon momentum inside the ion at any scale of the square of the momen tum transfer in the interaction. The distributions are extracted from comp rehensive global analysis of hard scattering data from variety of fix-targ et and collider experiments in framework of pQCD. The implementing of vari ous sets of nPDF parameterizations [4-6] may help to interpret the experim ental results on particle production. \n\nThis report presents the compari son of *ϕ* meson production in *p*+Al\, *p*+Au\, *d*+Au\, and 3He+Au coll isions at √sNN = 200 GeV at midrapidity (|η|<0.35)\, measured at PHENIX [1]\, to PYTHIA/Angantyr\, PYTHIA+EPPS16\, and PYTHIA+nCTEQ15 nPDFs calcu lations. Model calculations are consistent with experimental data within u ncertainties. However\, at intermediate transverse momentum range\, PYTHIA /Angantyr\, PYTHIA+EPPS16\, and PYTHIA+nCTEQ15 calculations do not predict the ordering of *ϕ* meson production with the collision system size\, ob served in the experiment. Therefore\, *ϕ* meson production in *p*/ *d*/ 3 He+Au collisions at √sNN = 200 GeV might be driven by mechanisms additio nal to nPDF.\n\nWe acknowledge support from Russian Ministry of Education and Science\, state assignment for fundamental research (code FSEG-2020-00 24) in the *ϕ* meson production in 3He+Au collisions part of the analysis .\n\n1. K. Adcox et al. (PHENIX Collaboration)\, Nucl. Phys. A\, 757\, 184 (2005).\n2. M.M. Mitrankova et al. Phys. Scr. 96\, 084010 (2021).\n3. C.P . Singh\, Vivek Kumar Tiwari\, K.K. Singh\, Phys. Lett. B 393\, 188 (1997) .\n4. C. Bierlich\, G. Gustafson\, L. Lönnblad\, H. Shah\, JHEP 10\, 134 (2018).\n5. K.J. Eskola\, P. Paakkinen\, H. Paukkunen\, C.A. Salgado\, Eur . Phys. J. C 77\, 163 (2017).\n6. K. Kovark et al. Phys. Rev. D. 92\, 8\, 085037 (2016).\n\nhttps://events.sinp.msu.ru/event/8/contributions/263/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/263/ END:VEVENT BEGIN:VEVENT SUMMARY:INCREASING THE UNIFORMITY OF RADIATION TREATMENT UNIFORMITY OF OBJ ECTS USING MODIFIER PLATES DTSTART;VALUE=DATE-TIME:20220714T151000Z DTEND;VALUE=DATE-TIME:20220714T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-298@events.sinp.msu.ru DESCRIPTION:Speakers: Felix Studenikin (Lomonosov Moscow State University) \nINCREASING THE UNIFORMITY OF RADIATION TREATMENT UNIFORMITY OF OBJECTS U SING MODIFIER PLATES\n\nStudenikin F.R. 1\,2\, Bliznyuk U.A. 1\,2\, Chern yaev A.P. 1\,2\, Borshevskaya P.Yu. 1\,2\, Ipatova V.S. 2\, Nikitchenko A .D. 1\, Zolotov S.A. 1\, Hankin\, V.V. 2\, Krusanov G.A.3.\n\n1 Physics Department\, Moscow State University\, Moscow\, 119234 Russia\n2 Skobeltsy n Institute of Nuclear Physics Lomonosov Moscow State University\, Moscow\ , 119234 Russia\n3 Burnasyan Federal Medical Biophysical Center\, Federal Medical Biological Agency\, Moscow\, 123098 Russia\n*e-mail: f.studenikin@ gmail.com\nToday more than 70 countries around the world have radiation pr ocessing centers for treatment of food and medical products [1]. Such radi ation processing centers increasingly use electron accelerators\, due to t he higher dose rate received by the facility compared to authorized radioa ctive sources and\, as a consequence\, a higher rate of food processing [1 ].\nDuring treatment with accelerated electrons\, heterogeneity of irradia tion of objects is inevitable [2]. For most medical products uniformity of irradiation of about 50% is sufficient. But for other categories of irrad iated objects\, such as transplantation equipment\, pharmaceuticals\, chil led meat and fish products\, it is necessary to ensure the uniformity of i rradiation of at least 80% [1-3].\nIt is possible to use electron energy v ariation over several irradiation sessions to increase the uniformity of d ose distribution over the volume of treated objects [4]. However\, a repea ted irradiation increases treatment time and cost. In addition\, for some treated objects it is not recommended to stay outside the cooling chambers for a long time. Therefore\, it is an important to develop a method that would allow to increase radiation treatment uniformity in one irradiation session\, which is the subject of this study.\nThis paper proposes a metho d for modifying beam spectrum using aluminum modifier plates\, which allow s to increase the irradiation uniformity up to 0.97 for the radiation trea tment of parallelepiped-shaped objects with a mass thickness up to 3.125 g /cm2 by accelerated electrons with energies up to 10 MeV. The possibility of applying the method to the irradiation of spherical and cylindrical obj ects is shown. The experiment showed that the proposed method of electron beam modification is applicable to radiation treatment of objects at indus trial electron accelerators UELR 10-15-C-60 [6] and ILU-14 [7] to increase the uniformity of irradiation. \nThe research was supported by RFBR grant № 20-32-90237 "Aspirants" and interdisciplinary scientific and educatio nal school of Moscow University "Photonic and Quantum Technologies. Digita l Medicine".\nReferences\n1. Chernyaev A.P. // Moscow\, 2018.\n2. Vienna: International Atomic Energy Agency\, 2008.\n3. Effect of electron and x-ra y irradiation on microbiological and chemical parameters of chilled turkey / U. Bliznyuk\, V. Avdyukhina\, P. Borshchegovskaya et al. // Scientific reports. — 2022. — Vol. 12\, no. 1. — P. 750. \n4. Miller R.B. Elect ronic Irradiation of Foods: An Introduction to the Technology // Springer - Food engineering series. 2005. DOI:10.1007/0-387-28386-2.\n5. V.I. Shved unov\, A.S. Alimov\, A.N. Ermakov\, A.N. Kamanin\, V.V. Khankin\, A.S. Kur ilik\, L.Yu Ovchinnikova\, N.I. Pakhomov\, N.V. Shvedunov\, D.S. Yurov\, I .V. Shvedunov\, A.S. Simonov\, Electron accelerators design and constructi on at Lomonosov Moscow State University\, Radiation Physics and Chemistry\ , 2019\, v. 159\, p. 95-100.\n6. Industrial linear electron accelerator // А.А. Bryazgin\, V.I. Bezuglov\, E.N. Kokin and others / Instruments and experimental technique\, 2011\, No 3\, pp. 5–21.\n\nhttps://events.sinp .msu.ru/event/8/contributions/298/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/298/ END:VEVENT BEGIN:VEVENT SUMMARY:DIRECT ONE-NEUTRON DECAY OF THE ISOSCALAR GIANT DIPOLE RESONANCE I N MEDIUM-HEAVY SPHERICAL NUCLEI: A SEMI-MICROSCOPIC DESCRIPTION DTSTART;VALUE=DATE-TIME:20220712T132000Z DTEND;VALUE=DATE-TIME:20220712T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-301@events.sinp.msu.ru DESCRIPTION:Speakers: Mikhail Gorelik (Moscow Economic School)\nDirect one -nucleon decay of giant resonances (GRs) is the subject of permanent (but not-too-intensive) experimental and theoretical studies. They allow one to get information on GR structure and decay mechanisms. Decay probabilities are usually deduced from a common analysis of cross sections of direct in clusive and “decay” reactions. In Ref. [1]\, direct one-neutron decay of Isoscalar Giant Dipole Resonance (ISGDR) in 90Zr\, 116Sn\, and 208Pb ha ve been studied via the (α\,α^' )- and (α\,α^' n)-reactions. To some e xtent\, this study has been stimulated by predictions made in Ref. [2] for partial branching ratios b_μ of direct one-neutron ISGDR decay accompani ed by population of neutron-hole states μ^(-1) in product nuclei. A simpl e extension of standard and nonstandard continuum-RPA versions to taking p henomenologically the spreading effect into account has been exploited in Ref. [2]. The experimental values b=∑_μ▒b_μ (the sum is taken over a few valence neutron-hole states) were found in Ref. [1] to be essentiall y less than the respective predicted values.\nIn the present work\, we\, f irst\, specify the approach of Ref. [2]\, employing for evaluation of b_μ values the semi-microscopic Particle-Hole Dispersive Optical Model (see\, e.g.\, Ref. [3] and references therein) and\, secondly\, use the alternat ive definition for b_μ employed in Ref. [1]. These points allow us to red uce markedly the difference between theoretical and experimental b values related to direct one-neutron decay of ISGMR in the above-mentioned nuclei . \nThis work is partially supported by the Russian Foundation for Basic R esearch\, under Grant no. 19-02-00660 (M.L.G.\, B.A.T.\, M.H.U.)\, by the US Department of Energy\, under Grant no. DE-FG03-93ER40773 (S.S.)\, and b y the Program “Priority – 2030” for National Research Nuclear Univer sity “MEPhI” (M.H.U.).\n\n1. Hunyadi M.\, Van den Berg A.M.\, Davids B .\, Harakeh M.N. et al.\, Phys. Rev. C 75\, 014606 (2007).\n2. Gorelik M.L .\, Safonov I.V.\, and Urin M.H.\, Phys. Rev. C 69\, 054322 (2004).\n3. Go relik M.L.\, Shlomo S.\, Tulupov B.A.\, and Urin M.H.\, Phys. Rev. C 103\, 034302 (2021).\n\nhttps://events.sinp.msu.ru/event/8/contributions/301/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/301/ END:VEVENT BEGIN:VEVENT SUMMARY:Upgrade of Projectile Spectator Detector at NA61/SHINE experiment DTSTART;VALUE=DATE-TIME:20220712T151000Z DTEND;VALUE=DATE-TIME:20220712T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-300@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Morozov (INR RAS)\nProjectile Spectator Detec tor (PSD) is a sampling hadron calorimeter used in the NA61/SHINE experime nt to provide measurement of collision centrality and event plane reconstr uction independently from tracking detectors. The PSD consists of modules with longitudinal segmentation based on lead/scintillator layers with the sampling ratio 4:1. Light from scintillator plates is collected with WLS f ibers and each six consecutive scintillator plates are read out by one Ham amatsu MPPC placed at the end of the module. A fast analog signal from PSD modules allows to select events with required centrality on-line at the t rigger level. Performance of the PSD will be shown for the measurements at the energy range 13 – 150 AGeV.\n New physics program of NA61/SHINE ex periments beyond 2020 includes open charm measurements. Current beam rate has to be increased by an order of magnitude. This requires PSD upgrade to survive in new high radiation conditions and to have faster photodetector s and read-out electronics. Instead of the present PSD\, it is proposed to use two forward calorimeters. The first one is modified current PSD with constructed beam hole in the center and the second one is a new calorimete r with small transverse sizes placed downstream. Details of the PSD upgra de including simulation results of radiation conditions as well as results of the performance studies for new calorimeter system will be presented.\ n\nhttps://events.sinp.msu.ru/event/8/contributions/300/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/300/ END:VEVENT BEGIN:VEVENT SUMMARY:CONJUGATE OBJECTS IN QUANTUM COMMUNICATION DTSTART;VALUE=DATE-TIME:20220712T080000Z DTEND;VALUE=DATE-TIME:20220712T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-299@events.sinp.msu.ru DESCRIPTION:Speakers: Айрат Ситдиков (Россия)\n**CONJUG ATE OBJECTS IN QUANTUM COMMUNICATION**\n\nA. S. Sitdikov1\,2\, A.S. Nikiti n1\n1 Kazan State Power Engineering University\, Kazan\, Russia\;\n 2Kazan (Volga region) Federal University\, Kazan\, Russia\n E-mail: airat_vm@ram bler.ru \n\nThe basis of quantum communication is a set of methods for tra nsfer of information encoded with the help of quantum states of elementary particles. The carrier of a unit of quantum information in this case is a qubit - a two-level quantum system (a photon with vertical and horisontal polarizations\, an electron with two basic states\, an ion of a hydrogen molecule H+2 with basic states of electron localization at the first or se cond proton\, etc.). Nuclear objects - nucleons can also be considered as a qubit with two basic states in the isospin space.\n In [1]\, we construc t the algebraic model for the study of few-nucleon systems with non-abelia n superselection rules\, and in [2]\, this model was applied to describe t he transfer of quantum information in the presence of constraints by super selection rules by isospin. Isospin is a non-abelian charge and it is conv enient to describe such charges based on the framework symmetric tensor C* -categories. In [2]\, it was shown that the transmitted number of classica l messages encoded in qubits is equal to the number of coherent superselec tion sectors\, taking into account their multiplicity. Within the framewor k of algebraic model\, superselection sectors can be defined as a class of unitary equivalence of an irreducible endomorphism [ρ] (as an object of the C*-category) of the algebra of observables of the system. \n In the s tudy of the quantum communication\, as well as quantum cryptography\, due to the compensating property\, the conjugate charge also plays an importan t role. In this paper\, a study is carried out of conjugate superselection sectors [ρ]* corresponding to a conjugate object (charge) of the categor y. It is shown that the constructed conjugate object satisfies the require d conjugate equations. Classes of morphisms intertwining super-selection s ectors and certain functions over these morphisms are studied\, which allo w us to identify the properties of the conjugate charge generating certain superselection rules.\n\nhttps://events.sinp.msu.ru/event/8/contributions /299/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/299/ END:VEVENT BEGIN:VEVENT SUMMARY:First results from CLAS12 on $\\pi^+\\pi^-p$ electroproduction in fully exclusive kinematic DTSTART;VALUE=DATE-TIME:20220714T124000Z DTEND;VALUE=DATE-TIME:20220714T125000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-314@events.sinp.msu.ru DESCRIPTION:Speakers: Anna Frolova (MSU\, Faculty of physics)\nStudies of the excited nucleon state spectrum and structure offer unique insight int o the dynamics of strong interaction in the regime of large QCD running co upling\, i.e. the regime of strong QCD. The experimental program at Hall B in Jefferson Laboratory with the CLAS detector using electron and photon beams has provided the first and only available in the world results on electroexcitation amplitudes ($\\gamma_vpN^*$ electrocouplings) for the m ost resonances in the mass range up to 1.8 GeV and photon virtuality up to $Q^2<5.0$ GeV${}^2$. Expertiments with the CLAS12 detector will extend ou r knowledge on the N* spectra\, in particular\, in the mass range above 2. 0 GeV. Studies of $\\pi^+\\pi^-p$ electroproduction represent an importan t part of these efforts. The first results of studying this complex electr oproduction channel will be outlined in the talk.\n \nThe analysis of the 6.5 GeV data set obtained by Run Group-K (RG-K) will be presented. The $\ \pi^+\\pi^-p$ channel’s event selection has been performed in accordance with the RG-K’s general procedures. Using Monte Carlo simulation severa l further selections on different kinematic variables have been developed which allowed to observe resonance structures in the missing mass distribu tions.\n\nThe expected results will allow us to explore the spectrum of hi gh-lying resonances contributing to the $\\pi^+\\pi^-p$ electroproduction including the search for predicted in quark models but still not observed in experiments so-called "missing" resonances and the new expected states of hadron matter\, so-called hybrid baryons with glue as an active structu ral component.\n\nhttps://events.sinp.msu.ru/event/8/contributions/314/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/314/ END:VEVENT BEGIN:VEVENT SUMMARY:YIELDS AND ENERGY DISTRIBUTIONS OF α-PARTICLES IN SPONTANEOUS TER NARY NUCLEAR FISSION DTSTART;VALUE=DATE-TIME:20220712T093000Z DTEND;VALUE=DATE-TIME:20220712T095000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-224@events.sinp.msu.ru DESCRIPTION:Speakers: Larisa Titova (Voronezh State University)\nIn [1\,2] \, a virtual mechanism of ternary fission of the nucleus (A\, Z) was propo sed\, which is considered as a two-stage process\, when at the first stage an α-particle with kinetic energy $T_{\\alpha}$ close to the height of its Coulomb barrier emits from the specified nucleus\, with the formation of a virtual state of the intermediate nucleus (A – 4\, Z – 2)\, which at the second stage is involved in binary fission. Part of the energy of the emitted long-ranged α-particle is taken by reducing the heat of fissi on of the intermediate nucleus (A – 4\, Z – 2) by ($T_{\\alpha}-Q_{\\a lpha}$ )\, where $Q_{\\alpha}$ is the heat of the true α-decay of the nu cleus (A\, Z). The energy distribution $W_{\\alpha f}$ and yield $N_{\\al pha}$ of the α-particles\, taking into account the proximity of the fiss ion widths of the nuclei (A\, Z) and (A – 4\, Z – 2) from the configu ration (0) of these nuclei with a neck of radius $R_{neck}$ between two f ission prefragments\, are defined as\n$$ W_{\\alpha f}= \\frac{1}{2\\pi} \ \frac{(\\Gamma_{\\alpha}^A)^0}{(Q_{\\alpha}^A-T_{\\alpha})^2}=\\omega_{\\a lpha} \\frac{\\hbar c \\sqrt {2 T_{\\alpha}} }{2R_{neck}\\sqrt{\\mu c^2}}P (T_{\\alpha})\; N_{\\alpha}=\\int W_{\\alpha f}(T_{\\alpha})dT_{\\alpha}\, $$\nwhere $(\\Gamma_{\\alpha}^A)^0$ is the width of the decay of the paren t nucleus from the configuration (0)\, $P(T_{\\alpha})$ is the permeabilit y factor of the Coulomb barrier formed by the sum of the nuclear $V_n(r\,\ \theta)$ and Coulomb $V_C(r\,\\theta)$ interaction potentials of α-pa rticle and deformed fission fragments \, $\\omega_{\\alpha}$ is the proba bility of α-particle formation in the parent nucleus\, $\\mu$ is the red uced mass of ternary fission products. Calculating the permeability factor $P(T_{\\alpha})$ of the Coulomb barrier by an α-particle as $P(T_{\\alph a})=exp(- \\frac {2}{\\hbar c }\\int_{R_A}^{R} \\sqrt {2\\mu c^2(V_n(r\, \ \theta)+V_C(r\,\\theta))-T_{\\alpha})} d{r}$\, when using the deformed Cou lomb potential\, Saxon-Woods potential and proximity potential [4] for the nuclear potential\, the energy distributions and yields of α-particles f or $^{248}Cm$\, $^{250}Cf$ and $^{252}Cf$ nuclei are obtained\, which are consistent with the experimental energy distributions and yields of α-par ticles for these nuclei [5 – 6] .\n\n1. S.G. Kadmensky et al. PEPAN 63\, 620 (2022)\n2. S.G. Kadmensky\, L.V. Titova\, D.E. Lyubashevsky Phys. At. Nucl. 83\, 326 (2020)\n3. L.V. Titova\, Bulletin MSU. Ser. 3: Physics. As tronomy. № 5\, 64 (2021)\n4. J. Blocki\, J. Randrup\, W.J. Swiatecki\, C.F. Tsang\, Ann. Phys. (N.Y.) 105\, 427 (1977)\n5. S.Vermote et al.\, Nuc l. Phys. A806\, 1 (2008)\n6. O.Serot\, N.Carjan\, C.Wagemans\, Eur. Phy s. J. A. 8\, 187 (2000)\n\nhttps://events.sinp.msu.ru/event/8/contribution s/224/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/224/ END:VEVENT BEGIN:VEVENT SUMMARY:THEORETICAL APPROACHES ALLOWING SIMULTANEOUS DESCRIPTION OF P-EVE N T-ODD ASYMMETRIES IN REACTIONS OF NUCLEAR FISSION BY POLARIZED NEUTRONS WITH THE EMISSION OF DIFFERENT LIGHT PARTICLES DTSTART;VALUE=DATE-TIME:20220714T103000Z DTEND;VALUE=DATE-TIME:20220714T110000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-609@events.sinp.msu.ru DESCRIPTION:Speakers: Stanislav Kadmensky (Voronezh State University)\nThe cross section for a reaction of nuclear fission induced by polarized neut rons can be represented [1] as the sum of the cross section for the reac tion with unpolarized neutrons\, where is the angular distribution of su ch light particles p as prescission -particles and evaporative neutrons a nd -quanta\, and the cross section \, which depends linearly on the pola rization vector and is expressed in terms of the sum of the components \, which are even and odd with respect to the transformation . These compon ents can be associated with quantities . The experimental values of these quantities are found [1] by the formula through the experimental value s of the asymmetry coefficients (1) expressed through the experimental p article count rates p in coincidence with light fission fragments and fo und in [2\, 3]. To find the theoretical values of the quantities\, formu la (2) can be used\, which takes into account the rotation of the direc tion of emission of the particle p with respect to the direction of the em ission of a light fission fragment by an angle under the action of the C oriolis interaction associated with the rotation of the fissile system (FS ) around the axis\, perpendicular to its axis of symmetry. Due to the pari ty of the angular distributions in the case of evaporation neutrons and -quanta\, the value is \, and the value is . In the semi-classical appr oach [2] the angles of rotation are calculated using the method of traje ctory calculations and can only take positive values. The experimental and theoretical values of the quantities turn out to be in reasonable agree ment in the case of any p particles for the 235U\, 239Pu\, and 241Pu nucle i. At the same time\, for the 233U nucleus\, it is possible to agree [2] t he experimental and theoretical values of the coefficients in the case of -particles by adding to the coefficient (1) the constant associated [2] with the violation of the axial symmetry of the FS due to its transver se vibrations\, while there is a complete mismatch in the signs of quantit ies for evaporation neutrons and -quanta. In the quantum mechanical app roach [1]\, in contrast to the semiclassical approach\, the angle of rotat ion can have any sign due to interference effects. Due to the complexity of calculating such angles in the quantum approach\, they will be the max imum likelihood method. Then\, in this approach\, it is possible to agree on the experimental and theoretical values both for prescission -partic les and evaporation neutrons and -quanta for all target nuclei\, taking i nto account the fact that the angle has negative values in the case of t he 233U nucleus. In the case of -particles for the 233U nucleus\, the spe cified agreement for the value is achieved by adding a constant to (2) \, the appearance of which can be associated [2] with the violation of the axial symmetry of the FS\, when its transverse oscillations are taken int o account.\n\nhttps://events.sinp.msu.ru/event/8/contributions/609/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/609/ END:VEVENT BEGIN:VEVENT SUMMARY:212Pb: Production and Applications DTSTART;VALUE=DATE-TIME:20220715T124000Z DTEND;VALUE=DATE-TIME:20220715T125000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-346@events.sinp.msu.ru DESCRIPTION:Speakers: Konstantin Kokov (NRC Kurchatov Institute)\nOver the last twenty years targeted alpha therapy has demonstrated its high effici ency in treating various oncological diseases. 212Pb\, with its convenient half-life of 10.64 h\, and its daughter alpha-emitter short-lived 212Bi ( T1/2 = 1 h)\, provides the possibility for the synthesis and purification of radiopharmaceuticals with minimum loss of radioactivity during preparat ion. It can be milked from a radionuclide generator via various techniques .\nThe main approaches applied for this purpose are considered and describ ed\, including chromatographic and other methods to separate 212Pb from it s parent radionuclide. The results of preclinical studies with an estimati on of therapeutic and tolerant doses as well as recently initiated clinica l trials are presented.\n\nhttps://events.sinp.msu.ru/event/8/contribution s/346/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/346/ END:VEVENT BEGIN:VEVENT SUMMARY:Femtoscopic probes in collisions of small and large systems from S TAR DTSTART;VALUE=DATE-TIME:20220712T074000Z DTEND;VALUE=DATE-TIME:20220712T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-303@events.sinp.msu.ru DESCRIPTION:Speakers: Grigory Nigmatkulov ()\nOne of the goals of ion-ion collision studies is to understand mechanism of particle production and re veal the properties of particle-emitting source. A quark-gluon matter\, pr oduced in collisions of relativistic heavy ions at high energies ($\\sqrt{ s_{NN}}\\ge$62.4 GeV)\, undergoes a rapid transition to the hadronic matte r known as crossover [1]. At lower collision energies it is expected that the phase transition will be of the first order [2] that also implies an e xistence of the critical point [3]. The change of phase transition type ma y be imprinted on the spatial and temporal properties of the particle-emit ting source. The correlation femtoscopy method\, based on the measurement of two-particle momentum correlations arising due to the quantum statistic al correlations\, is designed to access space-time extents of the fireball [4]. In addition to the large collision systems\, it is also important to obtain the information about the particle production mechanism in small c ollision systems.\n \nIn this talk\, we report the results of the two-part icle femtoscopic correlations measured in collisions of small and large sy stems (including p+Au and Au+Au) from the STAR experiment at RHIC. The phy sics implications will be discussed.\n\nReferences:\n[1] Abdallah M.S.\, e t al. Measurement of the sixth-order cumulant of net-proton multiplicity d istributions in Au+Au collisions at in Au+Au collisions at √sNN = 27\, 5 4.4\, and 200 GeV at RHIC\, Phys. Rev. Lett. - 2021. - V. 127. - P. 262301 .\n[2] Ejiri\, S. Canonical partition function and finite density phase tr ansition in lattice QCD\, Phys. Rev. D. - 2008. - V. 78. - P. 074507.\n[3] Stephanov\, M. QCD phase diagram and the critical point\, Prog. Theor. Ph ys. Suppl. - 2004. - V. 153. - P. 139.\n[4] Lisa M.A. et al. Femtoscopy in relativistic heavy ion collisions: two decades of progress\, Annu. Rev. N ucl. Part. Sci. – 2005. – V.55. – P.357.\n\nhttps://events.sinp.msu. ru/event/8/contributions/303/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/303/ END:VEVENT BEGIN:VEVENT SUMMARY:4 MeV ENERGY PROTONS FOCUSING BY DIELECTRIC CAPILLARY IN THE AIR DTSTART;VALUE=DATE-TIME:20220715T130000Z DTEND;VALUE=DATE-TIME:20220715T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-296@events.sinp.msu.ru DESCRIPTION:Speakers: K. E. Kantserova (Sarov Physics and Technology Insti tute of the National Research Nuclear University MEPhI)\, I. A. Karpov (Ru ssian Federal Nuclear Center – All-Russian Research Institute of Experim ental Physics)\nA classical method of the charge particle microbeams forma tion is based on magnetic or electrostatic ion focusing with preliminary i nput beam collimation. An alternative method of the microbeams formation i s using of the capillary. New systems of transformation\, control and tran sfer of the charged particle beams can be developed on a basis of this eff ect\, particularly for obtaining the micron and submicron-sized beams whic h are interested for elemental and structure analysis\, nanolithography\, medical and biological applications\, radiation technologies [1-3]. This m ethod is the easiest and cheapest one for using in comparing with the exis ting micron radiation methods.\nExperimental studies of transfer and focus ing processes of the 4 MeV initial energy proton beam are carried out. For proton beam transportation into the air the SterilleFemtotips 11 dielectr ic capillary with 58 mm length (din = 1\,5 mm\, dout = 92 ± 3 mu-m\; din = 1\,5 mm\, dout = 0\,5 ± 0\,2 mu-m) are used. EGP-10 accelerator [4] is used as a proton source.\nThe optimal distances from capillary to research object are determined as well as time when the least divergence of the be am is observed. Proton energetic spectra are obtained after passing of the protons through the capillary with and without the conductive layer. The method of the beam size determination using the semiconductor detector is proposed. Proton beam sizes at the beam ejection into the air are determin ed.\nRecommendations of formation of proton micron and submicron-sized bea m at EGP-10 accelerator are made basing on obtained experimental data. \n\ n1. А.S. Kamyshan et al\, Vestnik BGU (2007).\n2. G.U.L.Nagy et al.\, Nuc lear Inst. and Methods in Physics Research B. (2018).\n3. S. Wongke et al. \, Surface & Coatings Technology 399 (2020).\n4. S.N. Abramovich\, VANT Se r. Fiz.Yad.Reak. TIYaS-XI. 4. (1997).\n\nhttps://events.sinp.msu.ru/event/ 8/contributions/296/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/296/ END:VEVENT BEGIN:VEVENT SUMMARY:A method of calculating the electric field map of triple GEM detec tor for the first physics run of BM@N experiment DTSTART;VALUE=DATE-TIME:20220714T151000Z DTEND;VALUE=DATE-TIME:20220714T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-493@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitry Baranov ()\nBM@N (Baryonic Matter at Nuclotro n) [1] is the first stage experiment which is carried out at the NICA (Nu clotron-based Ion Collider fAсility) accelerator complex [2] located at J oint Institute for Nuclear Research in Dubna. The main purpose of the expe riment is to study dense baryonic matter as a product of heavy ion collisi ons. \n\nThis work concentrates on the features of simulation for the co re BM@N tracking detector based on triple GEM (Gas Electron Multiplier) sy stem [3]. In particular\, we will describe in detail the preparation of el ectric field map needed for detailed simulation of this detector. We will review the main steps of the field map preparation based on using special software such as GMSH [4]\, Elmer [5] and Garfield++ [6]: toolkits for fin ite element mesh generation\, electric field calculation and simulation of physics processes in gaseous and semiconductor detectors. \n\nOur computa tions are based on the particular conditions and properties of GEM chamber s used in the first physics experimental run that scheduled to be performe d in 2022. The principal difference of the future run from the previous is in their purposes. The previous runs\, being focused on testing detector facilities\, were mainly technical but the new ones are aimed to get some physics results that had been claimed in the scientific program of the BM @N experiment.\n\n1. BM@N Conceptual Design Report: http://nica.jinr.ru/fi les/BM@N/BMN_CDR.pdf\n2. NICA White Paper. http://theor0.jinr.ru/twiki-cgi /view/NICA/NICAWhitePaper\n3. D. Baranov et al.\, JINST\, 12\, C06041 (201 7)\n4. GMSH resource: http://gmsh.info\n5. Elemer resource: http://www.csc .fi/fi/web/elmer\n6. Garfield++ resource: https://gitlab.cern.ch/garfield/ garfieldpp\n\nhttps://events.sinp.msu.ru/event/8/contributions/493/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/493/ END:VEVENT BEGIN:VEVENT SUMMARY:DETERMINATION OF THE ASYMPTOTIC NORMALIZATION COEFFICIENTS FOR $^7 $Li+p→$^8$Be FROM THE PERIPHERAL DIRECT CAPTURE $^7$Li(p\,γ)$^8$Be REA CTION AND THE ASTROPHYSICAL S FACTOR AT LOW ENERGIES DTSTART;VALUE=DATE-TIME:20220713T072000Z DTEND;VALUE=DATE-TIME:20220713T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-304@events.sinp.msu.ru DESCRIPTION:Speakers: Kakhramon Tursunmakhatov (Institute of Nuclear Physi cs\, Academy Sciences of Uzbekistan)\nThe reaction $^7$Li(p\,$\\gamma$)$^8 $Be is part of the pp-chain in the Sun\, leading to the formation of $^8$ Be. In the present work\, the analysis of the experimental astrophysical S factors S$^{exp}$(E) for the nuclear-astrophysical $^7$Li(p\,$\\gamma$)$^ 8$Be reaction in the off-resonance energy region measured in [1] are perfo rmed within the modified two body potential approach [2]\, and assuming t hat\, in this energy region ($E\\le200$ keV) radiative proton capture by $ ^7$Li nucleus is direct.\nThe method involves two additional conditions th at verify the peripheral character of the direct radiative capture reactio n $^7$Li(p\,γ)$^8$Be in the off-resonance energy region: 1) $R(E\,b)=cons t$ for arbitrary variation of the single particle asymptotic normalization coefficient b for each fixed experimental value of the energy $E$\; 2) th e ratio $C_{p^7Li}^2=S^{exp}(E)⁄R(E\,b)$ must not depend neither from $b $ and nor from the energy $E$ for each experimental point of the energy ($ E$=98.3\, 147.6 and 198.3 keV)\, where $R(E\,b)=S^{(sp)}(E)⁄b^2$ in wh ich $S^{(sp)}(E)$ is a single-particle astrophysical $S$ factor. Fulfillm ent of the conditions above\, it allows to determine “experimental” va lues of ANCs $C_{p^7Li}^2 [=(C_{p^7Li}^{exp})^2]$ for ground and first exc ited states of $^8$Be with their uncertainty. The obtained values of ANCs $(C_{p^7Li}^{exp})^2$ can be used in the expression $S(E)=(C_{p^7Li}^{exp })^2 R(E\,b)$ for obtaining the extrapolated values of $S(E)$ and its unce rtainties within the energy range $E< 98.3$ keV\, including $E=0$.\nVariat ion of values of the parameters of the Woods-Saxon potential $r_0$ and $a$ is done in the wide range ($1.1\\le r_0 \\le 1.4$ fm\, $0.59\\le a \\le 0 .72$ fm) and it is shown that the reaction is strongly peripheral. As a re sult\, the new values of ANCs $(C_{p^7Li}^{exp})^2$ with their uncertainti es for $^7$Li+p→$^8$Be were obtained. The obtained values of ANCs are us ed for calculation of the astrophysical S factor of the radiative resonanc e capture $^7$Li(p\,$\\gamma$)$^8$Be reaction within the modified R-matrix method [3]. \n\n1. D. Zahnow\, C.Angulo\, C.Rolfs\, S.Schmidt\, and et al .\, Z. Phys. A 351\, 229-236 (1995).\n2. S.B. Igamov and R.Yarmukhamedov\, Nucl. Phys. A 673\, 509 (2007).\n3. K.I. Tursunmakhatov\, R.Yarmukhamedov and S.B.Igamov\, EPJ Web of Conf. 227\, 02016 (2019).\n\nhttps://events.s inp.msu.ru/event/8/contributions/304/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/304/ END:VEVENT BEGIN:VEVENT SUMMARY:Fission modes in 238Np populated by 6Li+232Th DTSTART;VALUE=DATE-TIME:20220712T080000Z DTEND;VALUE=DATE-TIME:20220712T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-227@events.sinp.msu.ru DESCRIPTION:Speakers: Tathagata Banerjee (Joint Institute for Nuclear Rese arch\, Dubna\, Russia)\nThe mass-total kinetic energy(M-TKED) of fission f ragments of the reaction 6Li+232Th were measured at two laboratory energie s Elab = 28.5 and 40 MeV [1] using the CORSET set up at the Flerov Laborat ory of Nuclear Reaction. The transfer induced fission and/or the breakup o f 6Li mainly into α and d clusters contributes to the incomplete fusion i n this reaction. The binary events within the gate of 180±3.5 degree in t he fission fragment folding angle distribution have only been considered d iscarding the incomplete fusion events\, for multi-modal analysis.\n\nTwo dimensional M-TKEDs of the binary fragments of 6Li+232Th\, have been descr ibed by the multi-modal random neck rupture (MM-RNR) model [3]. Three mode s were necessary to fit the data properly. Channel probabilities and the c haracteristics of different fission modes are obtained and discussed. The average kinetic energy release in fission obtained from Viola systematic [4] matches well with that of the Standard 2 mode\, but not with that of b road liquid drop like Superlong mode. This is associated with the decrease of the total kinetic energy associated with asymmetric fission with incre asing excitation [5\, 6] due to fading out of shell effects at high excita tion energies. The slope of asymmetric to symmetric fission yields (when p lotted against the excitation energy) of 6Li+232Th is found to be similar to that of previously reported 18O+208Pb.\n\n1. I. M. Itkis et al.\, Phys. Lett. B640\, 23 (2006)..\n2. E. M. Kozulin et al.\, Instrum. Exp. Tech. 5 1\, 44 (2008).\n3. U. Brosa\, S. Grossmann and A. Müller\, Phys. Rep. 197 \, 167 (1990).\n4. V. E. Viola Jr.\, Nucl. Data Sheets A1\, 391 (1966)\; V . E. Viola\, K. Kwiatkowski\, and M. Walker\, Phys. Rev. C 31\, 1550 (1985 ).\n5. A. Pica et al.\, Phys. Rev. C 102\, 064612 (2020).\n6. V. Yu. Denis ov\, I. Yu. Sedykh\, Phys. Lett. B 824\, 136814 (2022).\n\nhttps://events. sinp.msu.ru/event/8/contributions/227/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/227/ END:VEVENT BEGIN:VEVENT SUMMARY:EMISSION NANOSTRUCTURE SOURCES IN MULTI-WIRE PROPORTIONAL CHAMBERS WORKING AT LHC DTSTART;VALUE=DATE-TIME:20220715T143000Z DTEND;VALUE=DATE-TIME:20220715T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-306@events.sinp.msu.ru DESCRIPTION:Speakers: G. E. Gavrilov (National Research Center “Kurchato v institute”\, PNPI)\nThe results of research of the origin of the spont aneous electron emission sources generation in multi-wire proportional cha mbers (MWPC) at LHCb experiment in Large Hadron Collider (LHC) [1] are pre sented. Formation of dotted carbon nanostructures on cathode copper foil w ith sp1\, sp2 and sp3 hybridization of electron levels is shown up as a re sult of complex research by atomic-force microscopy (AFM)\, elemental anal ysis and Raman spectroscopy methods of cathode samples from MWPC demounted from facility. Carbon nanostructures presence in the area of cathode spon taneous emission currents generation is proved by effect of resistive shif t in current-voltage characteristic (I-V curve) measurements by AFM method s. Moreover according to AFM morphology of the surface of these structures resembles the results of research of nanocarbon formation derived under l aboratory conditions at high temperature in vacuo.\n Frenkel-Pool model [3 \,4] is chosen for analysis of the emission ability of the cathode formati ons by hysteresis I-V curve due to absence of the significant morphologica l defects increasing the aspect ratio on the cathode surface. According to this model electrons are emitted by electrically active impure centers in cathode carbonized layer at reaching the activation energy (Ео). Estima tion based on obtained I-V curves shows that Ео about 0.05 – 0.06 eV f or MWPC cathode samples.\n\n1. F.P. Albicocco et al.\, Journal of Instrume ntation. 14. 11031 (2019)\n2. A. Dzyuba\, G. Gavrilov\, I. Karpov\, M. Buz overya et al.\, Book of abstracts 71 Int. Conf. “Nucleus-2021”. 165 (2 021).\n3. А.I. Ivanov et al.\, Fizika I Tekhnika Poluprovodnikov. 51. 135 7 (2017).\n4. I.V. Kurkina et al.\, J. Phys. D. Appl. Phys. 49. Art.no 095 303 (2016).\n\nhttps://events.sinp.msu.ru/event/8/contributions/306/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/306/ END:VEVENT BEGIN:VEVENT SUMMARY:A METHOD OF GAMMA-SPECTRUM PROCESSING BASED ON EXPONENTIAL SMOOTHI NG DTSTART;VALUE=DATE-TIME:20220713T074000Z DTEND;VALUE=DATE-TIME:20220713T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-307@events.sinp.msu.ru DESCRIPTION:Speakers: Leonid Minin (Voronezh State University)\nThis paper proposes a new method to smooth out the spectral gamma-lines. Calibration samples supplied with the gamma spectrometer containing radioactive isoto pes Eu152\, Co60 and Na22were used as test objects. The position\, width a nd area of the peaks obtained as a result of spectrometry characterize the energy and intensity of gamma radiation. As is known\, these peaks are su perimposed on a continuous spectrum of energy resulting from secondary eff ects and background radiation [1].\nThe smoothing procedure was performed using interpolation by the system of uniform shifts of the Gaussian functi on [2]:\n \nSince the standard interpolation procedure becomes highly unst able with increasing variance [3]\, regularization was applied. Results of the simulation indicate that the proposed method for filtering spectral l ines does not introduce distortions into the original signal. On the other hand\, the representation of spectral lines as a linear combination of Ga ussian function shifts provides an additional opportunity for analytical c alculations with a given signal during subsequent more detailed processing .\nIt is not necessary to pick the form of the peaks because they are repr esented as a sum of several shifts of the Gauss function with various ampl itudes. As a result\, a more versatile peak detection system has been obta ined that does not require serious changes from one type of signal to anot her. A feature of the proposed method is that the peak areas for the origi nal and smoothed signal may differ by around 10%\, but with a significant change in the variance of the regularization parameter the area change s are small\, which ensures the calculation robustness.\n\n1. R. Gordon Gi lmore .Practical Gamma-ray Spectrometry.2nd Edition. –Nuclear Training Services Ltd\, John Wiley &Sons \, Warrington\, UK\, 2008.\n2. V.Maz'ya\, G. Schmidt\, AMS Mathematical Surveys and Monographs\, 141\, 350 (2007).\ n3. E.A.Kiselev\, L.A.Minin\, I.Y.Novikov and S.M.Sitnik\, Math. Notes 96\ , 228\, (2014).\n\nhttps://events.sinp.msu.ru/event/8/contributions/307/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/307/ END:VEVENT BEGIN:VEVENT SUMMARY:Cross section of neutrino absorption by 82Se nuclei DTSTART;VALUE=DATE-TIME:20220715T082000Z DTEND;VALUE=DATE-TIME:20220715T084000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-331@events.sinp.msu.ru DESCRIPTION:Speakers: Sergei Semenov (Russian Research Centre "Kurchatov I nstitute")\nSelenium-82 is a perspective isotope for neutrino investigatio ns. Recently in experiments\, produced with the help of NEMO-3 detector [ 1]\, which is composed of a tracker and a calorimeter\, capable to reconst ruct the full topology of  processes and measurements\, performed at CUPID-0 setup [2]\, based on Zn82Se scintillating crystals\, operated as cryogenic bolometers\, nuclear mechanism of 82Se 22-decay have be en examined. It was shown\, that contribution of the single lowest excited 1+-level of intermediate nucleus 82Br dominates in the transition amplitu de. It should be noted that for 82Se the quantum numbers of intermediate n ucleus 82Br ground state are 5-\, so transition via this state is strongly suppressed. Contribution of excited 1+ -states to 22-transition am plitude was considered in [3]. \n The lowest excited 1+-level of 82Br\, E x=75 keV\, and corresponding Gamow-Teller strength have been determined in a high-resolution 82Se(3He\,t) 82Br charge-exchange experiment [4]. Low v alue of threshold for neutrino absorption reaction together with considera ble magnitude of transition strength to 75 keV (1+) state make 82Se to be interesting object both for solar neutrino detection and for measurements\ , aimed at investigation of new physics in calibration experiments. \n The cross sections of absorption by 82Se nucleus of neutrinos\, produced by a rtificial sources 51Cr\, 37Ar\, 65Zn are calculated. The parameters of exp erimental setup on the base 82Se for searching of new types of neutrino ar e discussed. \n\n\n1. R. Arnold et al \, Eur. J. Phys. 78\, 821 (2018)\n2. O. Azzolini et al\, Phys. Rev. Lett. 123\, 262501 (2019)\n3. S.V. Semenov \, AIP Conf. Proc. 942\, 67 (2007)\n4. D. Frekers et al\, Phys. Rev. C 94\ , 014614 (2016)\n\nhttps://events.sinp.msu.ru/event/8/contributions/331/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/331/ END:VEVENT BEGIN:VEVENT SUMMARY:PHOTOFISSION OF 238U IN THE ENERGIES RANGE OF GIANT DIPOLE RESONAN CE DTSTART;VALUE=DATE-TIME:20220712T074000Z DTEND;VALUE=DATE-TIME:20220712T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-308@events.sinp.msu.ru DESCRIPTION:Speakers: Omar Albaghdadi ()\nThe yields and average cross sec tions of the photonuclear reactions $^{238}U(\\gamma\,n)$ and $^{238}U(\\g amma\,F)$ are measured at a maximum bremsstrahlung energy of 55 $MeV$. Bas ed on the analysis of the residual activity spectra of the products of the $^{238}U(\\gamma\,F)$ photofission reaction\, the cumulative yields were measured for about 40 mass chains. The cross sections for the reactions $^ {238}U(\\gamma\,n)$ and $^{238}U(\\gamma\,F)$ are estimated and compared w ith the results of experiments on quasi-monochromatic beams\, estimated cr oss sections\, and calculations using the TALYS program. The post-neutron mass yield distribution of $^{238}U(\\gamma\,F)$ photofission has been obt ained (fig. 1). The behavior of the symmetric and asymmetric modes of phot ofission is analyzed as a function of the average excitation energy of the fissile nucleus.\n\nFig. 1. Approximation by five Gaussian functions of the total mass distribution $Y_{M}(A)$ of products formed as a result of $ ^{238}U$ photofission induced by bremsstrahlung photons at an electron acc elerator energy of 55 $MeV$.\n\nhttps://events.sinp.msu.ru/event/8/contrib utions/308/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/308/ END:VEVENT BEGIN:VEVENT SUMMARY:Computer Simulation of PFN Detector DTSTART;VALUE=DATE-TIME:20220713T080000Z DTEND;VALUE=DATE-TIME:20220713T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-309@events.sinp.msu.ru DESCRIPTION:Speakers: Olga Sidorova (Joint Institute for Nuclear Research) \nPFN emission of 235U(n\,f) reaction are under investigation in JINR for last 20 year. The recent achievements in experimental apparatus simulation are the subject of this presentation. The object of simulation is prompt fission neutron (PFN) detector used for resonance neutron induced fission of U-235. The neutron source was IREN facility and double ionization chamb er (DIC) with Frisch grids was used for fission fragment spectroscopy. The PFN detector was multi detector system consisted of 32 BC501 scintillatio n liquid filled modules from the Sionix (Netherlands) company. Detectors were located on the sphere surface with 50 cm radius. Double Frisch gridde d ionization chamber\, used as fission spectrometer at the same time gener ated trigger signal for PFN registration apparatus. For each fission event the following simulated information was recorded: correlated fission frag ments time mark\, emission angle in respect to the selected coordinate fra mes along with the pulse heights and shapes of neutron detector signals. M ultiple neutron scattering and the cross-talks were taken into account in order to evaluate contribution of those effects in the final results.\n\nh ttps://events.sinp.msu.ru/event/8/contributions/309/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/309/ END:VEVENT BEGIN:VEVENT SUMMARY:Computer modeling of ttH Higgs boson production process in the fra mework of MSSM model DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-612@events.sinp.msu.ru DESCRIPTION:Speakers: Tetiana Obikhod ()\nThe properties of the MSSM Higgs bosons\, h and H\, through the comparison with the actual experimental da ta were studied. For such appropriate investigation ATLAS data of the cro ss sections of Higgs boson decay into b-quarks were considered. In the fra mework of theoretical research of modeled process the tree-level Higgs sec tor described by two parameters M$_A$ and tan$\\beta$ was used and their o ptimal values were found. Using the restricted parameter space we calculat ed cross sections of associated tth(H) production at 13 and 14 TeV\, the c orresponding kinematical cuts\, mass distributions and Branching Ratios of h and H decays into bb quark pair.\n\nhttps://events.sinp.msu.ru/event/8/ contributions/612/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/612/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of the timing resolution of scintillation detectors sa mples of a future time-of-flight neutron detector for the BM@N experiment DTSTART;VALUE=DATE-TIME:20220715T120000Z DTEND;VALUE=DATE-TIME:20220715T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-574@events.sinp.msu.ru DESCRIPTION:Speakers: Aleksandr Makhnev (INR RAS)\nA new compact time-of-f light neutron detector is planned to be developed and produced. This detec tor will identify and measure the energies of neutrons produced in nucleus -nucleus collisions at energies up to 4 AGeV in the BM@N experiment at the Nuclotron (JINR\, Dubna). The detector will be used to measure neutron yi elds and azimuthal neutron flows\, which should be sensitive to the equati on of state of dense nuclear matter and to the energy of symmetry\, as it is shown in various theoretical models. \nThe novelty of the proposed neut ron detector is the usage of small scintillators with an area of about 10- 20 cm2 and a thickness of 25 mm as sensitive elements for the active layer s of the detector. One silicon multipixel photon counter with a sensitive area of 6 x 6 mm2 is proposed to perform light readout from one of the sid es of each of these scintillators. To achieve the required neutron energy resolution\, the detector timing resolution of 100-150 ps is required.\nTh e concept of the proposed time-of-flight neutron detector\, the possibilit ies of its layout on the BM@N\, as well as the results of the timing resol ution measurements of the samples of scintillation detectors on cosmic muo ns for different types of scintillators\, sizes\, reflectors and photon co unters are discussed.\n\nhttps://events.sinp.msu.ru/event/8/contributions/ 574/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/574/ END:VEVENT BEGIN:VEVENT SUMMARY:The experimental research of cyclotron DC-280 work DTSTART;VALUE=DATE-TIME:20220715T080000Z DTEND;VALUE=DATE-TIME:20220715T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-312@events.sinp.msu.ru DESCRIPTION:Speakers: Vasilii Semin ()\nThe DC280 is the high current cycl otron with design beam intensities up to 10 pμA for ions with energy from 4 to 8 MeV/nucleon. It was developed and created at the FLNR JINR. The fi rst was extracted from the cyclotron on January 17\, 2019. Experiments on acceleration of 84Kr\, 12C\, 40Ar\, 48Ca\, 48Ti\, 52Cr and 54Cr beams prod uction were carried out. The following intensities of accelerated beam hav e been achieved: 1.43 pμA for 84Kr+14\; 10 pμA for 12C+2\; 9\,2 pμA for 40Ar+7\; 7\,7 pμA for 48Ca+7. The long time experiments were done in 202 0-2022. The features of work of High Voltage axial injection systems\, bun cher systems and Flat-top systems were explored. The work of accelerator w as stable and high efficiency. The total acceleration efficiency from ion source to transport channel was about 46%.\n\nhttps://events.sinp.msu.ru/e vent/8/contributions/312/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/312/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent results of the KamLAND-Zen experiment DTSTART;VALUE=DATE-TIME:20220714T120000Z DTEND;VALUE=DATE-TIME:20220714T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-511@events.sinp.msu.ru DESCRIPTION:Speakers: Alexandre Kozlov (MEPhI)\nThe KamLAND-Zen experiment provided new stringent constraints on the neutrinoless double-beta (0νβ β) decay half-life in Xe-136 using a xenon-loaded liquid scintillator. I mproved search was based on an upgraded detector with almost double the am ount of enriched xenon and an ultra-low radioactivity container\, correspo nding to an exposure of 970 kg yr of Xe-136. This new data provides valuab le insight into backgrounds\, especially from cosmic muon spallation of xe non\, and has required the use of novel background rejection techniques. W e obtained a lower limit for the 0νββ decay half-life of T1/2 > 2.3 × 10^26 yr at 90% C.L.\, corresponding to upper limits on the effective Majo rana neutrino mass of 36 – 156 meV using commonly adopted nuclear matrix element calculations.\n\nhttps://events.sinp.msu.ru/event/8/contributions /511/ LOCATION: Физический ф-т\, 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/511/ END:VEVENT BEGIN:VEVENT SUMMARY:Is Electroweak Interaction – a Kind of Cosmological Lambda Term in Maintaining Nuclear Existence and Stability? DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-613@events.sinp.msu.ru DESCRIPTION:Speakers: Seshavatharam UVS (I-SERVE\, Survey no-42\, Hitech c ity\, Hyderabad-84\,Telangana\, India)\nConsidering the interaction scheme associated with Up quarks\, Down quarks and pions and interaction scheme associated with electroweak bosons\, we have developed a new model of nucl eus. We would like to emphasize the point that atomic nucleus cannot exist without the support of electroweak interaction. Clearly speaking\, analog ous to the cosmological Lambda term\, electroweak interaction helps in mai ntaining the existence of atomic nucleus without collapsing due to strong interaction. Interesting points to be noted are: 1) Up quark and Down quar k play a vital role in understanding nuclear structure. 2) Mass ratio of p ions and weak bosons is 0.0016 and it is approximately twice the product o f Fine structure ratio and strong coupling constant. 3) Twice the proton n umber and the coefficient 0.0016 play a significant role in understanding nuclear stability line. 4) Currently believed harmonic oscillator coupling and spin-orbit coupling seem to be a natural manifestation of Up and Down quark arrangement. 5) Number range associated with harmonic oscillator co upling and spin-orbit coupling can be considered as a representation of ma ss number range of a proton number having magic behaviour. 6) Coefficient of proportionality being 0.0016\, number of free nucleons increases with h alf the sum of squared number of protons and squared number of nucleons. 7 ) Increasing number of free nucleons\, increasing nuclear radii and increa sing asymmetry about stable mass number play an important role in reducing nuclear binding energy. 8) Nuclear binding energy can be addressed with f our simple terms and single energy coefficient. 9) Unified nuclear binding energy coefficient is associated with the average rest energy of 3 Up qua rks and 3 Down quarks. 10) Nuclear stability line\, proton drip lines and neutron drip lines can be understood in a unified approach.\n\nhttps://eve nts.sinp.msu.ru/event/8/contributions/613/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/613/ END:VEVENT BEGIN:VEVENT SUMMARY:ANALYTIC CONTINUATION OF EXPERIMENTAL DATA ON SCATTERING AND REACT ION PROCESSES AS A WAY TO OBTAIN INFORMATION ON CHARACTERISTICS OF BOUND N UCLEAR STATES DTSTART;VALUE=DATE-TIME:20220711T145000Z DTEND;VALUE=DATE-TIME:20220711T152500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-593@events.sinp.msu.ru DESCRIPTION:Speakers: Leonid Blokhintsev (Skobeltsyn Institute of Nuclear Physics\, Lomonosov Moscow State University)\nAsymptotic normalization coe fficients (ANC) determine the asymptotic behavior of nuclear wave function s in binary channels at distances between fragments exceeding the radius o f nuclear interaction (see the recent review paper [1] and references ther ein). ANCs are of particular importance for nuclear astrophysics. They det ermine the overall normalization of cross sections of radiative capture re actions at astrophysical energies [2]. In terms of ANCs\, the cross sectio ns of peripheral nuclear transfer reactions are parameterized. ANCs should be included in the number of important nuclear characteristics along with such quantities as binding energies\, probabilities of electromagnetic tr ansitions\, etc.\nUnlike binding energies\, ANCs cannot be directly measur ed. In the present work\, we discuss two ways to obtain information about ANCs by analytic continuation of experimental data. The first method is ba sed on the analytic continuation of the experimental differential cross se ctions (DCS) of nuclear transfer reactions in the variable z = cos θ\, wh ere θ is the scattering angle in the center-of-mass system. The idea of t he method goes back to the work of G.F. Chew [3]\, in which it was stated that the extrapolation in cos θ of the DCS of the elastic NN scattering t o the pole corresponding to the exchanged virtual pion can be used to dete rmine the pion-nucleon coupling constant. When applying this method\, it i s very important to take into account the Coulomb interaction in the initi al\, final and intermediate states [4]. \nThe second approach uses the ana lytic continuation in energy of the partial-wave amplitudes of elastic sca ttering\, determined from the phase-shift analysis of experimental data\, to the pole point located in the nonphysical region of negative energies. In this way\, ANCs were determined for a number of light nuclei. As an exa mple\, we present the recently obtained by us average values of the ANCs C (Jπ) for the virtual decay of the excited bound states of the 16O nucleus \, which are important for nuclear astrophysics: 16O*(Jπ)→α+12C(g.s.). We got: C(0+) = 1.01·103 fm-1/2\; C(3–) = 3.53·102 fm-1/2\; C(2+) = 1 .57·105 fm-1/2\; C(1–) = 2.55·1014 fm-1/2.\n\n1. A. M. Mukhamedzhanov and L. D. Blokhintsev\, Eur. Phys. J. A 58\, 29 (2022).\n2. A. M. Mukhamed zhanov and N. K. Timofeyuk\, Sov. J. Nucl. Phys. 51\, 679 (1990).\n3. G. F . Chew\, Phys. Rev. 112\, 1380 (1958).\n4. L. D. Blokhintsev and D. A. Sa vin\, Phys. At. Nucl.\, 85\, 154 (2022).\n\nhttps://events.sinp.msu.ru/ev ent/8/contributions/593/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/593/ END:VEVENT BEGIN:VEVENT SUMMARY:Test experiment to determine the time distribution of the backgrou nd between MMF accelerator pulses on the RADEX channel. DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-313@events.sinp.msu.ru DESCRIPTION:Speakers: Michael Mordovskoy (INR RAS)\nTo determine the possi bility of studying various cluster structures (for example\, [1]) in light nuclei on the RADEX neutron channel of the MMF INR RAS accelerator\, it i s necessary to carry out a study to measure the background between acceler ator pulses (the level\, composition and time distribution of it). For exa mple\, when searching for the cluster structure of α-4n-α and 8Be-4n in the highly-excited state of 12Be*\, it is necessary to detect charged part icles from the b-decay of 12Be* during its formation in the n + 13C reacti on in the intervals between pulses of cascade neutrons [2]. This will be p ossible with a certain background level and its time distribution.\nThe fi rst experiments of this kind were carried out on the RADEX MMF channel at several pulse durations and frequencies from 1 to 50 Hz. Between the pulse s of the accelerator\, the spectra and time distribution of gamma quanta\, neutrons\, and b-particles were measured. The first measurement results a re presented.\n\n1. Marque's F.M. \, et al. // Phys.Rev. C. 65\, 044006 (2 002).\n2. A. Kasparov\, M. Mordovskoy\, V. Skorkin // “Nucleus-2021”\, Book of Abstracts\, 317 \n (2021).\n\nhttps://events.sinp.msu.ru/event /8/contributions/313/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/313/ END:VEVENT BEGIN:VEVENT SUMMARY:THE DOSE CALCULATION BASED ON CBCT IMAGES FOR LONG TARGET CASES: A PHANTOM STUDY DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-315@events.sinp.msu.ru DESCRIPTION:Speakers: Anastasiya Lisovskaya (Dmitry Rogachev National Medi cal Research Center Of Pediatric Hematology\, Oncology and Immunology\, Ra diotherapy Department)\nCone-Beam Computed Tomography (CBCT) images have d ifferent normalization of the Hounsfield Units (HU)\, artifacts and a limi ted field of view. That is all creates difficulties for the CBCT dose reca lculation. In this study we assess the possibility of using several CBCT s ets for replanning or further dose evaluation for long target cases.\nDose s were calculated in the anthropomorphic phantom CIRS ATOM ® using Monte- Carlo algorithm in MIM SureCalc® MonteCarlo (Cleveland\, USA). Planned do se at the CT images (rCT) was considered as reference\, doses at different CBCT images were considered as evaluated. The phantom was scanned with th e standard CT mode (120 kV)\; the targets (Brain and Spinal Cord) were con toured and treatment plan was created. \n![Fig.1. Dose difference between rCT and cCBCT with imbedded HUs correction][1]\nObtained CBCTs for four di fferent regions of the phantom (head\, chest\, abdomen\, and pelvis) were united into one combined series (cCBCT) for futher dose calculation. Also all areas were scanned using the only low-dose CBCT protocol to get anothe r low-dose cCBCT. HU to electron density correction was applied for both c CBCT and low-dose cCBCT\, assigning density to bones and lungs was applied only for low-dose cCBCT. Reference and evaluated dose distributions were compared using gamma criteria of 2 % 1 mm. The number of points that satis fy this gamma-criterion is 87.38 % between rCT and low-dose cCBCT\; 94.08 % between rCT and low-dose cCBCT with assign lungs and bones densities\; 9 6.78 % between rCT and low-dose cCBCT with imbedded correction HUs\; 98.72 % between rCT and cCBCT captured on different protocols corresponding sca n areas with imbedded HUs correction. Plans recalculation using several CB CTs for long targets is difficult but feasible task and provide possibilit ies for adaptive radiotherapy. \n\n\n [1]: https://ibb.co/fSQs3PJ\n\nhttp s://events.sinp.msu.ru/event/8/contributions/315/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/315/ END:VEVENT BEGIN:VEVENT SUMMARY:PECULIARITIES OF STRUCTURE OF WEAKLY BOUND LITHIUM NUCLEI (A = 6 –11) AND NUCLEAR REACTION MECHANISMS AT LOW ENERGIES DTSTART;VALUE=DATE-TIME:20220711T101000Z DTEND;VALUE=DATE-TIME:20220711T104500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-636@events.sinp.msu.ru DESCRIPTION:Speakers: Kairat Kuterbekov (L.N.Gumilyov Eurasian National Un iversity\, Faculty of Physics and Technical Sciences)\nReview talk conside rs present-day status of experimental and theoretical results on angular d istributions and total cross sections of reactions with light weakly bound lithium nuclei (6–11Li). Peculiarities of stucture of light weakly boun d lithium nuclei (6–11Li)\, their effect on mechanisms of nuclear reacti ons are discussed. The works from recent (2017–2022) years [1–5] are a lso analyzed in the review.\n\nhttps://events.sinp.msu.ru/event/8/contribu tions/636/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/636/ END:VEVENT BEGIN:VEVENT SUMMARY:SUPERNOVA NEUTRINO SPECTRA & OBSERVATIONS BY LARGE VOLUME TELESCOP ES DTSTART;VALUE=DATE-TIME:20220716T081000Z DTEND;VALUE=DATE-TIME:20220716T084500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-596@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Kondratyev (JINR)\nThe neutrino dynamics in hot and dense matter corresponding to supernova explosions is considered. The kinetic equation for a neutrino phase-space distribution function is obtained\, taking into account inelastic scattering by nuclear particles. The transfer and diffusion components in an energy space are argued to dom inate in the transport properties. It is shown that the energy transfer co efficient changes from positive to negative values when the neutrino energ y exceeds four times the temperature. Effects in the neutrino dynamics and energy spectra are discussed. \nStrongly variable transient supernova neu trino fluxes can be detected using Large-Volume Neutrino Telescopes: KM3Ne T\, Baikal-GVD\, etc. Sensitivity to neutrinos on a scale of 10 MeV can be achieved by observing a collective increase in the rate r of counting coi ncidences using multiple detectors. For the multiple k coincidences the ra tio signal/background is given by (1+ rSN / rB)^k~(1+ k rSN / rB) with sup ernova and background detection rates rSN and rB . Evidently\, the k–fo ld coincidence enhances a sensitivity by a factor k . The strengthening of neutrino hard energies is also favorable for supernova neutrino observati ons by Large Volume Telescopes.\n\nhttps://events.sinp.msu.ru/event/8/cont ributions/596/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/596/ END:VEVENT BEGIN:VEVENT SUMMARY:SIMULATION OF THE FAST READOUT SYSTEM FOR MCP-BASED BEAM-BEAM COLL ISIONS MONITOR FOR NICA EXPERIMENTS DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-317@events.sinp.msu.ru DESCRIPTION:Speakers: nikodim makarov (saint-petersburg state university)\ nThe event-by-event selection of nucleus-nucleus interactions with well-de fined initial conditions of the interaction point (IP) location in the exp eriment at NICA collider\, beam-gas collisions suppression\, precise event time definition\, as well as control of luminosity\, are important both f or data collection and for the off-line analysis of the results of upcomin g measurements at JINR. For these purposes\, the compact Fast Beam-Beam Co llisions Monitor (FBBC) based on the micro-channel plates (MCPs) was propo sed recently in [1]. Position and time sensitive\, multi-anode MCP detecto rs allow to get\, for each bunch crossing\, the information on the IP coor dinate\, on the multiplicity and of arrival times of charged particles for med in the collision.\n In the present work\, we estimate both the capabil ities of the fast\, precise timing measurements scheme and\, in addition\, of the collision centrality determination in AA collisions. The scheme is based on the method of delayed coincidences using high-speed comparators. We carried out the modeling of the system prototype within the framework of the Quartus [2] environment. Results allow us to state that it is possi ble to determine the response time of the detector with an uncertainty of about 50 ps. Using the coincidence schemes will make it possible to identi fy the number of spectators and\, based on the processing of timing inform ation\, to make conclusions about the centrality of interaction in each ev ent. \n The estimated speed of the analysis scheme is less than 20 ns per each event. This allows us to propose this FBBC readout system\, based on the high-speed comparators\, as the fast\, bunch-by-bunch crossing pre-tri gger\, both in terms of the IP position and the class of centrality.\nThis research has been conducted with financial support from St. Petersburg St ate University (project No 93025435).\n\n1. A.A. Baldin et al.\, Nucl. Ins trum. & Meth. A. 958 . 162154 (2020).\n2. Intel Quartus Prime Design Softw are\, https://www.intel.ru/content/www/ru/ru/software/programmable/quartus -prime/overview.html\n\nhttps://events.sinp.msu.ru/event/8/contributions/3 17/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/317/ END:VEVENT BEGIN:VEVENT SUMMARY:THE STATUS OF FOOD IRRADIATION RESEARCH IN LOMONOSOV MOSCOW STATE UNIVERSITY DTSTART;VALUE=DATE-TIME:20220712T103000Z DTEND;VALUE=DATE-TIME:20220712T105000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-653@events.sinp.msu.ru DESCRIPTION:Speakers: Ulyana Bliznyuk (Lomonosov Moscow State University)\ nRadiation technologies are commonly used in different areas\, such as med icine\, in treatment of tumors\, radioecology\, to ensure radiation safety of the natural environment\, and agriculture\, to combat with pests and s timulate the growth of crops. Moscow State University (MSU) is currently f ocusing on five aspects of research in food irradiation.\nOur researchers are particularly involved in the development of irradiation technology wit h accelerated electrons. Such a focus is determined by economic demand in view of the fact that electron accelerators have proved to be more efficie nt in terms of dose rate and processing speed\, and much safer compared to radioisotopes. Moreover\, it is possible to determine the irradiation dep th by varying electron beam energy. However\, it is still unclear how to a chieve a consistent dose uniformity in objects of different geometry and t exture. To solve this problem we have developed and tested a dose uniformi ty method using aluminium modifiers placed between the accelerator output and the treated object. Researchers of MSU are now improving this method t o ensure the 100 % irradiation dose uniformity in objects with the linear dimension of up to 8 cm. \nAnother area of MSU research is the reconstruct ion of electron beam spectrum using experimental depth dose distributions in phantoms developed specifically for simulation and measuring dose value s. Knowing the spectrum of industrial accelerator allows to calculate dept h dose distribution in the objects of different geometry and precisely est imate the dose uniformity throughout the treated food item. In search of o ptimal irradiation treatment parameters\, our researchers are studying the effect of the dose value and rate\, as well as type of irradiation on mic robiological and chemical composition of a range of foods. The data obtain ed during the research can be used for the development of state irradiatio n guidelines. One more area of the research is detecting the fact of foods tuff irradiation by means of gas chromatography to identify organic volati le compounds\, which show that some irradiation treatment has been perform ed on the item. Also the fluorescent fingerprinting express method is bein g assessed as a potential strategy to prove the fact of irradiation treatm ent. To address the needs of agriculture our university is studying the im pact of pre-seeding irradiation treatment on crops infected with different fungi to increase the yield and its phytosanitary safety.\n\nhttps://even ts.sinp.msu.ru/event/8/contributions/653/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/653/ END:VEVENT BEGIN:VEVENT SUMMARY:NEW MODES OF COLLINEAR CLUSTER TRI-PARTITION OF $^{252}$Cf(sf) DTSTART;VALUE=DATE-TIME:20220712T091000Z DTEND;VALUE=DATE-TIME:20220712T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-349@events.sinp.msu.ru DESCRIPTION:Speakers: Yuri Pyatkov (JINR & MEPHI)\nIn our previous publica tions [1–4] we discussed various manifestations of a new decay channel o f the low excited heavy nuclei called collinear cluster tri-partition (CCT ). In the frame of the essentially modified experimental method\, addition al linear structures corresponding to the relations M$_1$ $+$ M$_2$ $=$ co nst and M$_1$ $–$ M$_2$ $=$ const for the masses M1 and M2 of the fissio n fragments (FFs) from $^{252}$Cf(sf) detected in the opposite spectromete r arms form the rhombic-like configurations with the vertices correspondin g to the magic nuclei. The structures are statistically reliable\, they ar e conditioned by a pronounced and complex correlation between the masses o f the FFs measured independently. Possible physical scenario standing behi nd the structures are discussed.\n\nhttps://events.sinp.msu.ru/event/8/con tributions/349/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/349/ END:VEVENT BEGIN:VEVENT SUMMARY:TIME-DEPENDENT DESCRIPTION OF THE REACTION $^{28}$Si($^{11}$Be\,$^ {10}$Be) AT LOW ENERGIES DTSTART;VALUE=DATE-TIME:20220712T131000Z DTEND;VALUE=DATE-TIME:20220712T133000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-206@events.sinp.msu.ru DESCRIPTION:Speakers: Aidos Azhibekov (JINR\, Dubna)\nThe evolution of the probability density of the outer weakly bound neutron of the $^{11}$Be nu cleus (Fig. 1) in collision with the $^{28}$Si nucleus is described based on numerical solution of the time-dependent Schrödinger equation [1\, 2]. The probabilities of outer neutron removal due to the processes of neutro n transfer and nuclear breakup are determined. The results of calculating the cross sections for removal of the outer neutron from the $^{11}$Be nuc leus are close to the experimental data [3]. Numerical solution of the tim e-dependent Schrödinger equation taking into account spin-orbit interacti on [4−6] makes it possible to study the dynamics of removal of the outer weakly bound neutron of the $^{11}$Be nucleus and to determine the contri butions of the neutron transfer channels and nuclear breakup in low-energy collisions with a target nucleus.\n\nFig. 1. Evolution of the probability density for the outer neutron of the $^{11}$Be nucleus in the collision $ ^{11}$Be + $^{28}$Si at beam energy 55 MeV in the reference frame moving r elative to the laboratory frame with a constant velocity equal to the velo city of the projectile nucleus at a sufficiently large distance from the t arget nucleus. The course of time corresponds to the direction from left t o right.\n\n1. A.K. Azhibekov\, V.V. Samarin\, and K.A. Kuterbekov\, Chin. J. Phys. 65\, 292 (2020).\n2. A.K. Azhibekov *et al*.\, Phys. Atom. Nucl. 84\, 635 (2021).\n3. F. Negoita *et al*.\, Phys. Rev. C 59\, 2082 (1999). \n4. V.V. Samarin\, Phys. Atom. Nucl. 78\, 128 (2015).\n5. Yu.E. Penionzhk evich\, Yu.G. Sobolev\, V.V. Samarin *et al*.\, Phys. Rev. C 99\, 014609 ( 2019).\n6. V.V. Samarin\, Bull. Russ. Acad. Sci.: Phys. 84\, 990 (2020).\n \nhttps://events.sinp.msu.ru/event/8/contributions/206/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/206/ END:VEVENT BEGIN:VEVENT SUMMARY:A NEW OUTLOOK ON THE SQUARE-WELL POTENTIAL APPROACH FOR ASTROPHYSI CAL FUSION REACTION DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-302@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Torilov (St. Petersburg State University)\nLa test achievements in experimental study of light nuclei fusion reactions r elevant for nuclear astrophysics in the deep subbarrier region required th e development of models that make it possible to describe the reaction cro ss section at low energies [1]. Today there is no unified approach to desc ribe such reactions: a) with excluding of the potential choice ambiguity [ 2]\; b) with the description of the resonant nature of the cross section [ 3] and its hindrance for low energies [1]. \nAs a first approach we can co nsider the square-well potential\, which allows a simple analytical expres sion to determine the transmission coefficients and hence the reaction cro ss section. As was shown in [4]\, this model gives us the possibility to d escribe the fusion cross section in the low-energy region for 16O + 16O nu clei with sufficient accuracy.\nIn present work\, the square-well model wa s applied to the light nuclei (10B\, 12C\, 14N\, 16O\, 18O\, 20Ne) fusion reactions important for nuclear astrophysics. Functional dependences for t he potential depth and well’s radius were obtained. Artifacts associated with abruptly changed shallow potential well: overestimations of the chan nel radius\, anomalous behavior of the imaginary potential for a number of reactions were determined.\nIt was shown that\, within the framework of u sed model\, a satisfactory description can be achieved for all investigate d reactions.\n\n1. C. L. Jiang\, B. B. Back\, K. E. Rehm et al\, Eur. Phys . J. A 57\, 235 (2021).\n2. S. Y. Torilov\, N. A. Maltsev and V. I. Zhereb chevsky\, Bull. Russ. Acad. Sci. Phys. 85\, 548 (2021).\n3. S. Y. Torilov\ , N. A. Maltsev and V. I. Zherebchevsky et al\, Phys. Part. Nuclei 53\, 40 3 (2022)\n4. R. Ogura\, K. Hagino and C. A. Bertulani\, Phys. Phys. Rev. C 99\, 065808 (2019).\n\nhttps://events.sinp.msu.ru/event/8/contributions/3 02/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/302/ END:VEVENT BEGIN:VEVENT SUMMARY:ATOMIC K-SHELL DOUBLE HOLE CREATION DUE TO ELECTRON CAPTURE AND PH OTOIONIZATION DTSTART;VALUE=DATE-TIME:20220713T130000Z DTEND;VALUE=DATE-TIME:20220713T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-363@events.sinp.msu.ru DESCRIPTION:Speakers: Maksim Kiselev (Lomonosov Moscow State University)\n Double core hole (DCH) states could be created in two different mechanisms . The first is core subshell electron capture by the nucleus and subsequen t shake-process of an electron from the same subshell either to the high u noccupied state (shake-up) or to the continuum (shake-off) mostly due to i nstant changing of the nucleus charge by unity. Another way is photoioniza tion\, when one electron is “knocked out” from the subshell and the re sidual one undergoes shake-process resulting from changing in screened pot ential. Physics of the DCH currently attracts interest stimulated by new p ossibilities of their creation by X-ray free electron lasers and advanced synchrotron sources. Furthermore\, DCHs might become a new tool for chemic al analysis [1] and plasma diagnostics [2].\n\nIn this theoretical contrib ution we compare the two mechanisms of producing the DCH: K-electron captu re and K-shell photoionization. General theoretical approaches to both pro blems are known\, but we are not aware of such a comparison based on up-to -date models for many-electron atoms. We focus on DCH states in K-shell of $^7$Be and $^{37}$Ar (isotopes with natural electron capture radioactivit y). The goal is to determine double K-vacancy production probability in bo th described channels. Also\, we analyze shake-off electron spectra and co mpare the results with different theoretical approaches and experiment.\n\ nOur model is based on sudden approximation with the use of fully non-orth ogonal sets of electron orbitals in initial and final states\, accounting for j-splitting of the subshells. Expansions for transition matrix element s are obtained with ZAP_NO package [3]. Radial wave functions are construc ted within the multiconfigurational Hartree-Fock method [4]. Photoionizati on calculations are performed with the use of B-spline R-matrix (BSR) soft ware complex [5].\n\nThis research was funded by the Russian Ministry of S cience and Education grant No. 075-15-2021-1353. The work of M.D.K. is sup ported by the Ministry of Science and Higher Education of the Russian Fede ration (project No. 0818-2020-0005) using resources of the Shared Services “Data Center of the Far-Eastern Branch of the Russian Academy of Scienc es”.\n\n1. M. Nakano et al.\, Phys. Rev. Lett. 110\, 163001 (2013).\n2. A.Ya. Faenov et al.\, Laser and Particle Beams 33\, 27 (2015).\n3. O. Zats arinny\, Comput. Phys. Comm. 98\, 235 (1996).\n4. C.F. Fischer\, T. Brage and P. Jonsson\, Computational Atomic Structure: An MCHF Approach (Bristol : IOP Publishing\, 1997).\n5. O. Zatsarinny\, Comput. Phys. Comm. 174\, 27 3 (2006).\n\nhttps://events.sinp.msu.ru/event/8/contributions/363/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/363/ END:VEVENT BEGIN:VEVENT SUMMARY:The JUNO experiment: status and prospects DTSTART;VALUE=DATE-TIME:20220713T094000Z DTEND;VALUE=DATE-TIME:20220713T101500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-640@events.sinp.msu.ru DESCRIPTION:Speakers: Maxim Gonchar ()\nJiangmen Underground Neutrino Obse rvatory is an experiment under construction in China. A spherical detector of 35 m in diameter filled with 20 kt of liquid scintillator and equipped with more than 17'612 (25'600) large (small) photomultipliers will provid e immense statistics\, high energy resolution (σ=3% at 1 MeV) and low ene rgy threshold (0.2 MeV) making the physics program broad.\nThe primary goa l is determination of the neutrino mass ordering and precision measurement of the neutrino oscillation parameters via observation of more than 100'0 00 reactor electron antineutrinos from Yangjiang and Taishan nuclear power plants. The experiment will also observe high statistics of the solar neu trinos from pp\,⁷Be and ⁸B. The geo- neutrinos will be measured with u ncertainty of 5%. JUNO will also be able to observe atmospheric neutrinos in sub-GeV and GeV region\, diffuse supernovae neutrino background with si gnificance of 3σ in 10 years and will be able to see the neutrinos from t he core collapse supernova.\nThe experiment will have competitive sensitiv ity to the nucleon decay and the cold dark matter annihilation in the Sun. \n\nIn addition to the JUNO detector the JUNO experiment will be equipped with two satellite detectors: TAO and OSIRIS. The TAO will measure the ant ineutrino spectrum from the Taishan nuclear power plant with energy resolu tion of σ=2% at 1 MeV and statistical uncertainty of 1%. It will be able to test short baseline neutrino oscillation up to the masses of 8 eV². A new project Serappis aims to use the modified OSIRIS detector to measure t he solar pp neutrinos with energy resolution of σ=2.5% and precision of f ew percents.\n\nThe talk will cover the status of the experiment and will provide the latest estimation of its sensitivity.\n\nhttps://events.sinp.m su.ru/event/8/contributions/640/ LOCATION: Физичесий ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/640/ END:VEVENT BEGIN:VEVENT SUMMARY:STRUCTURE AND SYNTHESIS OF MAGNETIZED HEAVY NUCLEI DTSTART;VALUE=DATE-TIME:20220713T070000Z DTEND;VALUE=DATE-TIME:20220713T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-318@events.sinp.msu.ru DESCRIPTION:Speakers: Alina Ulanova (Russia)\, Vladimir Kondratyev (JINR )\nNucleosynthesis at large magnetic induction relevant for core-collapse supernovae\, and neutron star mergers is considered. For respective magnet ic fields of a strength up to ten teratesla atomic nuclei exhibit linear m agnetic response due to the Zeeman effect. Such nuclear reactivity can be described in terms of magnetic susceptibility [1]. Susceptibility maxima c orrespond to half-filled shells. The neutron component rises linearly with increasing shell angular momentum\, while the contribution of protons gro ws quadratically due to considerable income from orbital magnetization. Fo r a case j = l + 1/2 the proton contribution makes tens of nuclear magneto ns and exceeds significantly the neutron values which give several units. In a case j = l – 1/2 the proton component is almost zero up to g-shell. Respectively\, a noticeable increase in the generation of corresponding e xplosive nucleosynthetic products with antimagic numbers is predicted for nuclei at charge freezing conditions. In the iron group region new seeds a re created also for the r-process. In particular\, the magnetic enhancemen t of the volume of 44Ti isotopes is consistent with results from observati ons and indicates the substantial increase in the abundance of the main ti tanium isotope (48Ti) in the Galaxy’s chemical composition. Magnetic eff ects are proved to result in a shift of the r-process path towards smaller mass numbers\, and an increase in the volume of low mass nuclides in peak s of the r-process nuclei.\n\nhttps://events.sinp.msu.ru/event/8/contribut ions/318/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/318/ END:VEVENT BEGIN:VEVENT SUMMARY:COMPTON DESINTEGRATION OF POSITRONIUM DTSTART;VALUE=DATE-TIME:20220713T101500Z DTEND;VALUE=DATE-TIME:20220713T105000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-597@events.sinp.msu.ru DESCRIPTION:Speakers: Yuri Popov (SINP\, Lomonosov Moscow State University \, Moscow\, Russia\; BLTP\, Joint Institute of Nuclear Research\, Dubna\, Russia)\nThe recent experiments on Compton scattering using a new experime ntal technique [1] gave rise to a new wave of interest in this old effect discovered 100 years ago. To describe the process of Compton decay of posi tronium we use the nonrelativistic A2 approximation. \n We study the C ompton single ionization of positronium in comparison with the same of hyd rogen [2]. The initial photon energy of a few keV allows one to apply the non-relativistic approach. Interesting differences in the behavior of vari ous differential cross sections of the process are observed. In particular \, the conditions were found\, under which the electron and positron move parallel to each other with equal velocities\, which leads to a series of resonances (see Fig.1). This suggests that the probability of annihilation is suppressed in this continuum state\, and it is likely to be a long-liv ed one\, especially in the presence of external electric and magnetic fiel ds.\n\nFig. 1. FDCS (atomic units) of Compton positronium decay versus the energy Ee(eV) of the emitted electron and the photon scattering angle θ. The photon energy is ω = 5 keV \n\n1. M. Kircher et al. Nature Physics 1 6(4)\, 756 (2020) 2. S. Houamer et al. EPJD 74\, 81 (2020 )\n\nhttps://events.sinp.msu.ru/event/8/contributions/597/ LOCATION: Физичесий ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/597/ END:VEVENT BEGIN:VEVENT SUMMARY:Biological protection calculation of the elextron accelerator MT-2 5 FLNR JINR by using FLUKA software package DTSTART;VALUE=DATE-TIME:20220715T103000Z DTEND;VALUE=DATE-TIME:20220715T105000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-616@events.sinp.msu.ru DESCRIPTION:Speakers: Yeldos Bolatkazyyev (JINR)\nPhysical experiments to study collinear cluster tri-partition are planned on the cyclic electron a ccelerator MT-25. This is a new type of multibody decay that requires\, du e to the small cross-section of the reaction\, work at the maximum intensi ty of the electron beam for research.\nThe purpose of this work is to stud y the radiation fields that occur at the maximum intensity of the electron beam outside the biological protection of the microtron at an energy of 2 5 MeV.\nIn the course of the work\, measurements of the dose rate of neutr on and bremsstrahlung radiation were carried out. Beyond the biological pr otection of electron accelerators\, they are the main components of radiat ion hazard. For measurements\, a mobile measuring stand was used\, the mai n elements of which are neutron and gamma radiation dosimeters UDBN-01 and UDBG-01.\nAccording to the results of measurements at elevated beam curre nts\, significant excess of the dose rate of braking radiation was detecte d at some points of the existing protection. Protection calculations were performed to eliminate weaknesses using the FLUKA software package created for Monte Carlo simulation of physical processes. At the same time\, one of the tasks was to conduct a comparative analysis of the measured and cal culated data\, since there is practically no work on experimental verifica tion of the reliability of the results of the specified software package f or electron accelerators in the energy range up to 25 MeV.\nBased on the r esults of calculations\, a new project of local protection around the brak ing target assembly is presented. The measurement results carried out with the installed new protection showed that outside the microtron room\, the power of the equivalent dose of braking radiation coincides with the calc ulation results and does not exceed the maximum permissible value of 1.2mS v/hour (according to the rules of NRB-99/2009).\n\nhttps://events.sinp.msu .ru/event/8/contributions/616/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/616/ END:VEVENT BEGIN:VEVENT SUMMARY:Precision measurement of 144Ce – 144Pr beta-spectrum DTSTART;VALUE=DATE-TIME:20220713T074000Z DTEND;VALUE=DATE-TIME:20220713T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-320@events.sinp.msu.ru DESCRIPTION:Speakers: Ilia Drachnev (PNPI NRC KI)\nBeta-decay is a specifi c decay process that undergoes a reaction with thee-particle product compo sition that results in continuous spectral shape of electrons or positrons . The shape of the spectrum was described already in 1934 by E. Fermi [1]\ , but such description appeared to be valid only for allowed transitions ( ΔI = 0\,1 Δπ = 1). Involvement of nuclear exchange in other types of tr ansitions complicates such decay description and often makes it necessary to perform experimental evaluation. \nPrecision beta-spectra measurement a lways had a great importance in some fundamental physics problems includin g neutrino physics\, e.g. a 144Ce – 144Pr source is one of the most suit able to search for neutrino oscillation into sterile state for sterile neu trino mass around 1 eV. Magnetic and electrostatic spectrometers have high resolution\, but at the same time usage of such kinds of equipment involv es the size and cost issues. Since electron mean free path at the energy o f 3 MeV (which is basically the maximum energy of a beta-transition for th e long-lived nuclei) does not exceed 2 g/cm2\, electron registration could be effectively performed with the solid state scintillators and semicondu ctors. \nA strong probability of backscattering from detector surface is p resent in case of semiconductor detectors and is dependent upon the detect or material. One possible way of solving this issue is a precise simulatio n of the spectrometer response function that is quite promising as it coul d be used in a very simple target-detector setup. Another solution to this problem is usage of 4π geometry [2]\, that fully covers the radioactive source and is able to register the backscattered electrons. \nIn this work we present the results of 144Ce – 144Pr spectrum measurement performed with two setups of both types and controlled with the shape of an allowed 0- – 1- transition in 144Pr\, having precision that was substantially increased with respect to the previous studies of these beta-spectra. We h ave obtained parameter values for the paramertrized transition shape facto r that is compared with the other experiments and could be used for electr on antineutrino spectrum definition.\n\nhttps://events.sinp.msu.ru/event/8 /contributions/320/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/320/ END:VEVENT BEGIN:VEVENT SUMMARY:Model study of the energy dependence of the correlation between an isotropic flow and the mean transverse momentum in Au+Au collisions DTSTART;VALUE=DATE-TIME:20220712T130000Z DTEND;VALUE=DATE-TIME:20220712T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-322@events.sinp.msu.ru DESCRIPTION:Speakers: Petr Parfenov (NRNU MEPhI)\nOne of the key goals of the heavy-ion programs is to study the transport properties of the quark-g luon plasma (QGP) forming in the collisions of two nuclei\, such as the sp ecific shear viscosity η/s as a function of temperature T and baryon chem ical potential μB. The precise extraction of such parameters may present a certain difficulties. To strengthen the constraints for η/s(T\, μB) th e modified Pearson correlation coefficient ρ(v22\,[pT]) between the avera ge transverse momentum [pT] and square of the elliptic flow coefficient v2 2 might be employed.\nIn this work\, sensitivity of the correlation coeffi cient ρ(v22\,[pT]) to the attenuation effects of the specific shear visco sity and the initial-state geometry of the collisions is studied using the UrQMD+vHLLE hybrid model to simulate Au+Au collisions. Measurements of th e correlation between v22 and [pT] could aid precision extraction of η/s( T\, μB) from the experimental data available at RHIC.\n\nhttps://events.s inp.msu.ru/event/8/contributions/322/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/322/ END:VEVENT BEGIN:VEVENT SUMMARY:THE CROSS-SECTION OF NUCLEAR-TUNGSTEN INTERACTIONS OBTAINED WITH M EASUREMENTS OF COSMIC RAYS BY PAMELA DTSTART;VALUE=DATE-TIME:20220715T072000Z DTEND;VALUE=DATE-TIME:20220715T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-367@events.sinp.msu.ru DESCRIPTION:Speakers: Olga Golub (NRNU MEPhI)\nThe aim of this work is to study the cross-section of the inelastic interactions of nuclei with tungs ten based on the data of PAMELA space experiment [1]. This instrument is a magnetic spectrometer designed to study fluxes of charged particles in co smic rays\, which was launched into the near-Earth orbit aboard the Resurs -DK1 satellite\; data collection continued from 2006 to 2016. PAMELA inclu des a set of detectors which helps to identify the particles including the ir magnitude and sign of charge\, rigidity\, velocity\, mass and energy.\n So\, we can select from the PAMELA data a necessary component of cosmic ra ys with known particles and their energy coming at a known angle. At the s ame time\, another detector - a coordinate-sensitive calorimeter with a tu ngsten absorber plays a role of target for these particles. This looks lik e an experiment in particle physics on accelerators with formation of a be am of particles and observation of its interaction in target. Thus\, it be comes possible to study the characteristics of nuclear-nuclear interaction s with a large number of different nuclei in a beam according to chemical composition of cosmic rays in a wide energy range from hundreds of MeV to ~TeV.\nA similar method is used in ground-based observations of ultrahigh- energy cosmic rays\; however\, in this work\, we use the previously propos ed method relies on a much larger amount of information about cosmic ray p articles due to the precision nature of the PAMELA measurements [2].\nIn t he report\, we present the experimental cross sections for the interaction of nuclei from protons to carbon with tungsten nuclei obtained by the des cribed method. Obtained results compared with the cross-sections reconstru cted from the simulation data coming from Geant4 software package [3]\, wi th measurements at accelerators and existing theoretical models.\nResults can be used to improve our knowledges about nuclear forces and expand the standard Geant4 hadronic models and other numerical packages describing th e interaction of particles with matter.\n\n1. O. Adriani\, G. Barbarino\, G.A. Bazilevskaya et al\, PAMELA - A Payload for Antimatter Matter Explora tion and Light-nuclei Astrophysicsg\, Astroparticle Physics\, V.27\, 2007. \n2. О. Голуб\, А. Майоров\, Определение сече ния неупругого взаимодействия протонов и ядер гелия с вольфрамом по данным косм ического эксперимента PAMELA\, Учен. зап. фи з. фак-та Моск. ун-та. 2019\n3. S. Agostinelli et al.\, Gean t4 - A Simulation Toolkit\, Nucl. Instrum. Meth. A 506\, 2003.\n\nhttps:// events.sinp.msu.ru/event/8/contributions/367/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/367/ END:VEVENT BEGIN:VEVENT SUMMARY:First tests on GRAND set-up DTSTART;VALUE=DATE-TIME:20220712T124000Z DTEND;VALUE=DATE-TIME:20220712T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-251@events.sinp.msu.ru DESCRIPTION:Speakers: Alena Kuznetsova (JINR)\nGRAND is a Gas-filled Recoi l Analyzer and Nuclei Detector (see Fig.1)\, which created for experiments on the synthesis of super heavy elements. Facility is installed at 4th be am line of the cyclotron DC-280[2] in the SHE Factory at FLNR [1]. This se parator has the scheme QvDhQhQvD. Helium with a pressure of P=0.7-1.5 mBa is used as the gas. The ion optical calculations for the complete system h ave been checked by placing 226Ra source at the target position and transp orting the emitted α-particles to a position sensitive detector at the fo cal plane.\n\nAs well as tests with complete fusion reactions 174Yb(48Ca\, xn)222Th*\, 170Er(48Ca\,xn)218Ra* and 208Pb(48Ca\,xn)256No* were done. \n \n1. S. Dmitriev\, et al.\, Status EPJ Web Conf.131 (08001) (2016) 1-6. \n 2. G.G. Gulbekian\, et al.\, Phys. Part. Nuclei Lett. 16 (6) (2019) 866-87 5.\n\nhttps://events.sinp.msu.ru/event/8/contributions/251/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/251/ END:VEVENT BEGIN:VEVENT SUMMARY:THUNDERSTORM FLASHES AS THE MECHANISM OF 14C RADIOISOTOPE GENERATI ON DTSTART;VALUE=DATE-TIME:20220712T125000Z DTEND;VALUE=DATE-TIME:20220712T131000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-617@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Lyashuk (Institute for Nuclear Research (IN R) of the Russian Academy of Sciences)\nAn atmospheric production of 14C r adioisotope goes by the 14N(n\,p)14C reaction under cosmogenic fluxes and this process is considered as the main source of radiocarbon creation whic h rate of accumulation is evaluated as ~ 6.6 kg per year. An exclusively o pportunities of dating based on the analysis of 14C concentration in the v ery old and ancient organic samples led to the discovery of short-term sec ular variation of radiocarbon in tree rings [1] and to the hypothesis of 1 4C generation under thunderstorms flashes. The nature of the lightning phe nomena in fact is connected with the development of electron avalanche in the strong atmospheric electric fields (~ 300 kV/m and more) [2]. The very fast electron avalanche growth in the cloud electric fields ensures the phenomenon of terrestrial $\\gamma$-ray bursts [2\,3]. These energetic γ -rays generate the photonuclear reactions on atmospheric isotopes (with si gnificant yield for hard photons $E_{\\gamma}$ = 20-60 MeV) as 14N$(\\gamm a \,n)$13N\, 16O$(\\gamma \,n)$15O\, 40Ar$(\\gamma \,n)$39Ar. An increase of neutron flux causes the next series of $(n\,\\gamma)$\, (n\,a)\, (n\,p) -reaction and the 14N(n\,p)14C is the top important for dating problem. Fo r evaluating of the radiocarbon generation under thunderstorm conditions ( and creation of another atmospheric isotopes too) it was proposed the mode l (realized in the spherical-layer geometry). The calculation were made at the several altitudes of the lower part of the atmosphere at the altitude s from 1 up to 15 km (covering the possible heights of detected lighting) [4\,5]. Decrease of the atmospheric densities at increase of the altitude is critical for electron avalanche evolution and is included in the model. It was obtained the yield from thunderstorm 14C generation evaluated as 1 e-4% relative to cosmogenic one. The results support the hypothesis that r adiocarbon rise in the old tree rings (at AD 774–775) [1] can be explain ed by increased Sun activity of the Sun at this time interval.\n\n1. F. Mi yake\, K. Nagaya\, K. Masuda\, T. Nakamura\, Nature 486\, (2012) 240. [doi .org/10.1038/nature11123][1]\n2. Joseph R. Dwyer · David M. Smith · Stev en A. Cummer. High-Energy Atmospheric Physics: Terrestrial Gamma-Ray Flash es and Related Phenomena. Space Sci Rev (2012) 173:133–196. [DOI 10.100 7/s11214-012-9894-0][2].\n3. Leonid Babich\, Thunderous nuclear reactions. Nature\, v.551 (2017) 443. [doi.org/10.1038/d41586-017-07266-w][3]\n4. V. I. Lyashuk\, Evaluation of Radiocarbon 14C Yield Under Conditions of Thun derstorms\, Geophysical Research Letters\, 48\, e2021GL095357. [https://do i.org/10.1029/2021GL095357][4]\n5. V.I. Lyashuk\, ArXiv 2011.07417.\n\n\n [1]: https://www.nature.com/articles/nature11123\n [2]: https://link.spr inger.com/article/10.1007/s11214-012-9894-0#citeas\n [3]: https://www.nat ure.com/articles/d41586-017-07266-w\n [4]: https://doi.org/10.1029/2021GL 095357\n\nhttps://events.sinp.msu.ru/event/8/contributions/617/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/617/ END:VEVENT BEGIN:VEVENT SUMMARY:Searches for new physics in the dilepton channel with the CMS det ector at the LHC DTSTART;VALUE=DATE-TIME:20220712T122000Z DTEND;VALUE=DATE-TIME:20220712T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-366@events.sinp.msu.ru DESCRIPTION:Speakers: Ilia Zhizhin (JINR)\nSearch for physics beyond the s tandard model using resonant and nonresonant models in dilepton channel ha s been performed using Run 2 data with integrated luminosity 140 fb-1 in p roton-proton collisions at √s=13 TeV with the CMS experiment at the LHC. \nA good agreement with the predictions of the standard model is found\, n o significant deviations are observed.\nLimits on the parameters of the co nsidered models are reported.\n\nhttps://events.sinp.msu.ru/event/8/contri butions/366/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/366/ END:VEVENT BEGIN:VEVENT SUMMARY:LOW-ENERGY M1 STATES IN DEFORMED NUCLEI: SPIN SCISSORS OR SPIN-F LIP? DTSTART;VALUE=DATE-TIME:20220714T070000Z DTEND;VALUE=DATE-TIME:20220714T073000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-598@events.sinp.msu.ru DESCRIPTION:Speakers: Valentin Nesterenko (BLTP\, Joint Institute for Nucl ear Research)\nA low-energy magnetic dipole (M1) spin-scissors resonance ( SSR) located just below the orbital scissors resonance (OSR) was predicted in deformed nuclei within the Wigner function moments (WFM) approach\, se e [1\,2] and references therein. We analyze this prediction for 160\,162\, 164Dy and 232Th using fully self-consistent Skyrme quasiparticle random ph ase approximation (QRPA) method [3]. Accuracy of our calculations is confi rmed by a good description of M1 spin-flip giant resonance in these nuclei . It is shown that Dy isotopes indeed have at 1.5–2.4 MeV 1+ states with a large M1 spin strength. These states are almost fully exhausted by a fe w 2qp low-orbital (l = 2\, 3) spin-flip configurations. In contrast to WFM deformation-induced spin-scissors picture\, our calculations show that de formation is not the origin of the low-energy spin M1 states but only a fa ctor affecting their features. This conclusion is illustrated by simple ar guments in terms of mean-field spectra and nuclear current distributions. \n\n 1. E.B. Balbutsev\, I.V. Molodtsova\, and P. Schuck\, Nucl. Phys. A 8 72\, 42 (2011).\n 2. E.B. Balbutsev\, I.V. Molodtsova\, and P. Schuck\, Ph ys. At. Nucl. 83\, 212 (2020). \n 3. V.O. Nesterenko\, P.I. Vishnevskiy\, J. Kvasil\, A. Repko\, and W. Kleinig\, Phys. Rev. C 103\, 064313 (2021). \n\nhttps://events.sinp.msu.ru/event/8/contributions/598/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/598/ END:VEVENT BEGIN:VEVENT SUMMARY:RESULTS OF SIMULATION OF TOTAL AND DIFFERENTIAL CROSS SECTIONS FOR 236U FISSION BY NEUTRONS WITH ENERGY UP TO 200 MeV DTSTART;VALUE=DATE-TIME:20220712T120000Z DTEND;VALUE=DATE-TIME:20220712T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-323@events.sinp.msu.ru DESCRIPTION:Speakers: Alexey Barabanov (National Research Centre "Kurchato v Institute")\nIn [1]\, it was rightly noted that “nuclear fission remai ns the most complex topic in applied nuclear physics”. The current state of the theory based on the model of transition states at fission barriers does not allow one to reproduce the fission cross section of a nucleus by neutrons as a function of their energy without using a significant number of fitting parameters. This is partly due to the lack of information abou t the spectra of transition states. In our opinion [2\,3]\, the understand ing of the fission mechanism can be improved by using data on the angular distribution of fragments or\, in other words\, on the ratio of the differ ential fission cross section to the total one. The idea is that the angula r distribution of fragments is determined by the distribution of the fissi on probability over the projection K of the nuclear spin on the axis of de formation on a barrier\, which in turn depends on what values of K charact erize the rotational bands of transition states on the barrier. Thus\, the angular distribution of fragments can provide important information about the spectrum of transition states. \nPreviously\, we analyzed data on fis sion cross sections and angular distributions of fission fragments in the reactions 237Np(n\,f) [3] and 240Pu(n\,f) [2]. The present work is devoted to the reaction of 236U(n\,f). The parameters of the fission barriers tak en from [1] were slightly changed\, which made it possible to reproduce\, using the TALYS-1.9 program [4]\, the energy dependence of the total fissi on cross section in the range of incident neutron energy from 0.5 to 120 M eV. Using a modified version of the same program gives a good description of the angular anisotropy W(0º)/W(90º) of the fission fragments within t he statistical model of the probability distribution of fission over the n umber K in a wide range from 2.5 to 300 MeV. Of particular interest is the low-energy region from 0.5 to 2.5 MeV\, in which the energy behavior of a ngular anisotropy may be related to the structure of the transition state spectrum at the 237U fission barrier. \n\n1. R. Capote et al. Nucl. Data S heets 110\, 3107 (2009).\n2. A. S. Vorobyev et al.\, JETP Lett. 112\, 323 (2020).\n3. A. L. Barabanov et al.. EPJ Web Conf. 256\, 00003 (2021).\n4. A. J. Koning\, S. Hilaire\, M. C. Duijvestijn. Proc. Int. Conf. on Nuclear Data for Science and Technology (2007\, Nice\, France)\; EDP Sciences. 20 08. P.211.\n\nhttps://events.sinp.msu.ru/event/8/contributions/323/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/323/ END:VEVENT BEGIN:VEVENT SUMMARY:Confinement potential from holographic approach to strong interact ions DTSTART;VALUE=DATE-TIME:20220713T074000Z DTEND;VALUE=DATE-TIME:20220713T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-618@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Afonin (Saint-Petersburg State University)\nW e derive and analyze the confinement potential of the Cornell type between two static color sources within the framework of a generalized Soft Wall holographic approach to strong interactions. This approach was originally developed for describing the linear Regge spectrum of light mesons. The '' linear plus Coulomb'' confinement potential is obtained both in the vector and in scalar channels. It is shown that the quantitative agreement with the phenomenology and lattice simulations is better in the scalar channel. \n\nhttps://events.sinp.msu.ru/event/8/contributions/618/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/618/ END:VEVENT BEGIN:VEVENT SUMMARY:PARTICLE-HOLE DISPERSIVE OPTICAL MODEL: PAST AND FUTURE DTSTART;VALUE=DATE-TIME:20220714T073000Z DTEND;VALUE=DATE-TIME:20220714T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-599@events.sinp.msu.ru DESCRIPTION:Speakers: Michael Urin (National Research Nuclear University “MEPhI”)\nParticle-Hole Dispersive Optical Model (PHDOM) has been orig inally proposed [1] and then implemented to describing main properties of various isoscalar and isovector giant resonances (GRs) in medium-heavy clo sed-shell nuclei (see\, e.g.\, Ref. [2] and references therein). Main prop erties include the energy-averaged strength distribution\, transition dens ity\, and probabilities of direct one-nucleon decay. In fact\, PHDOM is an extension of standard and non-standard continuum-RPA versions to taking i nto account (phenomenologically and in average over the energy) the spread ing effect. For this reason\, PHDOM might be related to semi-microscopic m odels.\nIn this review talk\, a description of the model\, its ingredients \, and recent results [2\, 3] are planned to be briefly presented. Extensi on of PHDOM to taking into account nucleon pairing in open-shell spherical nuclei\, and consideration\, within the model\, of tensor correlations in GR formation (the first attempt has been undertaken in Ref. [4]) will be discussed.\n\n1. Urin M.H.\, Phys. At. Nucl. 74\, 1180 (2011).\; Phys. Rev . C 87\, 044330 (2013).\n2. Gorelik M.L.\, Shlomo S.\, Tulupov B.A.\, and Urin M.H.\, Phys. Rev. C 103\, 034302 (2021)\; https://arxiv.org/abs/2201. 04202.\n3. Bondarenko V.I.\, Urin M.H.\, https://arxiv.org/abs/2201.02965. \n4. Bondarenko V.I.\, Urin M.H.\, Yad. Fiz. 85\, 187 (2022).\n\nhttps://e vents.sinp.msu.ru/event/8/contributions/599/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/599/ END:VEVENT BEGIN:VEVENT SUMMARY:DEPENDENCE OF THE CONVERSION WIDTHS ON THE FINE STRUCTURE OF THE E LECTRON SHELL DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-614@events.sinp.msu.ru DESCRIPTION:Speakers: Feodor Karpeshin ()\n**Usually internal conversion ( IC)\, and IC coefficients (ICC) in particular\, are considered under the a ssumption of a closed shell of the initial atom. Its angular momentum is t hen zero. As a rule\, this approximation is sufficient for the purposes of experiment in neutral atoms or ions of low multiplicity. However\, modern experiments on storage rings\, for example\, in GSI or Lanzhou\, are carr ied out with few-electron ions\, for example\, with helium (He)- or lithiu m (Li)-like ones. In this case\, the electron shell has an angular momentu m other than zero\, which will certainly affect the probability and coeffi cient of the IC. To illustrate\, consider as an example a E2 transition of a nucleus from the initial excited state with spin I1 = 2 to the final st ate with spin I2 = 0 in a beryllium-like ion 1s22s2p1/2. Then the total mo mentum of the electron shell J1 can take on the values J1 = 0 or 1\, and t he conversion probability on the 2p electron will be proportional to 2J1+1 . A similar conclusion can be drawn in the case of the Li-like initial con figuration 1s22p1/2. As a result\, the conversion probabilities and\, acco rdingly\, the ICC in these states will be related as 1 : 3 : 2\, respectiv ely. The issue of total angular momentum is of fundamental importance in t he case of a reverse IC (NEECxe [1]). The report develops the theory of th e question as applied to the conventional and inverse IC.\n\n1. F. F. Karp eshin\, M. B. Trzhaskovskaya\, C. Brandau. Reverse Conversion in $^{161}$D y Ions as an Extension of Dielectronic Recombination. Izv. RAN\, Ser. Fiz .\, 78\, 891 (2014) [Bull. Russian Acad. Sci.\, Physics\, {\\bf 78}\, 67 2 (2014)].\n**\n\nhttps://events.sinp.msu.ru/event/8/contributions/614/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/614/ END:VEVENT BEGIN:VEVENT SUMMARY:SIMULATION OF THE LSD RESPONSE TO THE NEUTRINO BURST FROM SN 1987A DTSTART;VALUE=DATE-TIME:20220714T122000Z DTEND;VALUE=DATE-TIME:20220714T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-329@events.sinp.msu.ru DESCRIPTION:Speakers: Andrey Yudin (NIC "Kurchatov Institute")\nUsing the Geant4 code\, we have performed [1] a thorough simulation of the LSD detec tor response to the neutrino burst from SN 1987A. The neutrino flux parame ters were chosen according to one of the models: the standard collapse mod el or the rotational supernova explosion model [2]. We showed that\, depen ding on the chosen parameters\, one can either obtain the required number of pulses in the detector or reproduce their energy spectrum\, but not bot h together. The interaction of neutrino radiation both with LSD itself and with the material of the surrounding soil was taken into account in our s imulation. We also explored the hypothesis [3] that the entire unique LSD signal at 2:52 UT was produced by neutron fluxes from the surrounding gran ite. However\, this hypothesis was not confirmed by our simulation.\n\nhtt ps://events.sinp.msu.ru/event/8/contributions/329/ LOCATION: Физический ф-т\, 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/329/ END:VEVENT BEGIN:VEVENT SUMMARY:Nπ electroproduction in the resonance region in 12 GeV era DTSTART;VALUE=DATE-TIME:20220714T122000Z DTEND;VALUE=DATE-TIME:20220714T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-328@events.sinp.msu.ru DESCRIPTION:Speakers: Anna Golubenko (Skobeltsyn Institute of Nuclear Phys ics (SINP MSU))\nStudies of single pion electroproduction off protons is t he major source of information on the spectrum and structure of nucleon re sonances (N*) located in the mass range of W<2.0 GeV which decay preferent ially to the Nπ final states [1]. Experimental data from CLAS on the excl usive pπ0\, nπ+ electroproduction channels already provided unique infor mation on N* electroexcitation amplitudes at photon virtualities Q2<5.0 Ge V2 [2]. The analysis of the electroexcitation amplitudes of Δ(1232)3/2+\, N(1440)1/2+\, and Δ(1600)3/2+ resonances within the framework of Dyson -Schwinger equation approach (DSE) demonstrated the possibility of gaining insight into emergence of hadron mass (EHM) [3].\n The new CLAS12 [3] det ector is only available in the world facility capable of extending the kno wledge on N* electroexcitation amplitudes in the mass range up to W<3.0 Ge V and at still almost unexplored range of highest Q2 ever achieved up to 1 0 GeV2. The first results on π0p electroproduction studies with the CLAS1 2 detector will be presented in the talk. The expected results on unpolari zed differential cross sections as well as on beam spin asymmetries will p rovide the important information needed for extraction of the transition h elicity amplitudes for most prominent in π0p channel excited states of th e nucleon at Q2<10 GeV2. Analysis of these results within DSE will allow u s to map out momentum dependence of dressed quark mass within the essentia l range of distances where the dominant part of hadron mass is expected to be generated shedding light on one of the most challenging and still open problem of the Standard Model on emergence of hadron mass and quark gluon confinement from QCD.\n\n1 I.G. Aznauryan and V. D. Burkert\, Prog. Part . Nucl. Phys. 67\, 1 (2012).\n2. D.S. Carman\, K. Joo\, and V.I. Mokeev\, Few Body Syst. 61\, 29 (2020).\n3.S.J. Brodsky et al\, Int. J. of Mod. Phy s. E29 203006 (2020)\n4. V.D. Burkert\, L. Elouadrhiri\, K.P. Adhikari et al. Nuclear Inst. and Methods in Physics Research\, A 959\, 163419 (2020) .\n\nhttps://events.sinp.msu.ru/event/8/contributions/328/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/328/ END:VEVENT BEGIN:VEVENT SUMMARY:CROSSING ROTATIONAL BANDS IN SUPERHEAVY EVEN-EVEN NUCLEI DTSTART;VALUE=DATE-TIME:20220714T080000Z DTEND;VALUE=DATE-TIME:20220714T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-600@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Efimov (PTI A.F. I.)\nFor even-even nuclei \, with the exception of the only\, in yrast bands there is no manifestat ion of the reverse bending of the moment of inertia from the square of rot ation frequency (back-bending). This leads to the possibility of reproduci ng the level energies of yrast bands up to spins values in the framework of the IBM1 phenomenology [1]. In present report the structure of the yra st band states was calculated within the framework of the microscopic vers ion of IBM1 [2\,3]\, where bosons with large spins up to were used. The calculation was carried out for \, since only for it the values of were measured up to high spins. The mapping of phonons to bosons is carried out by the traditional way. The wave functions in the boson representation ha ve the form where are wave functions containing a superposition of -b osons only. Moreover\, the collectivization is so strong that the number o f quadrupole bosons in for the ground state. The Hamiltonian is taken i n the form where is the IBM1 Hamiltonian with parameters obtained fro m -phonons and taking into account renormalizations due to \, non-collec tive phonons\, − energies of -bosons. The parameters that dete rmine the boson operators are calculated based on the microscopic procedur e. This leads to precise reproduction of energies up to spin with an err or not exceeding a few keV. As can be seen from the presented figure\, the reproduction of the values by using the IBM1 phenomenology [1] correspo nds to the experiment. The composition of the wave functions is presented in the following figure and it shows a smooth replacement of the collectiv e component\, built only from -bosons\, by components that include high-s pin pairs or -bosons with momentums Such smooth replacement explains t he absence of the back-bending and the smooth dependence of on spin.\n\n https://events.sinp.msu.ru/event/8/contributions/600/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/600/ END:VEVENT BEGIN:VEVENT SUMMARY:SIZE ISOMERS IN LIGHT NUCLEI DTSTART;VALUE=DATE-TIME:20220712T093000Z DTEND;VALUE=DATE-TIME:20220712T095000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-583@events.sinp.msu.ru DESCRIPTION:Speakers: Alla Demyanova (NRC KURCHATOV INSTITUTE)\nThe size o f a nucleus defined by the radius of its nucleon (proton and neutron) dens ity distribution and the proton charge distribution is one of the most fun damental and important nuclear characteristics. Nuclear radius determines the basic properties of nuclei and is a consequence of the fundamental fea tures of the strong interaction.\nThe development of methods of measuring the radii of nuclei in their short-lived excited states led to discovery o f new classes of states\, which were named “the size isomers”.\nUp to now two groups of the size isomers were identified: the excited states wit h halos ($^{9}$Be\, $^{11}$Be\, $^{13}$C\, $^{13}$N) and some specific alp ha cluster states ($^{11}$B\, $^{12}$C\, $^{13}$C). All the observed state s are diluted\, however\, some indication to possible existence of more co mpact than the ground states was obtained as well (in $^{13}$C).\nThe phen omenon of size isomerism occurred to be not a rare one especially if one t akes into account that rotational bands are based on some of such states. The structure of size isomers is related with some new features\, e.g.\, r otating halos\, halos in continuum\, different types of quasimolecular con figurations. Some rudimentary signs of alpha particle condensation (a “g host“of condensate) were observed (in the Hoyle state of $^{12}$C)\, ho wever\, one cannot speak about confirmation of this ambitious theory.\n\nh ttps://events.sinp.msu.ru/event/8/contributions/583/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/583/ END:VEVENT BEGIN:VEVENT SUMMARY:High-performance optimization of the software for experimental dat a decoding in BM@N NICA experiment DTSTART;VALUE=DATE-TIME:20220714T145000Z DTEND;VALUE=DATE-TIME:20220714T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-330@events.sinp.msu.ru DESCRIPTION:Speakers: Sergei Nemnyugin (Saint-Petersburg State University) \nIn the BM@N (Baryon Matter at Nuclotron) experiment at NICA accelerator complex in Joint institute for Nuclear Research (Dubna\, Russia) study of collisions of isospin symmetric nuclei with fixed targets is performed [1] . Efficient software environment plays key role in the BM@N experimental p rogram. The BmnRoot software package is used for both simulation and event reconstruction of simulated and experimental data. Special attention is t o the BmnRoot performance optimization [2]. The present report is devoted to performance optimization of the experimental data decoding module of th e BmnRoot software package. Most time-consuming hotspots of the decoder ha ve been localized. Vectorization of these hotspots improved performance of most time-consuming decoder functions by 1.25-2 times. As a consequence\, total time of execution is improved by 15-20%. Quality assurance demonst rated correctness of optimization.\n\n1. D. Baranov\, M. Kapishin\, T. Mam ontova\, G. Pokatashkin\, I. Rufanov\, V. Vasendina\, and A. Zinchenko\, “The BM@N experiment at JINR: Status and physics program” in Proceedin gs of the 3rd International Conference on Particle Physics and Astrophysic s (ICPPA)\, Moscow\, Russia\, 2017\, Ed. by P. Zarubin\, I. Selyuzhenkov\, and A. Taranenko (Moscow\, 2018)\, pp. 291—296.\n2. A.V.Driuk\, A.A.Iuf riakova\, N.E.Kakhanovskaya\, K.I.Mashitsin\, S.P.Merts\, S.A.Nemnyugin\, V.A.Roudnev. Development and Software Implementation of Optimal Algorithms for Event Reconstruction\, Evaluation of the Quality of Event Reconstruct ion and Simulation of Detector Components in the BM@N Experiment. Physics of Particles and Nuclei\, 2021\, v. 52. Iss. 4\, pp. 808–816.\n\nhttps:/ /events.sinp.msu.ru/event/8/contributions/330/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/330/ END:VEVENT BEGIN:VEVENT SUMMARY:POSSIBLE PHYSICS STUDIES AT THE FIRST STAGE OF THE NICA SPD PROGR AMME DTSTART;VALUE=DATE-TIME:20220714T080000Z DTEND;VALUE=DATE-TIME:20220714T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-606@events.sinp.msu.ru DESCRIPTION:Speakers: Yuriy Uzikov (JINR\, M.V. Lomonosov MSU\, Dubna Stat e University)\nIn the talk will be done a review of suggestions for experi ments with usage of the Spin Physics Detector (SPD) at the first stage o f the NICA SPD Programme developing in JINR [1]. Double polarized pp\, dd and pd collisions at c.m.s. NN energies of 3-10 GeV\, which will be accessible at the initial stage of the planned experiments\, allow one to study spin dependence of the NN interaction\, search for multiquark states at double strangeness\, charm and beauty thresholds\, study the s hort range structure of the deuteron and color transparency phenomenon. Furthermore\, double polarized pd scattering offers a possibility to t est the Standard Model through the search for T-invariance violation.\n\ n\n[1]. V.V. Abramov et al. \, Phys. Part. Nucl. 52\, 1044 (2021)\; 2102. 08477 [hep-ph]\n\nhttps://events.sinp.msu.ru/event/8/contributions/606/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/606/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDYING THE DOSE LOAD ON THE RESPIRATORY SYSTEM FROM HEAVY NATURA L RADIONUCLIDES DURING TOBACCO SMOKING DTSTART;VALUE=DATE-TIME:20220713T074000Z DTEND;VALUE=DATE-TIME:20220713T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-332@events.sinp.msu.ru DESCRIPTION:Speakers: Mirgul Bigeldiyeva (al-Farabi Kazakh National Univer sity)\nAccording to the ICRP (publications No. 50 and No. 65)\, radon and its decay products (Rn-DP) contribute more than 50% to the total radiation background. In Kazakhstan\, cancer incidence rates remain among the highe st among the CIS countries [1-2] and 28831 new cases were detected in 2020 [3]. Currently\, it has been proven that the main cause of lung cancer is smoking [4]. However\, despite the fact that the first place as a cause o f lung cancer is occupied by tobacco smoking\, the second place is occupie d by the inhalation of radon and Rn-DP. Toxic chemicals in tobacco smoke a re one reason why cigarettes cause cancer\, but radioactive heavy elements also play a significant role in them. They accumulate in tobacco leaves a t the time of their vegetation due to absorption from the soil and air\, a nd the rate of absorption depends on the pH of the soil. The decay product of radon\, Pb-210\, plays an important role in human radiation exposure\, since it has a long residence time in the body [5]. This contributes to a n increase in the dose of internal radiation and increases risk of lung ca ncer. For this reason\, conducting studies on the quantitative assessment of the concentration of natural beta-radionuclides in the lungs due to smo king as one of the causes of the carcinogenic effect is an urgent task. \n In this work\, the authors performed a quantitative assessment of the conc entration of natural beta-radionuclides in six samples of the most popular tobacco products in the Kazakhstan. The beta activity concentrations of t he samples were measured by beta spectrometry using a scintillation detect or. The results of the preliminary analysis of this work show that the low er threshold for the activity of beta-radionuclides in the tobacco of one cigarette is 60 mBq. A person who smokes one pack a day (20 cigarettes) in hales an average of 120 mBq. The annual effective doses were calculated ba sed on the intake of Pb-210\, as having the greatest danger among other be ta radionuclides\, and amounted to 39 µSv/year for a person who smokes on e pack per day.\nThis research is funded by the Science Committee of the M inistry of Education and Science of the Republic of Kazakhstan (Grant No. AP09058404).\n\n1. A. Jemal\, R. Siegel\, and K. Miller\, C.A. Cancer. J. Clin. 66(1)\, 7 (2016).\n2. Indicators of the oncological service of the R epublic of Kazakhstan for 2019 https://onco.kz/o-rake/ponimanie-raka/stati stika-raka/\n3. J. Ferlay\, M. Ervik\, F. Lam\, M. Colombet\, Global Cance r Observatory. Lyon\, France: International Agency for Research on Cancer. Available from: https://gco.iarc.fr/today \n4. K. Nurgaziev\, G. Seitkazi na\, D. Baypeisov\, G. Seisenbaev\, and A. Zhylkaidarova\, Indicators of o ncology service in the Kazakhstan for 2017. Almaty: KazIOR\, 2017. 138 p.\ n5. B. Swift\, Forensic Sci. Int. 98\, 119 (1998).\n\nhttps://events.sinp. msu.ru/event/8/contributions/332/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/332/ END:VEVENT BEGIN:VEVENT SUMMARY:THE MODEL FOR DESCRIBING THE WIDTH OF DOUBLE GAMMA DECAY OF THE QU ADRUPOLE STATE OF SPHERICAL NUCLEI DTSTART;VALUE=DATE-TIME:20220714T103000Z DTEND;VALUE=DATE-TIME:20220714T110000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-603@events.sinp.msu.ru DESCRIPTION:Speakers: Alexey Severyukhin (BLTP\, JINR)\nTo describe the γ γ-decay\, a formalism relates the electromagnetic interaction up to secon d order in the electromagnetic operators and two-quantum processes in atom ic nuclei. In Ref.[1]\, the γγ-decay of a nuclear transition in competit ion with an allowed γ-decay has been discovered. This is the observation of the γγ-decay of the first excited $J^{π}$=$11/2^-$ state of $^{137}$ Ba directly competing with an allowed γ-decay to the $J^{π}$=$3/2^+$ gro und state. The branching ratio of the competitive γγ-decay of the $11/2^ -$ isomer of the odd-even nucleus 137Ba to the ground state relative to it s single γ-decay was determined to be $(2.05±0.37)×10^{-6}$. This d iscovery has very recently been confirmed and the data were made more prec ise\, in particular with respect to the contributing multipolarities [2]. \n This paper reports on the situation\, in which the γγ-decay of the low-energy quadrupole state of the even-even nucleus occurs in a nuclear t ransition which could proceed by a single γ-decay in competition. The cou pling between one-\, two- and three- phonon terms in the wave functions of excited nuclear states is taken into account within the microscopic model based on the Skyrme energy density functional.\n It is shown that the γ γ-decay width is sensitive to the interaction between one- and two-phonon configurations in the giant dipole resonance region [3]. The maximal bran ching ratio of the competitive γγ-decay relative to its single γ-decay is predicted for $^{48}Ca$ as $3×10^{-8}$. This prediction can be tested experimentally. \n\n1. C.Walz et al.\, Nature. 526\, 406 (2015).\n2. P.-A. Söderström et al.\, Nature Commun. 11\, 3242 (2020). \n3. A.P. Severyu khin\, N.N. Arsenyev\, N. Pietralla\, Phys. Rev. C. 104\, 024310 (2021).\n \nhttps://events.sinp.msu.ru/event/8/contributions/603/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/603/ END:VEVENT BEGIN:VEVENT SUMMARY:HIGH-POWER ELECTON ACCEERATORS FOR THE PRODUCTION OF MEDICAL RADIO ISOTOPES DTSTART;VALUE=DATE-TIME:20220715T074000Z DTEND;VALUE=DATE-TIME:20220715T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-335@events.sinp.msu.ru DESCRIPTION:Speakers: Andrey Ermakov ()\nIn present time there is a tenden cy to avoid nuclear reactors in favor of electron accelerators as the main instrument for the production of medical radioisotopes. The report is dev oted to high-power industrial accelerators developed by different manufact urers\, including Laboratory of Electron Accelerators MSU Ltd. The main re quirements for an electron beam are considered based on the existing metho ds of the radioisotopes production. The advantages and disadvantages of va rious schemes of high-power accelerators\, beam transportation systems\, a nd other are discussed in the article.\n\nhttps://events.sinp.msu.ru/event /8/contributions/335/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/335/ END:VEVENT BEGIN:VEVENT SUMMARY:THE PRESSURE EFFECT ON CRYSTAL AND MAGNETIC STRUCTURES OF VAN DER WAALS MATERIALS DTSTART;VALUE=DATE-TIME:20220713T132000Z DTEND;VALUE=DATE-TIME:20220713T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-333@events.sinp.msu.ru DESCRIPTION:Speakers: O.N. Lis (FLNP JINR)\nThe recent discovery of magnet ic ordering in van der Waals (vdW) materials down to the monolayer limit h as opened a new direction in the field of two-dimensional materials\, allo wing researchers to explore magnetism in lower dimensions in simple crysta l systems. The advent of long-range 2D ferromagnetism brings about new tra nsport phenomena in two dimensions\, like tunneling magnetoresistance and electrical switching of magnetic states promoting 2D ferromagnets as versa tile platforms for engineering new quantum states and device functionaliti es. CrBr3 and Fe3GeTe2 are also one of the brightest representatives of th is class of materials\, which also attract the attention of researchers be cause of the various observed physical phenomena. The knowledge of relatio nship between magnetic and crystal structure of such compounds\, which can be obtained from high-pressure investigations\, is very essential for und erstanding the nature and mechanism of physical phenomena observed in it.\ nThe present work focuses on the investigations of crystal and magnetic st ructures of CrBr3 and Fe3GeTe2 in wide temperature and pressure ranges. De tailed studies of the crystal structure of the materials were carried out using neutron diffraction on a DN-6 diffractometer of a pulsed high-flux I BR-2 reactor (FLNP\, JINR\, Dubna\, Russia) in temperature range of 6-300 K and at pressure up to 5 GPa. Neutron diffraction investigations of CrBr3 revealed to observe the formation of the long-range ferromagnetic order w hich leads to the negative thermal volume expansion and anomalous thermal variation of interatomic distances and angles\, caused by the spin-lattice coupling. Related effects were found in vibrational spectra of this compo und. Noticeable anomalies near the Curie point are observed on the tempera ture dependences of Raman peak frequencies as well as on their full-width at half-maximum which indicates the strong spin-phonon coupling in CrBr3. The high pressure effect made it possible to identify unusual changes in t he diffraction spectra and changes of Raman modes\, which may be associate d with a phase transition in CrBr3. It was also obtained the evolution of the unit cell parameters\, bond lengths under high pressure. The X-ray dif fraction of Fe3GeTe2 at high pressure revealed anomalies on the baric beha vior of structural parameters without clearable structural transition with changing the symmetry. The vanishing of the vibrational modes of Fe3GeTe2 at high pressures and low temperature can be caused by the suppression of the long-range magnetic order.\n\nhttps://events.sinp.msu.ru/event/8/cont ributions/333/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/333/ END:VEVENT BEGIN:VEVENT SUMMARY:INTERPRETATION OF THE INCOMPLETE FUSION OF NUCLEUS AS A QUASIFISSI ON OF DINUCLEAR SYSTEM DTSTART;VALUE=DATE-TIME:20220714T100000Z DTEND;VALUE=DATE-TIME:20220714T103000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-610@events.sinp.msu.ru DESCRIPTION:Speakers: Avazbek Nasirov ()\nThe strong dependence of the cor relation between energy and angular distributions of the observed alpha-pa rticles in heavy ion collisions on the beam energy shows the importance of the impact parameter in the incomplete fusion [1\,2]. The complete fusion of the interacting nuclei is transfer of all nucleons in light projectile to the target nucleus. This process may be hindered by the intrinsic fusi on barrier B*fus [3]\, which increases sharply for small mass numbers A in collisions with large impact parameter: the fusion probability strongly d ecreases when the excitation energy E*DNS of the dinuclear system (DNS) is smaller then B*fus. As a result\, the DNS may emit the alpha-particle or heavier clusters during rotation around the axis at its the center-of-mass of DNS which is perpendicular to the R vector connecting fragments centre s. This process is observed as the yield of the clusters in the incomplete fusion. The probability of the cluster formation emission is calculated b y solution of the transport master equation [3] and the probability of its emission is calculated as a tunneling through the quasifission barrier B* qf [3]\, which is determined by the height of the potential well of the in teraction between DNS fragments. The partial cross section of the incomple te fusion accompanying by the alpha-particle emission shows that its max imum has the shape of the Gaussian function with the maximum at the values of the orbital angular momentum L=35−50  as a function of the beam e nergy Elab.\n\nhttps://events.sinp.msu.ru/event/8/contributions/610/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/610/ END:VEVENT BEGIN:VEVENT SUMMARY:Influence of cluster structure to the mechanism of nuclear reactio ns DTSTART;VALUE=DATE-TIME:20220712T080000Z DTEND;VALUE=DATE-TIME:20220712T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-650@events.sinp.msu.ru DESCRIPTION:Speakers: Talgat Issatayev (JINR)\nIn the interaction reaction s of weakly bound cluster nuclei\, the structure of these nuclei can manif est itself with a high probability. It is expressed in cross sections for these processes\, in particular\, in the multinucleon transfer reaction an d the transfer reaction of individual clusters [1\,2].\nIn order to study the influence of the cluster structure on the mechanism of nuclear reactio ns\, we studied the interaction reactions 6Li+9Be\,12C at an energy of 68 MeV. The experiment has been performed at the U-400M cyclotron\, FLNR\, JI NR. The angular distributions of the products formed in these reactions we re measured in the range of 10-120 º in the c.m system. The following rea ction channels were studied: 9Be(6Li\,6Li)9Be\, 9Be(6Li\,7Li)8Be\, 9Be(6Li \,6He)9B\, 9Be(6Li\, 4He)11B\, 12C(6Li\,6Li)12C\, 12C(6Li\,7Be )11B in gro und and excited states. The obtained experimental data were analyzed withi n the framework of the optical model and the DWBA method [3].\n\n\n\n\n\n\ n1. Yu E Penionzhkevich\, R.G. Kalpakchieva\, Light Exotic Nuclei Near the Boundary of Neutron Stability\, World Scientific Publishing Co Pte L td (2021)\n2. Yu E Penionzhkevich\, et.al\, Eur. Phys. J. A 31\, 185-194 ( 2007)\n3. NRV web knowledge base on low-energy nuclear physics.http://nrv. jinr.ru/.\n\nhttps://events.sinp.msu.ru/event/8/contributions/650/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/650/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF 209Bi(γ\,xn) REACTIONS IN ENERGY REGION UP TO 100 MeV DTSTART;VALUE=DATE-TIME:20220712T122000Z DTEND;VALUE=DATE-TIME:20220712T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-506@events.sinp.msu.ru DESCRIPTION:Speakers: Mikhail Demichev (JINR)\nIn order to follow relative yields of 209Bi(γ\,xn) reactions\, samples of natural bismuth were expos ed in LINAC 200 bremsstrahlung beam at several different energies (40 MeV\ , 60 MeV\, 80 MeV and 100 MeV). Activities of eight obtained products of p hotonuclear reactions with different neutron multiplicity\, from (γ\,2n) to (γ\,9n) were detected. Relative yields were calculated for all of the m. All measurements were normalized on 206Bi yield.\n\nObtained yields wer e compared with the results already available in literature. The data in t he literature are not very abundant and in some cases the yields differ by a two orders of magnitude. In all measurements\, including this one\, it was confirmed that the reaction yield decreases very sharply with the num ber of neutrons emitted. It has also been observed that for a given multip licity of neutrons\, the relative yield does not depend significantly on m aximal energy of the bremsstrahlung. \n\nYields obtained by measurements a re compared with the results of theoretical calculations. Calculation have been performed using the combination of evaporation and exciton models [1 ]. The level densities employed in the model have been calculated microsco pically to take into account shell effects and their dependence on excitat ion energy [2].\n\n[1] B. S. Ishkhanov and V. N. Orlin\, Physics of Atomic Nuclei 71\, No. 3\, pp. 493–508 (2008).\n[2] A.Rahmatinejad\, A.N.Bezb akh\, T.M.Shneidman\, G.Adamian\, N.V.Antonenko\, P.Jachimowicz\, M.Kowal\ , Phys.Rev. C 103\, 034309 (2021).\n\nhttps://events.sinp.msu.ru/event/8/c ontributions/506/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/506/ END:VEVENT BEGIN:VEVENT SUMMARY:Influence of the entrance channel asymmetry on the fission propert ies of excited 180Hg nuclei DTSTART;VALUE=DATE-TIME:20220712T072000Z DTEND;VALUE=DATE-TIME:20220712T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-611@events.sinp.msu.ru DESCRIPTION:Speakers: Kirill Kulkov (JINR)\nInfluence of the entrance chan nel asymmetry on the fission properties of excited $^{180}$Hg nuclei \n\nK .A. Kulkov$^{1\,2}$\, E.M. Kozulin$^{1\,2}$\, A.A. Bogachev$^1$\, G.N. Kny azheva$^{1\,2}$\, I.M. Itkis$^1$\, K.V. Novikov$^{1\,2}$\, I.V. Vorobiev$^ 1$ \n$^1$Flerov Laboratory of Nuclear Reactions\, Joint Institute for Nucl ear Research (JINR)\, Dubna\, Moscow oblast\, 141980 Russia\n$^2$Dubna Sta te University\, Dubna\, Moscow oblast\, 141982 Russia\nE-mail: kulkov@jinr .ru\n\nFission of the pre-actinide nuclei is characterized as predominantl y symmetrical even at low excitation energies. Recently\, in experiments o n the β$^+$-delayed fission of the $^{180}$Tl nucleus [1]\, an asymmetric mass distribution of the fission fragments of its daughter nucleus $^{180 }$Hg with an excitation energy\nE$^*$<10.8 MeV was found. Note that the fo rmation of two fragments – semimagic nuclei $^{90}$Zr (N = 50\, Z = 40) – should be expected in the symmetric fission of this strongly neutron-d eficient nucleus. However\, the formation of a light fragment with a mass of 80 u and a heavy one of 100 u was found in the fission of $^{180}$Hg. T herefore\, the study of the fission properties of pre-actinide nuclei is e xtremely important. \nThus\, we propose to study reactions $^{36}$Ar+$^{14 4}$Sm and \n$^{90}$Zr+$^{90}$Zr\, leading to the formation of the compound nucleus 180Hg in the wide range of excitation energies. In the $^{36}$Ar+ $^{144}$Sm reaction fusion-fission and fast fission are observed. Special M-TKE matrix subtraction procedure [2] allowed to separate these two proce sses. The reaction $^{90}$Zr+$^{90}$Zr was measured in wide energy range. The mass asymmetry of the entrance channel in this reaction is equal to 0. At high incident energies all three possible reaction mechanisms - fusion -fission\, quasifission and fast fission - contribute to the M-TKE distrib utions of the fissionlike reaction products. The separation of the two-dim ensional M-TKE distributions of binary fragments corresponding to differen t reaction mechanisms allowed to obtain the main characteristics of each p rocess. Double-arm time-of-flight spectrometer CORSET was used to measure M-TKE distributions.\n\n 1. A.N. Andreyev\, J. Elseviers\, M. Huyse et al. \, Phys. Rev. Lett. 105\, 252502 (2010).\n 2. E.M. Kozulin et al.\, Phys. Lett. B 819 (2021) 136442.\n\nhttps://events.sinp.msu.ru/event/8/contribut ions/611/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/611/ END:VEVENT BEGIN:VEVENT SUMMARY:PIK reactor complex DTSTART;VALUE=DATE-TIME:20220716T091500Z DTEND;VALUE=DATE-TIME:20220716T095000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-641@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Voronin (NRC "Kurchatov institute"-PNPI)\nA review of the parameters and the state of affairs in the construction of the one of the most powerful neutron sources the PIK research reactor (Nat ional Research Center “Kurchatov Institute” - PNPI\, Gatchina\, Russia ) will be presented.\nThe PIK reactor is a neutron source with record para meters\, designed to become the flagship of neutron research in Russia. It is a pressurized vessel reactor\, where light water (H2O) is used as a co olant\, and heavy water (D2O) as a neutron reflector and moderator. The ma in design characteristics of the reactor are as follows [1]:\n- Thermal po wer - 100 MW\;\n- The volume of the reactor core - 50 liters\n- Thermal ne utron flux in the moderator - 1.2 10^15n/cm^2s\;\nTo extract neutron from the moderator\, as well as to irradiate samples\, the PIK reactor is equip ped with a significant number of experimental channels.\nThe central exper imental channel (CEC) is located in the water cavity of the reactor core. The thermal neutron flux density in the cavity is 5 1015n/cm2s\;\n- Horizo ntal experimental channels (HEC) – 9 items\;\nThermal neutron fluxes at the channel bottoms (0.1−1.2) 10^15 n/cm^2s\nThermal neutron fluxes at t he exit of channels (0.2−3) 10^11 n/cm^2s\nChannel diameters - 100−250 mm\n- Inclined experimental channels (NEC) - 6 items\;\nThermal neutron f luxes at the bottoms - (0.2−1) 10^15 n/cm^2s\nCurrently\, the PIK reacto r is under commissioning with the scheduled step-by-step increasing the po wer\, the 5 “first-day” neutron scattering instruments have been put i nto operation\, and the first experiments are being carried out. \nThis fa cility will determine the development strategy for neutron research in the Russian Federation for several decades and will become the basis of the I nternational Center for Neutron Research [2].\n\n\n[1] Kovalchuk\, M. V.\, Smolskiy\, S. L.\, & Konoplev\, K. A. Research Reactor PIK. Crystallograp hy Reports\, 66(2) (2021) 188-194 \n\n[2] Kovalchuk\, M.V.\, Voronin\, V.V .\, Grigoriev\, S.V. et al. Instrument Base of the Reactor PIK. Crystallog r. Rep. 66\, 195–215 (2021)\n\nhttps://events.sinp.msu.ru/event/8/contri butions/641/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/641/ END:VEVENT BEGIN:VEVENT SUMMARY:INCOHERENT NEUTRAL PION PHOTOPRODUCTION ON THE TENSOR-POLARIZED DE UTERON AT VEPP-3 DTSTART;VALUE=DATE-TIME:20220713T072000Z DTEND;VALUE=DATE-TIME:20220713T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-339@events.sinp.msu.ru DESCRIPTION:Speakers: Vyacheslav Gauzshtein ()\nThe results of measurement of the T20 component tensor analyzing powers in incoherent π0-meson phot oproduction on the deuteron in the proton energy range of 50–150 MeV are presented. Experimental statistics of the reaction under study was isolat ed from the experiment that was designed to investigate coherent neutral p ion photoproduction on deuteron [1-3]. In this experiment\, protons and t wo photons were recorded by the upper and lower arms of the detecting syst em\, respectively. The measured asymmetries of the yields with regard to t he change in the sign of tensor polarization of deuterons were used to cal culate the T20 component of the tensor analyzing power of the reaction und er investigation. A detailed description of the experimental setup and det ection equipment is provided in [1- 3]. \nThe obtained experimental data a re compared with the results of statistical simulation. The event generati on was followed by verification that it belongs to the permissible region of the kinematic phase space. After the generation of independent kinemati c variables\, the reaction amplitude was calculated. The model described i n [4] was used to calculate the amplitude of the neutral pion photoproduct ion. In the framework of the model\, the quasi-free pion photoproduction o n nucleons that form the deuteron and the contribution of nucleon-nucleon and pion-nucleon rescattering were considered. The measurements cover the photon energy range of (300-600) MeV. In general\, there is a qualitative agreement between experimental and available theoretical predictions. It i s planned to give further attention to extraction of the experimental data on the reaction from the experimental statistics accumulated at VEPP-3 in 2021 using the photon tagging system.\n\n\n1. Rachek I.A. er al. // Few-B ody Syst. 2017. V. 58. P. 28\n2. Gauzshtein V.V. et al. // European Physic al Journal A. 2020. V.56. P.169.\n3. Gauzshtein V.V. et al. // Modern Phys ics Letters A. 2021. V. 36. P. 2150199\n4. Fix A.\, Arenhövel H. // Phys. Rev. C. 2005. V. 72. P. 064005.\n\nhttps://events.sinp.msu.ru/event/8/con tributions/339/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/339/ END:VEVENT BEGIN:VEVENT SUMMARY:ADAPTIVE RADIATION THERAPY METHOD USING CONE BEAM COMPUTED TOMOGRA PHY DTSTART;VALUE=DATE-TIME:20220712T141000Z DTEND;VALUE=DATE-TIME:20220712T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-340@events.sinp.msu.ru DESCRIPTION:Speakers: A. Lisovskaya ()\nThere are situations at prolonged treatment when patient loses weight\, tumor changes its size or new lesion s appear. In this case adaptive radiation therapy (ART) is necessary. This concept takes into account the changes of patients’ parameters and invo lves the recalculation of the treatment plans using new set of images. In this phantom study the ART method with using cone-beam computed tomography (CBCT) was developed.\nCBCT doses for head and neck\, chest and pelvis si tes were calculated for small and big size of the heterogenic phantoms [1] . Deviation between the calculated CBCT doses and the reference doses was determined. The long-term stability of the ratio between Hounsfield Units and Relative Electron Density (HU-RED) for CBCT was investigated [2].\nThe deviation of the average dose in the target\, for the plans on the CBCT w ith HU-RED for corresponding size and protocol\, from the reference dose w as less than 0.5 % and 1.5 % for pelvis and head and neck\, respectively. For lung the deviation of the average dose in the target is 2 % from the r eference dose only using the methods of the HU-RED correction.\nHU-RED cur ves for XVI Elekta Synergy have good long-term stability.\nThe ART method using the CBCT was developed using X-Ray Volume Imaging (XVI) Elekta Syner gy. This method allows to estimate consequences of pediatric patients’ a natomy changes and to recalculate new radiotherapy plans without additiona l scanning on the computed tomography (CT).\n\n1. Dunlop A.\, McQuaid D.\, Nill S. et al. Comparison of CT number calibration techniques for CBCT-ba sed dose calculation. // Strahlentherapie und Onkologie. 2015. V. 191. P. 970-978.\n2. Rong Y.\, Smilowitz J.\, Tewatia D. et al. Dose calculation o n kv cone beam CT images: An investigation of the HU-Density conversion st ability and dose accuracy using the site-specific calibration. // Medical Dosimetry. 2010. V. 35. I. 3. P. 195-207.\n\nhttps://events.sinp.msu.ru/ev ent/8/contributions/340/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/340/ END:VEVENT BEGIN:VEVENT SUMMARY:SMOOTHNESS OF MASS SURFACE OF ODD ACTINIDE NUCLEI AND PAIRING ENER GIES DTSTART;VALUE=DATE-TIME:20220714T151500Z DTEND;VALUE=DATE-TIME:20220714T153500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-654@events.sinp.msu.ru DESCRIPTION:Speakers: A. K. Vlasnikov ()\nAs it was shown in [1\,2]\, the mass surface M of odd deformed atomic nuclei with 150 < A < 190 in the vic inity of a given number of protons can be described with good accuracy by the sum of two terms:\n μ–a Tailor series expansion up to the second or der by degrees of deviation of the number of nucleons from the given value s:\n PN (PZ) – neutron (proton) pairing energy\, depending on the state of odd nucleon.\nFor example\, for odd neutron number (N^' ) nuclei:\nM(N^ '\,Z)=μ(N^'\,Z)+P_N (N^'\,Z)\,\nhereafter the apostrophe denotes an odd n umber (N neutrons\, Z protons). \nA smooth part of the mass surface μ(N^' \,Z) can be defined from masses M(N^'+s^'\,Z+t) of a few adjacent even-eve n nuclei using the second-order decomposition:\nμ(N^'\,Z)=M(N^'+s^'\,Z+t) - s^' d_1n-td_1p-〖1/2 s〗^'2 d_2n-〖1/2 t〗^2 d_2p-std_(1n\,1p).\nThe re is some uncertainty in the values of μ(N^'\,Z)\,d_1n\,d_1p\,d_2n\,d_2p \,d_(1n\,1p) due to the different sets of reference even-even nuclei.\n The first set (s-approximation) includes masses of even-even nuclei with t he same Z and neutron numbers N^'±1\,N^'±3 . In this case t=0 and\nd_1n= [M(N^'+1\,Z)-M(N^'-1\,Z)]⁄2\;\nd_2n=[M(N^'+3\,Z)+M(N^'-3\,Z)-M(N^'+1\,Z) -M(N^'-1\,Z)]⁄2.\nThen μ(N^'\,Z)= M(N^'+1\,Z)-d_1n-d_2n⁄2.\nThe secon d set (st-approximation) uses reference even-even nuclei with charges Z±2 \,Z±4 and neutron numbers N^'±1\,N^'±3 so that the mass number of these nuclei differs from the mass number of odd nucleus under consideration by 1 or 3\, i. e. (N^'±1\,Z∓2)\, (N^'±1\,Z±2)\, (N^'±1\,Z∓4)\, (N^' ±3\,Z∓2). This approximation leads to another formulae for d_1n and d_2 n.\nThe calculations of these parameters for U and Th odd actinide nuclei have been conducted. The results show that values of d_1n and d_2n slightl y differ for different sets of reference even-even nuclei\, however the va lues of neutron pairing energies for both approximations are withing the e mpirical error limits.\n\n1. D.G. Madland and J.R. Nix\, Nucl. Phys. A 476 \, 1 (1988).\n2. A.K. Vlasnikov\, A.I. Zippa and V.M. Mikhajlov\, Bull. Ru ss. Acad. Sci.: Phys. 80\, 905 (2016)\; 81\, 1185 (2017)\; 84\, 919 (2020) \; 84\, 1191 (2020)\; 84\, 1309 (2020).\n3. https://www-nds.iaea.org/amdc/ \n\nhttps://events.sinp.msu.ru/event/8/contributions/654/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/654/ END:VEVENT BEGIN:VEVENT SUMMARY:RECENT PROGRESS IN DESCRIPTION OF NN SCATTERING WITH THE DIBARYON MODEL DTSTART;VALUE=DATE-TIME:20220715T080000Z DTEND;VALUE=DATE-TIME:20220715T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-257@events.sinp.msu.ru DESCRIPTION:Speakers: Olga Rubtsova (Lomonosov Moscow State University\, S kobeltsyn Institute of Nuclear Physics)\nWe review the recent results obta ined within the dibaryon model for NN interaction [1-4]. The model takes i nto account the formation of the intermediate six-quark (dibaryon) state i n each partial wave. The respective mechanism leads to an energy-dependent term in the interaction which reflects the coupling with the internal non -nucleonic channel.\n \nThe substantial progress in the description of ela stic and inelastic NN scattering in different partial channels has been ac hieved by taking into consideration the parameters of the dibaryon resonan ces found from experiments and partial wave analyses (PWA). As an illustra tion\, elastic and inelastic NN scattering amplitudes for all the lowest p artial configurations with the total angular momentum up to J = 3 are pres ented in comparison with the NN PWA data in a broad energy range from zero to Tp = 0.7-1.2 GeV. Simultaneously\, the model gives the dibaryon resona nce parameters very close to the experimental ones for the NN channels whe re the respective data exist and predicts new resonances in the NN channel s 3P1\, 1P1\, 3D2 and 1F3\, where dibaryon states have not been detected t o date. \n\nImportant inelastic processes such as pion production in NN sc attering can also be described within the model [3\,4]. The recent results for pion production with account of particular dibaryon resonances are di scussed as well. \n\n1. V.I. Kukulin et al.\, Phys. Lett. B 801\, 135146 (2020).\n2. V.I. Kukulin et al.\, Eur. Phys. J. A 56\, 229 (2020).\n3. O.A . Rubtsova\, V.I. Kukulin\, and M.N. Platonova\, Phys. Rev. D 102\, 114040 (2020).\n4. M.N. Platonova and V.I. Kukulin\, Phys. Rev. D 103\, 114025 ( 2021).\n\nhttps://events.sinp.msu.ru/event/8/contributions/257/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/257/ END:VEVENT BEGIN:VEVENT SUMMARY:PROBLEMS OF DESCRIPTION OF P-EVEN T-ODD ASYMMETRIES IN NUCLEAR FI SSION REACTIONS WITH THE EMISSION OF LIGHT PARTICLES IN THE FRAMEWORK OF T HE SEMICLASSICAL APPROACH DTSTART;VALUE=DATE-TIME:20220712T101000Z DTEND;VALUE=DATE-TIME:20220712T104000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-590@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitrii Lyubashevsky (Voronezh state university)\nIn [1–2]\, the coefficients of P-even T-odd asymmetries in the cross sec tions for nu-clear fission reactions by cold polarized neutrons with the e mission of light particles p were found\, expressed in terms of experime ntal particle count rates p in coincidence with light fission fragments fo r the directions of polarization vector either along or against the Y axis. For the theoretical description of these coefficients in the case of -particles us-ing the semiclassical method of trajectory calculations\, the formula [1] (1) was proposed. Its first term\, expressed through the rotation angle \, took into account the influence of the Coriolis in-ter action of the spin of a compound fissile system (CFS) rotating around an a xis perpendicular to its symmetry axis on the angular distributions of bot h fission fragments ( ) and -particles ( ). The appearance of the second term in (1) was based on the hypothesis [1] about the change in the angu lar distribution of -particles under the action of the Coriolis interacti on associated with the collective rotation of the CFS around the fission a xis\, which turns out to be possible when the axial symmetry of the CFS is violated due to taking into ac-count its collective transverse oscillatio ns\, in the vicinity of the rupture point. The coefficients calculated i n [1] using formula (1)\, for the positive values of the angles found in the trajectory method\, turned out to be in satisfactory agreement with t he corresponding ex-perimental coefficients [1] for target nuclei 233U\, 235U\, 239Pu и 241Pu. Formula (1) can be generalized to the case of emis sion of evaporative neutrons and -quanta\, taking into account the fact that the influence of two types of Coriolis interaction on the angular dis tribu-tions of these particles can be neglected\, since these interactions are small at the moment of emission of evaporative particles due to very large values of the moment of inertia CFS. This leads to the exclusion of the quantity in (1) and the replacement of the angle by the angle . T he coefficients calculated using the obtained formula turned out to be i n satisfactory agreement with similar experimental coefficients from [2] in the case of the 235U target nucleus\, but has opposite signs for the 2 33U target nucleus. The last result demontrates the need to look for an al ternative approach to the description of the coefficients \, different fr om the semiclassical approach.\n\nhttps://events.sinp.msu.ru/event/8/contr ibutions/590/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/590/ END:VEVENT BEGIN:VEVENT SUMMARY:Современные возможности ядерной ме дицины в кардиологии DTSTART;VALUE=DATE-TIME:20220712T070000Z DTEND;VALUE=DATE-TIME:20220712T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-645@events.sinp.msu.ru DESCRIPTION:Speakers: Simon Matskeplishvili (MSU)\n...\n\nhttps://events.s inp.msu.ru/event/8/contributions/645/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/645/ END:VEVENT BEGIN:VEVENT SUMMARY:Status of the MPD@NICA Project DTSTART;VALUE=DATE-TIME:20220716T070000Z DTEND;VALUE=DATE-TIME:20220716T073500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-642@events.sinp.msu.ru DESCRIPTION:Speakers: Viktor Riabov (JINR)\n...\n\nhttps://events.sinp.msu .ru/event/8/contributions/642/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/642/ END:VEVENT BEGIN:VEVENT SUMMARY:ELASTIC PROTON SCATTERING BY NUCLEI 7Ве AND 8В AT ENERGY 700 Me V DTSTART;VALUE=DATE-TIME:20220712T143000Z DTEND;VALUE=DATE-TIME:20220712T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-326@events.sinp.msu.ru DESCRIPTION:Speakers: Onlassyn Imambek ()\nIn this paper\, based on Glaube r's diffraction theory\, we analyze the results of a recent experiment [1] on the scattering of protons by 7Ве and 8В nuclei at an energy of 0.7 GeV/nucleon\, in the range of momentum transfer 0.002≤ |t|≤ 0.05 (Гэ В/с)2. The experiments were carried out by the GSI-PNPI collaboration (G ermany-Russia) on the GSI radioactive beam (Darmstadt\, Germany) in invers e kinematics.\nIn our calculations\, the internal state of the 7Ве and 8 В nuclei under study are described on the basis of (α-τ) two- and (α- τ-p) three-particle cluster models\, respectively. The wave functions of these nuclei [2]\, obtained on the basis of the above cluster models\, des cribe well their static characteristics.\nThe parameters of the elementary NN- and Nα-amplitudes required for our calculations are taken from other works. However\, there are currently no data on elementary Nτ amplitudes in the scientific literature. In this connection\, we separately consider ed elastic p3He scattering in the kinematic region in which it corresponds to our calculations for proton scattering by 7Be and 8B. We succeeded in describing satisfactorily the experimental data on p3He scattering [3]. Fu rther\, the calculation scheme used here was transferred to calculations o n p7Be and p8B scattering.\nOur calculations of proton scattering by 7Ве and 8В are in good agreement with the data of [1]. However\, these exper iments were performed for small scattering angles. We carried out calculat ions up to scattering angles of ~ 50° and determined the contributions to the cross section from one-\, two-\, and three-fold scattering. At small angles\, single scattering dominates\, the contribution of double scatteri ng is compared with it in the region of 25°. The contribution of triple s cattering in elastic p8B scattering appears at 40°. In the future\, it is planned to carry out similar calculations on the scattering of π- and K- mesons and to carry out a comparative analysis of the obtained calculation s.\nThis work is carried out within the framework of the scientific projec t АР08855589\n\n1. A.V. Dobrovolsky et al. / Distribution of nuclear mat ter in proton-rich 7Be and 8B nuclei by elastic scattering of protons of i ntermediate energies in inverse kinematics/ Nuclear Physics A 989 (2019) 4 0–58\n2. Dubovichenko S.B. (2011) Thermonuclear processes of the Univers e. Almaty\, Fesenkov V.G. Astrophysical Institute "NTsRT" NSA RK\, 402. (i n Russian).\n3. Abdramanova G.B.\, Imambek O.\, Nadir A.\, Myrzabaeva M. / Elastic scattering of protons on 3He nuclei at intermediate energies / Pr oceedings of the Academy of Sciences of the Republic of Kazakhstan 1 (341) (2022) 117-123\n\nhttps://events.sinp.msu.ru/event/8/contributions/326/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/326/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of yields and angular distributions of γ-quanta from the interaction of 14.1 MeV neutrons with oxygen\, phosphorus and sulfur n uclei DTSTART;VALUE=DATE-TIME:20220713T130000Z DTEND;VALUE=DATE-TIME:20220713T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-345@events.sinp.msu.ru DESCRIPTION:Speakers: Dimitar Grozdanov ()\nThe study of inelastic scatter ing of fast neutrons by atomic nuclei is of great importance for fundament al and applied neutron-nuclear physics. Reactions induced by neutrons are the unique source of information for describing the processes of strong in teraction between nucleons. Inelastic scattering processes are used to stu dy the characteristics of excited states of target nuclei [1]. The practic al use of the (n\,n'γ) reaction requires the expansion and refinement of experimental data on this process. Research on the inelastic scattering of fast neutrons has recently become more active in connection with new pros pects for the production of nuclear energy using fast neutron reactors.\nT he purpose of the experiment was to refine the available data on the yield s and angular distributions of γ-rays from inelastic scattering of 14.1 M eV neutrons by natural composition of oxygen\, phosphorus and sulfur nucle i. The work was carried out within the framework of the scientific program of the international TANGRA (TAgged Neutrons and Gamma RAys) project at F rank Laboratory of Neutron Physics of the Joint Institute for Nuclear Rese arch in Dubna (Russia).\nInelastic scattering was studied by the Tagged Ne utron Method [2]\, in which neutrons with an energy of 14.1 MeV produced i n the d(t\,a)n reaction are “tagged” by detecting alpha particles. Gam ma quanta from the (n\,n'γ) reaction were recorded by the “Romasha” m ultidetector system [3]. Experimental data are shown and discussed in comp arison with previously published data.\n\n 1. W. Hauser and H. Feshbach . The Inelastic Scattering of Neutrons\, Phys. Rev.\, 1952\, vol. 87\, p. 366.\, https://doi.org/10.1103/PhysRev.87.366\n 2. I.N. Ruskov\, Yu.N. Kopatch\, V.M. Bystritsky et al. Physics Procedia\, vol. 64\, 2015\, pp. 1 63-170\, ISSN 1875-3892\, https://doi.org/10.1016/j.phpro.2015.04.022.\n 3. D.N. Grozdanov\, N.A. Fedorov\, Yu.N. Kopatch et al. IJPAP vol. 58(05 )\, pp. 427-430\, 2020\, http://nopr.niscair.res.in/handle/123456789/54739 .\n\nhttps://events.sinp.msu.ru/event/8/contributions/345/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/345/ END:VEVENT BEGIN:VEVENT SUMMARY:Hydrogen Atom in Strong Elliptically Polarized Laser Fields within Discrete-Variable Representation DTSTART;VALUE=DATE-TIME:20220715T122000Z DTEND;VALUE=DATE-TIME:20220715T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-551@events.sinp.msu.ru DESCRIPTION:Speakers: Sara Shadmehri (Joint Institute for Nuclear Research )\nThe nondirect product discrete variable representation (npDVR) is devel oped for the time-dependent Schrödinger equation with non-separable angul ar variables and is applied to a hydrogen atom in elliptically polarized s trong laser fields. The 2D npDVR is constructed on spherical harmonics ort hogonalized on the 2D angular grids of the Popov and Lebedev 2D cubatures for the unit sphere [1]. With this approach we have investigated the dynam ics of a hydrogen atom initially in its ground state in elliptically pola rized laser fields with the intensity up to I=10^14 W/cm2 and wavelength o f λ=800 nm. For these parameters of the laser field and the entire range of ellipticity variation\, we have calculated the total excitation and io nization yields of the atom. The performed analysis of the method converge nce shows that the achieved accuracy of our calculations significantly exc eeds the accuracy of recent works of other authors relevant to the problem [2]\, due to the high efficiency of the 2D npDVR in approximating the ang ular part of the 3D time-dependent Schrödinger equation. We also propose a new simple procedure for infinite summation of the transition probabili ties to the bound states of the hydrogen atom in calculating the total exc itation yield and prove its accuracy by comparison with conventional metho ds. The obtained results show the potential prospects of the 2D npDVR for investigating atomic dynamics in even stronger laser fields\, where it is required to go beyond the dipole approximation and take into account relat ivistic effects.\nThe work was supported by the Russian Science Foundation under Grant No. 20-11-20257.\n1. S. Shadmehri\, S. Saeidian and V. S. Mel ezhik\, J. Phys. B 53\, 085001 (2020).\n2. X. Gao and X -M Tong\, Phys. Re v. A 100\, 063424 (2019).\n\nhttps://events.sinp.msu.ru/event/8/contributi ons/551/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/551/ END:VEVENT BEGIN:VEVENT SUMMARY:Studies of dense baryonic matter with the BM@N experiment at the N uclotron DTSTART;VALUE=DATE-TIME:20220716T073500Z DTEND;VALUE=DATE-TIME:20220716T081000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-643@events.sinp.msu.ru DESCRIPTION:Speakers: Sergei Merts (JINR)\nIn the near future\, the BM@N e xperiment at the Nuclotron at JINR in\nDubna will start a physics program with heavy ions including Au-beams at\nenergies up to 3.8 A GeV and intens ities up to 2⋅10^6 ions/s. The\nexperiment is devoted to measure observa bles sensitive to the equation\nof state of dense baryonic matter\, and to search for indications of a\nphase transition at high densities. To meet these goals\, the existing\nBM@N set-up will be upgraded with fast hybrid tracking system\, which\nincludes beam tracking detectors\, a large apertu re silicon tracking\nsystem\, GEM stations and cathode strip chambers. The measurement of the\nevent plane and centrality will be achieved with a fo rward hadron\ncalorimeter and granular hodoscopes. The physics program\, t he\nconfiguration of the upgraded BM@N set-up\, results of physics\nperfor mances studies will be presented.\n\nhttps://events.sinp.msu.ru/event/8/co ntributions/643/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/643/ END:VEVENT BEGIN:VEVENT SUMMARY:Potential splitting approach for scattering problem for few-body q uantum systems DTSTART;VALUE=DATE-TIME:20220715T101000Z DTEND;VALUE=DATE-TIME:20220715T103000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-415@events.sinp.msu.ru DESCRIPTION:Speakers: Evgeny Yarevsky (St Petersburg State University\, St Petersburg\, Russia)\n**Potential splitting approach for scattering probl em for few-body quantum systems**\nE.A. Yarevsky${}^1$\, S.L. Yakovlev${}^ 1$\n${}^1$St Petersburg State University\, St Petersburg\, Russia\; \nE-ma il: e.yarevsky@spbu.ru\n\nScattering problem for few-body quantum systems is of great importance for various fields of modern quantum physics. The c omplicated boundary conditions at large distances\, especially for slowly decreasing potentials\, represent the main difficulty for this problem [1] . While several methods have been developed for constructing solutions to the scattering problem\, mathematically sound and computationally effectiv e approaches are still in demand.\n\nWe present an approach based on split ting the reaction potential into a finite range part and a long range tail part to describe scattering in the case of the Coulomb interaction [2\,3] . The solution to the Schrödinger equation for the long range tail is use d as an incoming wave. The scattering problem is then reformulated into an inhomogeneous Schrödinger equation with asymptotic outgoing waves. This equation is solved with the exterior complex scaling technique. The develo ped approach has been illustrated with calculations of scattering processe s in few atomic and molecular systems.\n\n1. L.D. Faddeev\, S.P. Merkuriev \, Quantum Scattering Theory for Several Particle Systems. Kluwer\, Dordre cht (1993).\n2. M.V. Volkov\, E.A. Yarevsky\, S.L. Yakovlev\, Europhys. Le tt. 2015. V. 110. 30006.\n3. E. Yarevsky\, S.L. Yakovlev\, N. Elander\, J. Phys. B: At. Mol. Opt. Phys. 2017. V. 50. 055001.\n\nhttps://events.sinp. msu.ru/event/8/contributions/415/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/415/ END:VEVENT BEGIN:VEVENT SUMMARY:Determination of treatment efficiency of head-and-neck cancer base d on TCP model DTSTART;VALUE=DATE-TIME:20220712T143000Z DTEND;VALUE=DATE-TIME:20220712T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-347@events.sinp.msu.ru DESCRIPTION:Speakers: E.S. Sukhikh ()\nExternal beam radiotherapy based on volumetric modulated arc radiotherapy technic delivery is widely used for the treatment of the locally advanced head-and-neck cancer (LAHNC). There are some approaches of irradiation of LAHNC\, for example\, simultaneous integrated boost (SIB) and sequential boost (SEQ) [1]. Analysis of the dev eloped treatment plans based on tumour control probability (TCP) models (N iemierko’s TCP model [2]) could help to estimate expected efficiency of the developed plans and to find optimal treatment schemes with respect to total dose value\, fractional dose and overall treatment time (OTT). \nIn this study\, the simultaneous integrated boost VMAT (SIB-VMAT) plans and s equential boost VMAT (SEQ-VMAT) plans were developed and ​​obtained va lues of TCP based on the anatomical data of 11 patients.\nThe anatomical d ata of 11 patients with LAHNC (larynx\, oropharynx and oral cavity) were u sed. For each patient two treatment plans were developed\, SIB-VMAT (70 Gy to tumour\, 50 Gy to lymph nodes\, 25 fractions) and SEQ-VMAT (70 Gy to t umour\, 50 Gy to lymph nodes\, 35 fractions). The developed plans were ana lyzed using the Niemierko’s TCP model with Maciejewski's parameters (TCD 50=70.26 Gy) taking into account dose-volume histograms and OTT. \nThe dev eloped SIB-VMAT and SEQ-VMAT plans had the physical coverage of the CTV tu mours more than 97% of prescribed dose delivered to more than 97% of the v olume\, except one. The average TCP value of SIB-VMAT was equal to 99.9% d ue to short OTT. The average value of TCP for SEQ-VMAT was equal to 61.0%. For one patient\, the both SIB-VMAT and SEQ-VMAT plans showed zero expect ed efficiency due to CTV coverage 95%-95%.\nAccording to the Niemierko TCP model using Maciejewski's parameters\, the 50% efficiency of the treatmen t could be reached at EUD equal to EUD = 70.26 Gy\, when the prescription dose values higher than 71-72 Gy or 70 Gy delivered in less than 35 fracti ons. The analysis of selected clinical trials showed that the reported res ults of treatment efficiency rather well correspond to the model predictio ns. However\, the results of DVHs calculated for real patients' anatomical data showed that even small volumes of the tumour that were irradiated to doses less than 70 Gy in 35 fractions could significantly decrease the ex pected TCP value. The results of simulation and analysis of clinical pract ice show that the DVH of each patient should be analyzed on the expected T CP.\n1. Orlandi E\, Palazzi M\, Pignoli E\, Fallai C\, Giostra A\, Olmi P. Critical Reviews in Oncology/Hematology. 2010\; 73(2):111-125.\n2. Maciej ewski B\, Withers HR\, Taylor JMG\, Hliniak A. International Journal of Ra diation Oncology\, Biology\, Physics. 1989\; 16(3):831-843. \n3. Gay HA\, Niemierko A. Physica Medica. 2007\; 23(3-4):115-125.\n\nhttps://events.sin p.msu.ru/event/8/contributions/347/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/347/ END:VEVENT BEGIN:VEVENT SUMMARY:Yields of the r-process in neutron star merger ejecta and its sens itivity to nuclear mass model choice DTSTART;VALUE=DATE-TIME:20220713T153000Z DTEND;VALUE=DATE-TIME:20220713T155000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-651@events.sinp.msu.ru DESCRIPTION:Speakers: Vasily Negrebetskiy ()\nThe astrophysical r-process of nucleosynthesis is widely considered to explain the production of major amount of nuclei beyond the iron peak. This nucleosynthesis mechanism pos es great interest to both astrophysics and nuclear physics. Taking place a t temperatures above 1 GK and very high densities\, it is believed to occu r in extreme astrophysical scenarios\, such as neutron star mergers and su pernova blasts. Thus the main approach in r-process study is computer simu lation.\n\nNuclei that take part in r-process reaction chains are exotic d ue to high neutron excess. To get their characteristics required by nucleo synthesis simulations theoretical nuclear models are used. We study the im pact of the nuclear mass model choice on the results of r-process calculat ion. Using three different theoretical mass tables [1\,2\,3] we have creat ed three libraries of astrophysical nuclear reactions based on REACLIB [4] database. We used them to simulate r-process in neutron star merger dynam ical ejecta with the help of the SkyNet [5] library. Obtained results show how our r-process simulation responds to the mass model variation.\n\nFig . 1. Theoretical r-process yields\, calculated with different nuclear mas s models\, compared to experimental nuclei abundances in the Solar System. \n\n\n1. P. Möller et al\, ADNDT 109\, 1 (2016).\n2. S. Goriely\, N. Cha mel\, J.M. Pearson\, Phys. Rev. C 88\, 024308 (2013).\n3. Е.В. Влад имирова и др.\, Изв. РАН. Серия Физическая 4\, 571 (2022).\n4. R.H. Cyburt et al\, ApJ 189\, 240 (2010).\n5. J. Lippu ner\, L.F. Roberts\, ApJS 233\, 18 (2017).\n\nhttps://events.sinp.msu.ru/e vent/8/contributions/651/ LOCATION: Физический ф-т\, 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/651/ END:VEVENT BEGIN:VEVENT SUMMARY:POSSIBILITIES TO IMPROVE VARIATIONAL CALCULATIONS USING OSCILLATO R BASIS DTSTART;VALUE=DATE-TIME:20220715T070000Z DTEND;VALUE=DATE-TIME:20220715T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-241@events.sinp.msu.ru DESCRIPTION:Speakers: Vasily Kulikov (Skobeltsyn Institute of Nuclear Phys ics\, Lomonosov Moscow State University)\nOscillator basis is widely used in nuclear structure studies\, e. g.\, within *ab initio* No-Core Shell Mo del (NCSM) [1]. A problem faced by the NCSM calculations is an exponential grows of the many-body basis dimension and of the number of non-zero Hami ltonian matrix elements which restricts the accuracy of the results and th e NCSM applicability to heavier nuclei. This difficulty can be overcome by using the complete Hamiltonian matrix up to some excitation quanta *N*_{m ax} and extending it to a larger excitation quanta *N'*_{max} by kinetic e nergy *T* matrix elements only (*T* extension). The *T* extension can be c onsidered as a simplified version of the Symmetry-Adapted NCSM (SA-NCSM) [ 2] which utilizes the Sp(3\,R) symmetry to extend the Hamiltonian matrix s ince T is one of the Sp(3\,R) generator. The *T*-extended Hamiltonian matr ix has an essentially smaller number of non-zero matrix elements and impro ves predictions for binding energies. The Hamiltonian matrix extended up t o infinite *N'*_{max} in a channel that is supposed to dominate in the asy mptotics of the wave function of bound state of interest\, can be used to calculate the S matrix by means of the HORSE formalism [3] and to locate n umerically its pole associated with the bound state that makes it possible to obtain a very accurate prediction for the binding energy and asymptoti c normalization coefficient (ANC). The utilization of the complete HORSE f ormalism within the NCSM is impractical because it requires calculation of extremely large number of the NCSM eigenstates\; however\, one can use it s simplified version SS-HORSE [4] to design an extrapolation technique for binding energies and ANC. An interesting and important convergence accele ration of the above approaches is the smoothing of potential energy matrix elements suggested in Ref. [5]. We illustrate the above possibilities usi ng a model problem.\n\n 1. B. R. Barrett\, P. Navrátil\, and J. P. Vary\, Prog. Part. Nucl. Phys. **69**\, 131 (2013).\n 2. K. D. Launey\, T. Dytry ch\, and J. P. Draayer\, Prog. Part. Nucl. Phys. **89**\, 101 (2016).\n 3. J. M. Bang\, A. I. Mazur\, A. M. Shirokov\, Yu. F. Smirnov\, and S. A. Za ytsev\, Ann. Phys. (N.Y.) **280**\, 299 (2000). \n 4. A. M. Shirokov\, A. I. Mazur\, I. A. Mazur and J. P. Vary\, Phys. Rev. C **94**\, 064320 (2016 ).\n 5. B. Gyarmati\, A. T. Kruppa\, and J. Révai\, Nucl. Phis A **326** \, 119 (1979).\n\nhttps://events.sinp.msu.ru/event/8/contributions/241/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/241/ END:VEVENT BEGIN:VEVENT SUMMARY:FLUCTUATIONS OF THE INDUCED CHARGE CAUSED BY FLUCTUATIONS OF THE X -RAY QUANTUM ABSORPTION POINT IN A PLANE-PARALLEL SEMICONDUCTOR DETECTOR DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-350@events.sinp.msu.ru DESCRIPTION:Speakers: Victor Samedov ()\nThe book [1] provides a formula f or fluctuations of the induced charge caused by the trapping of electrons and holes in the volume of a plane-parallel semiconductor detector\, obtai ned in [2]. However\, this formula was obtained for the case of a homogene ous distribution of X-ray quantum absorption points in the volume of the d etector\, and does not take into account the attenuation of the X-ray quan tum flux as it penetrates into the detector. In [3]\, an attempt was made to take into account the attenuation of the X-ray quantum flux\, but the f ormula published by the authors contains errors.\nIn this paper\, formulae are obtained for the fluctuations of the induced charge on the detector e lectrodes caused by fluctuations in the absorption point of the X-ray quan tum\, taking into account the law of attenuation of the X-ray quantum flux . The obtained formulae demonstrate the role of covariance of induced char ge on the detector electrodes caused by random processes occurring in the detector at the registration of X-rays.\n\n1. A. Owens Compound Semiconduc tor Radiation Detectors\, CRC Press (2012).\n2. J. S. Iwanczyk\, .W. F. Sc hnepple\, M .J. Masterson\, Nucl. Instr. Meth. in Phys. Res. A. 322\, 421 (1992).\n3 A. Ruzin\, Y. Nemirovsky\, J. Appl. Phys. 82\, 2754 (1997).\n\n https://events.sinp.msu.ru/event/8/contributions/350/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/350/ END:VEVENT BEGIN:VEVENT SUMMARY:Limits of nuclear masses and elements DTSTART;VALUE=DATE-TIME:20220711T073000Z DTEND;VALUE=DATE-TIME:20220711T080500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-646@events.sinp.msu.ru DESCRIPTION:Speakers: Yu.Ts. Oganessian ()\nhttps://events.sinp.msu.ru/eve nt/8/contributions/646/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/646/ END:VEVENT BEGIN:VEVENT SUMMARY:NASOLACRIMAL DUCTS PHARMACOSAFETY OF 131-IODINE DTSTART;VALUE=DATE-TIME:20220715T130000Z DTEND;VALUE=DATE-TIME:20220715T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-529@events.sinp.msu.ru DESCRIPTION:Speakers: Alexey Trukhin (Endocrinology Research Centre)\nSeco ndary obliteration of the lacrimal duct obstruction (SALDO) is one of radi oiodine therapy complications in differentiated thyroid cancer observed in 9% of cases [1]. Development of methods for the prevention of SALDO one o f the urgent tasks facing radiology and ophthalmology [2]. We analyzed the frequency of 131-iodine uptake nasolacrimal ducts in 203 patients on 72 h . after 131-iodine administration. Patients were divided in two groups ac cording type of preparation to the radioiodine therapy: 103 used classic l evothyroxine withdrawal for 3 weeks\, 100 used recombinant human thyroid s timulating hormone to increase TSH level. Image segmentation method was de veloped for static 131-iodine scintigraphy of head and neck. Additionally\ , we made an attempt to highlight several groups of risk to develop SALDO in patients undergoing 131-iodine therapy.\n\nhttps://events.sinp.msu.ru/e vent/8/contributions/529/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/529/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of NCQ scaling of elliptic and triangular flow for identifie d hadrons in Au+Au collisions at $\\sqrt{s_{NN}} = 11.5 - 200$ GeV DTSTART;VALUE=DATE-TIME:20220712T080000Z DTEND;VALUE=DATE-TIME:20220712T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-354@events.sinp.msu.ru DESCRIPTION:Speakers: Aleksandr Demanov (NRNU MEPhI)\nA main purpose of Be am Energy Scan experiments is to study the properties of the Quark-Gluon- Matter (QGM) forming in the collisions of two nuclei. Anisotropic flow of produced particles is one of the important observables sensitive to the t ransport properties of the QGM created in relativistic heavy-ion collision s. Anisotropic flow of identified particles measured in Au + Au collision s at top RHIC energy $\\sqrt{s_{NN}} = 200$ GeV exhibits a remarkable NCQ scaling with number of constituent quarks and transverse kinetic energy.\n In this work\, we report on the calculations of elliptic (v2) and triangu lar (v3) flow of identified charged hadrons produced in Au+Au collisions at 11.5 −200 GeV from several state of the art models and provide the direct comparison with published results from RHIC BES experiments.\nFurt her insights about the mechanism of NCQ scaling of anisotropic flow will b e discussed.\n\nhttps://events.sinp.msu.ru/event/8/contributions/354/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/354/ END:VEVENT BEGIN:VEVENT SUMMARY:A LINEAR ELECTRON ACCELERATOR WITH AN ENERGY OF 8-50 MEV WITH INJE CTION FROM AN ELECTRON SOURCE BASED ON CLUSTER PLASMA SYSTEMS DTSTART;VALUE=DATE-TIME:20220713T074000Z DTEND;VALUE=DATE-TIME:20220713T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-352@events.sinp.msu.ru DESCRIPTION:Speakers: Ilia Ashanin (NRNU MEPHI)\nThe problem of increasing of the acceleration rate in linear electron accelerators has been one of the key problems for modern accelerator physics for many years. The physic al limit of the accelerating field strength for normal (50 - 100 MV/m) and superconducting accelerating structures (over 200 MV/m) has been practica lly reached\, and therefore various new acceleration schemes are being con sidered\, primarily plasma acceleration and wakefield acceleration [1].\nI t seems interesting to consider a system in which one can try to bypass th e limitations inherent in photoguns (the dominant effect of the space char ge in the near-cathode region during injection) and acceleration in the la ser-plasma channel (low electron transmission coefficient in the accelerat ion mode\, wide energy spectrum (up to 10%) and low repetition rate pulses \, limited by the capabilities of laser systems) [2]. Many works have appe ared devoted to the preliminary modulation of the beam in the plasma chann el\, which makes it possible to improve the spectrum of accelerated electr ons by a factor of approximately 3–4 [3].\nIt is proposed to consider th e possibility of using a bunch generated in a laser-plasma channel for inj ection into a traditional structure based on RF cavities. It is supposed t o show that a plasma source of electrons based on cluster plasma can produ ce a short (from 0.1 to 1.0 ps) bunch of electrons with an energy of sever al hundred keV [4]\, which makes it possible to consider such a source as an alternative to the photocathode. Next\, the beam must be captured into the acceleration mode in a normally conducting section operating on a stan ding wave and accelerated to an energy of 50 MeV with adjustable energy.\n The features of such a source are considered\, including the possible ener gy spectrum\, and features of an electron bunch capturing with the achieve d parameters in the acceleration mode will discuss in the report. All resu lts of the beam dynamics simulation carried out using the BEAMDULAC packag e developed at the Department of Electrophysical Facilities of NRNU MEPhI [5].\n\n1. Ya. Fineberg\, Atomic Energy 6\, p. 341 (1959)\n2. V. Leurent\, C. Clayton et al.\, Proc. of EPAC’08 (2008)\, pp. 2809–2811.\n3. S. P olozov\, V. Rashchikov\, Cybernetics and Physics\, 7 4 (2018)\, pp. 228– 232.\n4. A. Shkurinov et al.\, Journ. of the Optic. Soc. of America B\, 38 11 paper 3515 (2021)\n5. E. Masunov\, S. Polozov\, Nucl. Instrum. Meth. A 558\, (2006)\n\nhttps://events.sinp.msu.ru/event/8/contributions/352/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/352/ END:VEVENT BEGIN:VEVENT SUMMARY:ELECTRON ACCELERATOR FOR NEUTRON THERAPY AND RADIOISOTOPES PRODUCT ION DTSTART;VALUE=DATE-TIME:20220715T082000Z DTEND;VALUE=DATE-TIME:20220715T084000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-336@events.sinp.msu.ru DESCRIPTION:Speakers: Yu.A. Kurachenko ()\nThe paper vows to the studying the possibility of high‑power electron accelerators for neutron therapy and radioisotopes production. Computations are performed for both applicat ions\, and the results are normalized to the characteristics of the modern -day MEVEX accelerator (average electron current 4 mA at a monoenergetic e lectron beam 35 MeV). \nThe unifying problem for applications is the task of cooling the target: at a beam energy ~ 140 kW\, almost half or more of this energy is released directly into the target. Therefore\, a liquid hea vy metal was chosen as a target to combine high quality thermohydraulics w ith maximum production of both bremsstrahlung radiation and photoneutrons. The target was optimized using precise codes for the tasks of radiation t ransport and thermal hydraulics. Optimization was carried out for the inst allation as a whole: 1) the target configuration\; 2) the composition of t he material and the configuration of the photoneutron removal unit for neu tron capture therapy (NCT) and 2) the scheme of generating bremsstrahlung for radioisotopes production. The photoneutron block provides an acceptabl e beam quality for NCT with a large neutron flux density at the output: ~ 2·1010 cm-2s-1\, which is an order of magnitude higher than the values at the output of existing and projected reactor beams. Such intensity at the beam output will allow to abandon the fractionated irradiation in many ca ses. As for radioisotopes production\, using optimal reaction channel (γ\ , n) 43 radioisotopes in 5 groups were received. For example\, by the 100M o(γ\, n)99Mo reaction the precursor 99Mo of main diagnostic nuclide 99mTc with specific activity ~ 6 Ci/g and total activity of the target 1.8 kCi could be produced after 1 day irradiation exposure. The proposed schemes o f generation and extraction of photoneutrons and bremsstrahlung have a num ber of advantages over traditional methods: a) the use of electron acceler ators for the production of neutrons is much safer and cheaper than the us e of reactor beams\; b) the accelerator with the target and the beam outpu t unit with the necessary equipment and tooling can be easily placed on th e territory of the clinic\; c) the propose liquid gallium target for NCT\, which also serves as a coolant\, is an “environmentally friendly” mat erial: its activation is relatively small and quickly (four days) decrease s to the background level.\n\n1. Yu.A. Kurachenko\, H.A. Onischuk et al. D OI 10.26583/npe.2019.4.12\n2. Yu.A. Kurachenko\, H.A. Onischuk et al. DOI: 10.12737/1024-6177-2019-64-5-48-53\n\nhttps://events.sinp.msu.ru/event/8/ contributions/336/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/336/ END:VEVENT BEGIN:VEVENT SUMMARY:Comparison between elastic scattering of strongly bound α particl es and exotic 6He on a 12C target and the effect of the two-neutron halo o f 6He DTSTART;VALUE=DATE-TIME:20220712T103000Z DTEND;VALUE=DATE-TIME:20220712T105000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-655@events.sinp.msu.ru DESCRIPTION:Speakers: Ahmed Amer ()\nThe experimental angular distribution s for α-particles elastically\n scattered from the 12C nucleus in the ene rgy range of 48.7–386 MeV and\n for the 6He+12C nuclear system in the en ergy range of 5.9–493.8 MeV\n have been reanalyzed. Data analysis is per formed within the framework\n of both the optical model (OM) and the doubl e-folding optical model\n (DFOM). In this model\, the real part of the pot ential is generated\n using the double-folding procedures based on the eff ective M3Y\n interaction between projectile nucleons and target nucleons\, in\n addition to an imaginary part of the Woods-Saxon form. Two criteria\ n are used to observe the nature of 4He and 6He elastically scattered\nfro m 12C and the effect of the two-neutron halo structure of 6He.\nFirstly\, the extracted potential parameters are utilized for\ncalculating the refle xion coefficients ηL\, which are strongly\nrelated to the angular momentu m L. Secondly\, the reduction in reaction\ncross sections with the project ile’s energy.\n\nhttps://events.sinp.msu.ru/event/8/contributions/655/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/655/ END:VEVENT BEGIN:VEVENT SUMMARY:Neutron multiplicity distributions for 250No spontaneous fission f rom ground state or at the decay of the isomeric state DTSTART;VALUE=DATE-TIME:20220712T080000Z DTEND;VALUE=DATE-TIME:20220712T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-647@events.sinp.msu.ru DESCRIPTION:Speakers: Roman Mukhin (Joint Institute for Nuclear Research)\ nThe spontaneous fission is one of the decay channel on a par with α- and β+-decays for heavy and super-heavy isotopes (Z > 100). There are no est ablished models that could describe all details of spontaneous process wel l yet. Therefore\, experimental studies of such processes are high-interes ting and important.\n \nThe combination of relatively high formation cross -section in complete fusion reactions and discovered K-isomer state living longer than its ground state [1] makes 250No isotope attractive to experi mental study. The SHELS separator [2] and SFiNx detection system [3] at FL NR JINR\, Dubna\, Russia allows us carrying out experiments to study promp t neutron yields from 250No spontaneous fission. \n\nThe previous experime nt [4] hinted at possibility of spontaneous fission directly from an isome tric state 250mNo. The difference between average numbers of neutrons per fission with corresponding lifetimes (for ground and isometric states) was quite large but statistically insignificant (≈2σ). Thus\, conclusion a bout spontaneous fission from isomeric state possibility couldn’t be dra wn.\n\nIn the beginning of the 2022 the new experiment was carried out usi ng modern analysis techniques and the detectors array with higher efficien cy than in the previous one [4]. Approximately 1350 spontaneous fissions of 250No were registered (vs ≈700 in [4]). Two activities with different lifetimes associated with 250No and 250mNo were observed. The difference between average numbers of emitted spontaneous fission prompt neutrons for both activities are statistically insignificant (<1σ). Prompt neutrons m ultiplicity emission probability distributions for both activities separat ely and combined were restored using statistical regularization method [5] . \n\nThe prompt neutron multiplicities distributions restoring technique will be discussed in the report. Furthermore\, the structure of such distr ibutions will be shown in conjunction with theoretical interpretation of p rocesses. \n\n1. J. Kallunkathariyil et al.\, Phys. Rev. C 101\, 011301 (2 020)\n2. A.G. Popeko et al.\, NIMB\, 376\, 140-143 (2016)\n3. A.V. Isaev e t al.\, Phys. of Part. and Nucl. Let.\, 19\, 1 (2022)\n4. A.I. Svirikhin e t al. Phys. of Part. and Nucl. Let.\, 14\, 4 (2017)\n5. R.S. Mukhin et al. \, Phys. of Part. and Nucl. Let\, 18\, 4 (2021)\n\nhttps://events.sinp.msu .ru/event/8/contributions/647/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/647/ END:VEVENT BEGIN:VEVENT SUMMARY:SOME REGULARITIES IN THE FORWARD ANGLE YIELDS OF ISOTOPES WITH 4186.\n3) Shape coexistence was found in $^{178}Au$ which have ground and isomeric states with different deformation.\n\n1. B. Marsh et al.\, Nature Physics 14\, 1163 (2018).\n2. T. E. Cocolios et al. \, Phys. Rev. Lett. 106\, 052503 (2011).\n3. A. E. Barzakh\, et al.\, Phys . Rev. C 88\, 024315 (2013).\n4. A. E. Barzakh\, et al.\, Phys. Rev. Lett. 127\, 192501 (2021).\n\nhttps://events.sinp.msu.ru/event/8/contributions/ 269/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/269/ END:VEVENT BEGIN:VEVENT SUMMARY:Searches for Long-Lived Particles in CMS experiment DTSTART;VALUE=DATE-TIME:20220712T124000Z DTEND;VALUE=DATE-TIME:20220712T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-371@events.sinp.msu.ru DESCRIPTION:Speakers: Vladislav Shalaev (JINR\, Dubna State University)\nM any models beyond the standard model predict new particles with long lifet imes\, such that the position of their decay is measurably displaced from their production vertex. We present recent results of searches for long-li ved particles obtained using data recorded by the CMS experiment at the LH C\n\nhttps://events.sinp.msu.ru/event/8/contributions/371/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/371/ END:VEVENT BEGIN:VEVENT SUMMARY:Двухкоординатные газоразрядные дет екторы нейтронов на основе российской ц ифровой придетекторной и регистрирующе й электроники. DTSTART;VALUE=DATE-TIME:20220711T152500Z DTEND;VALUE=DATE-TIME:20220711T153500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-656@events.sinp.msu.ru DESCRIPTION:Speakers: А.В. Пашков (ООО "Детектрон")\nh ttps://events.sinp.msu.ru/event/8/contributions/656/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/656/ END:VEVENT BEGIN:VEVENT SUMMARY:INVESTIGATION OF FISSION MODES OF 248Cf AND 254\,256Fm FORMED IN T HE REACTIONS WITH HEAVY IONS DTSTART;VALUE=DATE-TIME:20220715T122000Z DTEND;VALUE=DATE-TIME:20220715T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-649@events.sinp.msu.ru DESCRIPTION:Speakers: A.A. Ostroukhov (JINR)\nThe role of closed proton an d neutron shells in the fission of 248Cf* and 254\,256Fm* nuclei at excita tion energies from 40 to 56 MeV was studied. Earlier\, multimodal fission of the light 233Pa* [1] as well as the heavy No* [2] actinide nuclei was o bserved. Moreover\, for these nuclei the manifestation of the superasymmet ric fission mode was found. To check the presence of the fission modes in the central region of actinide nuclei the mass-energy distributions of fra gments formed in the 16O+232Th and 16\,18O+238U reactions at energies near the Coulomb barrier have been measured. The experiments were carried out at the U-400 and U-400M accelerators at the Flerov Laboratory of Nuclear R eactions using the double-arm time-of-flight CORSET spectrometer [3]. An i ncrease in the mass yields in the asymmetric region caused by the shell ef fects was observed. To describe the mass and energy distributions of the f ission fragments a multimodal analysis was performed. \n\nReferences:\n[1] A.N. Pan\, E.M. Kozulin\, I.M. Itkis et al.\, Bull. Russ. Acad. Sci. Phys .\, 2018\, vol. 82\, p. 721.\n[2] K.B. Gikal\, E.M. Kozulin\, I.M. Itkis e t al.\, Bull. Russ. Acad. Sci. Phys.\, 2018\, vol. 82\, p. 716. \n[3] E.M. Kozulin\, A.A. Bogachev\, M.G. Itkis et al.\, Instrum. Exp. Tech.\, 2008\ , vol. 51\, p. 44.\n\nThe work was supported by the Program # BR09158499 o f the Ministry of Energy of the Republic of Kazakhstan.\n\nhttps://events. sinp.msu.ru/event/8/contributions/649/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/649/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF REACTIONS WITH THE α-PARTICLE EMISSION AT Emax=20 MeV ON NATURAL ZIRCONIUM TARGETS DTSTART;VALUE=DATE-TIME:20220713T144000Z DTEND;VALUE=DATE-TIME:20220713T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-370@events.sinp.msu.ru DESCRIPTION:Speakers: Pavel Remizov (MSU)\nData of the cross sections and population yields of high-spin isomeric states in reactions with the emiss ion of charged particles makes it possible to obtain various information b oth on the structure of excited levels in the continuous and discrete exci tation regions and on the nuclear reaction mechanisms. Therefore\, the pre sent work aim is to study the 87\,91\,92Sr yields in reactions with bremss trahlung quanta for energies in the region of the giant dipole resonance o n zirconium isotopes.\nThe study of weighted average yields was carried ou t by the activation method by 20 MeV bremsstrahlung gamma quanta on target s of natural metallic zirconium.\nThe spectra of irradiated targets were m easured using Ortec and Canberra gamma spectrometers with a (15-40)% detec tion efficiency compared to a 3'×3'' NaI(Tl) detector. The energy resolut ion of the spectrometers was 1.8–2.0 keV at the 1332 keV 60Co gamma line .\nGamma transitions from the 87mSr and 91\,92Sr decays are reliably ident ified in the studied spectra. The weighted average yields of 87mSr and 92S r occupation in the (γ\, α)-reaction\, as well as 91Sr in the (γ\, αn) reaction\, were studied for the first time on natural zirconium for 20 Me V bremsstrahlung gamma quanta. The following weighted average yields were obtained: for 87mSr (Iπ=1/2–) Y=6.9±0.7 µb\, for 91Sr Y=14±3 µb\, for 92Sr Y=5.5±0.6 µb.\nThe dominance of non-statistical processes is st ated according to the simulation results within the TALYS 1.96 program cod e. The obtained results are discussed.\n\nhttps://events.sinp.msu.ru/event /8/contributions/370/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/370/ END:VEVENT BEGIN:VEVENT SUMMARY:INTERPLAY OF ORDER AND CHAOS IN NUCLEAR STRUCTURE DTSTART;VALUE=DATE-TIME:20220715T143000Z DTEND;VALUE=DATE-TIME:20220715T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-581@events.sinp.msu.ru DESCRIPTION:Speakers: Rashid Nazmitdinov (Bogoliubov Laboratory of Theoret ical Physics\, Joint Institute for Nuclear Research)\nWe demonstrate the u niversality of the Random Matrix approach as a tool to detect the chaos-or der transition in atomic nuclei. In particular\, shell structure phenomeno n in octupole deformed nuclei is discussed as the example of the interplay of regular and chaotic dynamics within the harmonic oscillator model wit h octupole deformations as the effective nuclear structure shell model [1] . It is shown that the chaos-order transition can occur at certain condit ions which give rise to dynamical symmetries in chaotic dynamics of nucleo ns\, and may explain the dominance of prolate nuclear shape in nature.\n Naturally\, one would expect that chaotic component of intrinsic stru cture of a finite many-body quantum system\, exhibited in its spectral pro perties at low excitation energy\, may transform from the secondary consti tuent to the dominant one in basic characteristics of the considered syste m with increase of the excitation energy. This might be primarily true in the description of decay widths of nuclear giant dipole resonances\, highl y excited collective states which centroids are located above the neutron threshold. Indeed\, our analysis of the dipole strength distribution in th e lead region indicates on the onset of statistical properties close to th ose of the Gaussian Orthogonal Ensembles. We show that employment of the r andom distribution for the coupling between microscopic one-phonon states and two-phonon states\, generated by the Gaussian Orthogonal Ensembles dis tribution\, gains a better insight into the description of general proper ties of the spreading widths [2].\n\n\n1. R.G. Nazmitdinov\, Phys.Part.Nuc l.Letts 16\, 159 (2019).\n2. A.P.Severyukhin\, S.Åberg\, N.N.Arsenyev\, R .G. Nazmitdinov\, Phys. Rev.C 104\, 044327 (2021).\n\nhttps://events.sinp. msu.ru/event/8/contributions/581/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/581/ END:VEVENT BEGIN:VEVENT SUMMARY:Доступная для заказов в 2022 году элек троника для научного эксперимента и её р азвитие DTSTART;VALUE=DATE-TIME:20220711T153500Z DTEND;VALUE=DATE-TIME:20220711T154500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-657@events.sinp.msu.ru DESCRIPTION:Speakers: И.С. Бредихин (ООО "Гамматек")\ nhttps://events.sinp.msu.ru/event/8/contributions/657/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/657/ END:VEVENT BEGIN:VEVENT SUMMARY:Determination of neutron detection efficiency of DEMON and PARIS d etectors using a $^{252}$Cf source DTSTART;VALUE=DATE-TIME:20220713T080000Z DTEND;VALUE=DATE-TIME:20220713T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-373@events.sinp.msu.ru DESCRIPTION:Speakers: Olga Saiko (Dubna State University\, Dubna\, Russia) \nThe results of measuring the energy distribution of neutrons emitted fro m the $^{252}$Cf source by the DEMON and PARIS detectors are presented. DE MON (DEtecteur MOdulaire de Neutrons) is scintillator detector widely used for neutron detection [1]. PARIS (Photon Array for the studies with Radio active Ion and Stable beams) is new-built detector consisting of CeBr$_3$ - NaI(Tl) phoswich scintillators [2]. \nThe energies of the neutrons were measured by the Time – Of – Flight (TOF) method where a semiconductor detector was used for fission fragment detection and START-pulse generatio n for the TOF measurements. The STOP pulses for TOF measurements were gene rated by DEMON and PARIS detectors\, respectively.\nThe energy dependence of the neutron efficiency for DEMON and PARIS detectors at the $E_n = 0.7 ÷ 7$ MeV neutron energy range were determined by comparing the measured d ata with standard $^{252}$Cf spectrum [3].\n\n1. I. Tilquin et al.\, Nucl. Instr. Meth. A 365\, 446 (1995).\n2. A. Maj et al.\, Acta Phys. Pol. B 40 \, 565 (2009). \n3. W. Mannhart\, Proc. of IAEA Consulting Meeting\, INDC( NDS)-220\, p. 305 (1989).\n\nhttps://events.sinp.msu.ru/event/8/contributi ons/373/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/373/ END:VEVENT BEGIN:VEVENT SUMMARY:THE APPROBATION OF ION-PLASMA TECHNOLOGY FOR REACTOR GRAPHITE DEAC TIVATION DTSTART;VALUE=DATE-TIME:20220713T074000Z DTEND;VALUE=DATE-TIME:20220713T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-372@events.sinp.msu.ru DESCRIPTION:Speakers: Anna Petrovskaya (Plasma application department\, In noPlasmaTech LLC\, St.Petersburg\, Russia\, Intro-Micro LLC\, St.Peters burg\, Russia)\nAt present time a wide search of effective technology to d eactivate reactor graphite is very acute due to the large volumes of accum ulated irradiated graphite in the world (about 100 thousand tons) and the challenging problem of uranium-graphite reactors decommissioning period. T he ion-plasma technology (IPT) for deactivation of reactor graphite has ad vantage compared with traditional radiochemistry in versatility (IPT works with any kind of radionuclides) and in the absence of the additional seco ndary liquid radioactive wastes (IPT buffer media is inert gas forming no chemical compounds with radionuclides). Our technology provides ion sputt ering of irradiated reactor graphite surface in the “shortened” micro plasma discharge in argon (it is wide known that the dose-forming 14С iso tope is localized mainly inside of near-surface layers of reactor graphite blocks). The microplasma discharge is ignited between the reactor graphit e (cathode) and the tantalum electrode collector (anode) under discharge p arameters: current density (0.001 – 1) A/cm2)\, voltage (300-1000 V)\, a rgon pressure (0.01-1 atm.)\, discharge gap (1-5 mm). During reactor graph ite treatment in the microplasma discharge\, the graphite surface is sputt ered and the sprayed carbon atoms are deposited on the anode surface. The results of SEM analysis of above microplasma exposed collector tantalum e lectrode surface (Fig. 1.) are concept proving and demonstrating workabili ty of our ion-plasma technology.\n\nFig. 1. SEM image and X-ray microanaly sis elemental composition of Ta anode surface.\n\nTechnology is patented i n collaboration of Intro-Micro LLC\, Concern Rosenergoatom JSC and Rosatom [1] and is also suitable for Fukushima NPPs accident dismantling efforts. \n1. A.S.Petrovskaya\, A.B.Tsyganov\, M.R.Stakhiv\, Patent RU №2711292\, patent pending: International patent application PCT/RU2019/000816 (14.1 1.2019)\, entering national phase: US 20210272715\, EP 19888171.6\, CA3105 179A1\, CN112655056A.\n\nhttps://events.sinp.msu.ru/event/8/contributions/ 372/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/372/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of nuclear matter density distribution in light exotic nucle i from proton elastic scattering in inverse kinematics DTSTART;VALUE=DATE-TIME:20220715T145000Z DTEND;VALUE=DATE-TIME:20220715T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-376@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Inglessi (Petersburg Nuclear Physics Insti tute)\nThe proton-nucleus elastic scattering at intermediate energies is a well-established method of investigating the nuclear matter distribution in stable nuclei. When performed in inverse kinematics with radioactive be ams\, it can be applied to the investigation of unstable nuclei as well.\n \nRecently\, differential cross sections for small-angle proton elastic sc attering on the 12\,14Be [1]\, 8B [2] and 14-17C [3] nuclei were measured in inverse kinematics using secondary radioactive beams with energies near 700 MeV per nucleon produced with the fragment separator FRS at GSI\, Da rmstadt. The main part of the experimental setup was the active target IKA R\, which was used for recoil protons detection. Auxiliary detectors for p rojectile tracking and isotope identification completed the setup. The mea sured differential cross sections were analyzed using the Glauber multiple scattering theory. For the evaluation of the data several phenomenologica l nuclear matter density parametrizations were used. The nuclear matter ra dii and radial density distributions were deduced. Extended nuclear matter density distributions were observed in 12\,14Be isotopes and halo structu re of 14Be was confirmed. Proton halo structure was observed for 8B. A pos sible neutron halo structure in 15\,16C and 17C is discussed.\n\n1. S. Ili eva et al.\, Nucl. Phys. A 875 (2012).\n2. G.A. Korolev et al.\, Phys. Le t. B 780 (2018).\n3. A.V. Dobrovolsky et al.\, Nucl. Phys. A 1008 (2021).\ n\nhttps://events.sinp.msu.ru/event/8/contributions/376/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/376/ END:VEVENT BEGIN:VEVENT SUMMARY:Data on the np-scattering length from the nd-breakup reaction at l ow energies DTSTART;VALUE=DATE-TIME:20220715T151000Z DTEND;VALUE=DATE-TIME:20220715T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-374@events.sinp.msu.ru DESCRIPTION:Speakers: Aleksandr Kasparov (INR RAS)\nA kinematically comple te experiment to determine the $np$-scattering length in the $n + d → (n p) + n$ reaction on the neutron beam of the RADEX channel of the INR RAS w as carried out. In the experiment a recoil neutron as well as a neutron fr om the breakup of the $np$ system was registered. The primary neutron ener gy and the proton energy from the breakup of the $np$ system was reconstru cted from the known emission angles and energies of two neutrons and the f act that a breakup proton was detected in an active deuterated target. The experiment was carried out at low neutron energies $8 - 13$ MeV. The valu e of the $np$-scattering length was obtained by a comparison of the experi mental dependence of the $nd$-breakup reaction yield on the relative energ y of the $np$ pair with the simulation results. The obtained value of the $np$-scattering length differs significantly from the value obtained in di rect $np$-scattering and can be associated with a significant influence of $3N$-forces.\n\nhttps://events.sinp.msu.ru/event/8/contributions/374/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/374/ END:VEVENT BEGIN:VEVENT SUMMARY:RADIOACTIVE PARTICLES TRANSPORT AND ABSORBED DOSES DISTRIBUTION IN THE RATS’ GASTROINTESTINAL TRACT DTSTART;VALUE=DATE-TIME:20220712T091000Z DTEND;VALUE=DATE-TIME:20220712T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-375@events.sinp.msu.ru DESCRIPTION:Speakers: Yu.A. Kurachenko ()\nThe radioactive (“hot”) par ticles (HP) production can occur in different nuclear accidents. To date\, a large amount of scientific data on radiation exposure of humans and oth er mammals has been accumulated\, but information on radiative effect on t he gastrointestinal tract (GIT) by HP is not enough.\nThe aim of the study was to simulate the HP transfer in the gastrointestinal tract (GIT) of la boratory rodents (namely\, rats) and estimate doses of internal irradiatio n. It should be noted that monogastric rodents are widespread in nature an d can be used as reference organisms to evaluate the radiative effect on t he environment. Besides\, their GIT is morphologically similar to the huma n one. \nTo study the HP radiative effect on laboratory rodents\, the rats of Wistar breed weighing from 200 to 300 g were used. In the experiments the silicate fused radioactive particles gage 80-160 µm got by “uranium ”\, “three-component” and “rhenium” models were used because the ir radiation characteristics are similar to ones of instantaneous fission products of 10-15 hours age. At the time of the HP intake in animals\, the HP specific activity ranged from 3.7 to 7.4 GBk/g (100-200 MCi/g). Figure 1 shows the experimental data on time-depended radiation for all kinds of HP.\nThe one-compartmental model of HP transfer was applied to estimate t ime-dependent activity in rat’s stomach. Then\, dose rates in stomach an d intestines were evaluated by two calculation techniques:\na) traditional \, using simple semiempirical model\;\nb) more precise one\, based on RADA R rat phantom [1].\nDose rates and accumulated doses were received in 1) s ource localization\, i.e. fundus ventriculi\; 2) small intestine\; 3) thic k intestine. In General\, the best consistency of accurate and semi-empiri cal results is achieved at the source localization point. On the periphery \, as you would expect\, the discrepancy of results is greater. Here doses are many times less.\n\n1. E.N. Denisova\, Yu.A. Kurachenko. Med. Phys.\, No. 2(90)\, 2021. P. 66-72.\n\nhttps://events.sinp.msu.ru/event/8/contrib utions/375/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/375/ END:VEVENT BEGIN:VEVENT SUMMARY:EFFECTIVE INTERACTIONS AND EFFECTIVE OPERATORS FROM THE NO-CORE SH ELL MODEL DTSTART;VALUE=DATE-TIME:20220714T090000Z DTEND;VALUE=DATE-TIME:20220714T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-342@events.sinp.msu.ru DESCRIPTION:Speakers: Nadezda Smirnova (Laboratoire de Physique des Deux I nfinis Bordeaux (LP2IB))\nThe nuclear shell model is one of the oldest mic roscopic approaches to nuclear structure at low energies [1\,2]. The basic idea of the method is to solve the many-body Schrodinger equation by diag onalizing the Hamiltonian\, containing nucleon kinetic energies and intern ucleon interactions\, in the many-body harmonic-oscillator basis. Because of the rapid increase of the model space with the number of nucleons\, onl y for very light nuclei this problem can be solved exactly\, starting from realistic nucleon-nucleon interactions. Such an approach is called the No -Core Shell Model (NCSM) [3]. For heavier nuclei\, truncations have to be made and the eigenproblem is typically solved for valence nucleons moving in a model space comprised of one oscillator shell beyond a closed-shell c ore. Thus\, effective interactions and effective operators must be exploit ed.\nWith well-adjusted phenomenological effective interactions\, the shel l model represents a powerful approach in nuclear structure [4]\, capable of providing very detailed information on nuclear spectra\, static propert ies and transition rates. Derivation of microscopic effective valence-spac e interactions and effective electroweak operators is still a challenge.\n In the present contribution we present new microscopic effective interacti ons for the traditional shell model derived from the NCSM [5\,6]. This is done by application of Okubo-Lee-Suzuki transformation to the NCSM results . We will explain the formalism and demonstrate theoretical spectra for th e sd shell nuclei in comparison with the phenomenological description and with experiment. Finally\, we will present newly constructed electric quad rupole and magnetic dipole operators and show the agreement of valence-spa ce calculations with the NCSM results.\n\n1. M. Göppert-Mayer\, Phys. Rev . 78\, 16 (1950).\n2. O. Haxel\, J.H.D. Jensen\, and H.E. Suess\, Phys. Re v. 75\, 1766 (1949).\n3. B.R. Barrett\, P. Navrátil\, J.P. Vary\, Prog. P art. Nucl. Phys. 69\, 131 (2013).\n4. E. Caurier et al\, Rev. Mod. Phys. 77\, 427 (2005).\n5. E. Dikmen et al\, Phys. Rev. C91\, 064301 (2015).\n6. N.A. Smirnova et al\, Phys. Rev. C100\, 054329 (2019).\n\nhttps://events. sinp.msu.ru/event/8/contributions/342/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/342/ END:VEVENT BEGIN:VEVENT SUMMARY:THE SPECIFIC FEATURES OF PHOTODISINTEGRATION OF 58\,60Ni DTSTART;VALUE=DATE-TIME:20220713T120000Z DTEND;VALUE=DATE-TIME:20220713T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-577@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Varlamov (Lomonosov Moscow Statw University \, Skobeltsyn Institute of Nuclear Physics)\nThe reliability of experiment al cross sections of partial photoneutron reactions (g\,1n) and (g\,2n) fo r 58\,60Ni obtained using both bremsstrahlung [1-4] and quasimonoenergetic annihilation photons [5] were analyzed using the objective physical crite ria. The ratios of partial reaction cross sections to that of neutron yiel d reaction Fi = CS(g\,in)/CS(g\,xn) = CS(g\,in)/[CS(g\,1n) + 2CS(g\,2n)] w ere used. In the cases of (g\,1n) and (g\,2n) reactions reliable data rati os Fiexp must have values not higher than 1.00 and 0.50 [3] and near the v alues Fitheor calculated in the combined photonuclear reaction model (CPNR M) [6]. It was obtained that data under discussion [1-4] do not satisfy th ose criteria. The new reliable cross sections of partial reactions for bot h 58\,60Ni were evaluated using data [5] and experimental-theoretical meth od [7]: CSeval(g\,in) = Fitheor CSexp(g\,xn). It was found that the notice able differences between experimental and evaluated cross sections are bec ause of definite shortcomings of the neutron multiplicity sorting method u sed [5]. The main reason is that generally the CSexp(g\,2n) in reality in a large extent is the CS(g\,1n1p). The point is that in the case of 58Ni t he threshold B1n1p of the (g\,1n1p) reaction is 2.9 MeV smaller in compari son with B2n and the value of CS(g\,1n1p) is ~20 times larger in compariso n with CS(g\,2n). In the case of 60Ni the correspondent deviations are som ewhat less but also very large. The role of (g\,1n1p) reaction in the case s of relatively light nuclei is very specific. The sharing of investigated nucleus excitation energy between neutron and proton in the (g\,1n1p) rea ction is (at least could be) similar to that between two neutrons in the r eaction (g\,2n) and because of that energies of neutrons from both partial reactions could be near. But outgoing neutron from the reaction (g\,1n1p) has multiplicity equal to 1 but both neutrons from the reaction (g\,2n) h ave multiplicity equal to 2. Therefore the reaction (g\,2n) cross sections for both 58\,60Ni were obtained [5] with significant systematic uncertain ties and must not be recommended for using in research and applications.\n \n1. K. Min et al.\, Phys. Rev. Lett. 21\, 1200 (1968).\n2. D. G. Owen et al.\, Nucl. Phys. A 140\, 523 (1970).\n3. B. I. Goryachev et al.\, JETF Le tters 8\, 46 (1968).\n4. B. I. Goryachev et al.\, Sov. J. Nucl. Phys. 11\, 141 (1970).\n5. S. C. Fultz et al.\, Phys. Rev. 10\, 608 (1974).\n6. B. S . Ishkhanov et al.\, Phys. Atom. Nucl. 71\, 493 (2008).\n7. V. V. Varlamov et al.\, Bull. Rus. Acad. Sci. Phys. 74\, 833 (2010).\n\nhttps://events.s inp.msu.ru/event/8/contributions/577/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/577/ END:VEVENT BEGIN:VEVENT SUMMARY:Behavior of moment of inertia in highly deformed 24Mg and 20Ne DTSTART;VALUE=DATE-TIME:20220715T141000Z DTEND;VALUE=DATE-TIME:20220715T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-619@events.sinp.msu.ru DESCRIPTION:Speakers: Mariia Mardyban ()\nWe suggest the self-consistent d escription of the ground-state moment of inertia (MI) in highly prolate li ght nuclei 24Mg and 20Ne (with experimental equilibrium axial quadrupole d eformations b2=0.605 and 0.72\, respectively [1]). These nuclei provide an interesting opportunity to explore dependence of MI on the pairing\, grou nd-state correlations and nuclear shape at extreme deformations. The calc ulations are performed with Skyrme forces SVbas\, SkM*\, and Sly6 for defo rmation range 0.3 < b2 < 0.9. Three approaches are applied [2]: Inglis-Bel yaev (within Hartree-Fock-Bogoliubov method)\, QRPA Thouless-Valatin (with in Quasiparticle Random-Phase Approximation method [3]) and ATDHF (Adiabat ic Time-Dependent Hartree Fock method). For Inglis-Belyaev and ATDHF calcu lations\, the code SKYAX [4] was used. All three approaches show that\, ne ar the equilibrium deformation\, the pairing in 24Mg and 20Ne vanishes and we get the maximum of MI. With further grow of the deformation above the equilibrium values\, we see decrease of MI. Such behavior of MI is explai ned by rearrangement of single-particle levels with deformation. The analy sis reveals main two-quasiparticle contributions responsible for the behav ior of MI in different regimes. \n\n1. Database http://www.nndc.bl.gov\n \n 2. P.Ring and P.Schuck\, TheNuclearMany-BodyProblem (Springer-Verla g\,Berlin\,1980)\n\n 3. A. Repko\, J. Kvasil and V.O. Nesterenko\, Phys. Rev. C 99\, 044307 (2019).\n\n 4. P.-G. Reinhard\, B. Schuetrumpf\, and J . A. Maruhn\, Comput. Phys. Commun. 258\, 107603 (2021).\n\nhttps://events .sinp.msu.ru/event/8/contributions/619/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/619/ END:VEVENT BEGIN:VEVENT SUMMARY:Laboratory Generator for 212Pb Production DTSTART;VALUE=DATE-TIME:20220715T125000Z DTEND;VALUE=DATE-TIME:20220715T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-379@events.sinp.msu.ru DESCRIPTION:Speakers: Konstantin Kokov (NRC Kurchatov Institute)\n²¹²Pb radionuclide generator with ²²⁸Th as a parent radionuclide has been d eveloped. The generator principle is based on diffusion of gaseous ²²⁰ Rn emanating from strong anion exchange resin containing ²²⁸Th into a separate collector where post-decay ²¹²Pb is deposited on the collector walls. After a 48-hour operation cycle of the generator\, sampling of ² ¹²Pb in the form of solution in 0.1 M HCl is executed with approximately 40% yield of ²¹²Pb.\nAnother 212Pb generator design was also realized via ion exchange technique with 224Ra as parent source (T1/2 = 3\,6 d). Ac tual implementation involves an ion exchange separation of 224Ra from 228T h with subsequent absorption of 224Ra in strong cation exchange column. ² ¹²Pb could be then eluted with 1 M HCl.\nThe generators are supposed to be reloaded once in a few years because of long-lived parent 228Th (T1/2 = 1\,9 y). The generators is developed for biological and radiochemical inv estigations in the field of obtaining radiopharmaceuticals for targeted th erapy.\n\nhttps://events.sinp.msu.ru/event/8/contributions/379/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/379/ END:VEVENT BEGIN:VEVENT SUMMARY:6Li(d\,alpha)4He REACTION CROSS SECTION EVALUATION IN 0-20 MeV DEU TERON ENERGY RANGE DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-378@events.sinp.msu.ru DESCRIPTION:Speakers: S. M. Selyankina (Russian Federal Nuclear Center – All-Russian Research Institute of Experimental Physics)\nNew evaluation o f 6Li(d\,alpha)4He reaction integral cross sections (fig.1) was performed at our SaBa library [1]. Our data obtained from measured differential cro ss-sections [2\, 3] at 3.75-8 MeV deuteron energy were used for evaluation . Astrophysical S-factor evaluated value at zero deuteron energy was (2437 0±269) MeV•mb.\n1. A.G.Zvenigorodskij\, V.A.Zherebtsov\, L.M.Lazarev et al.\, The library of evaluated and experimental data on charged particles for fusion application\, IAEA-NDS-191\, 1999.\n2. L.N. Generalov et al.\, Proc. LXIX Int. Conf. on Nucl.Spect. and Nucl.Struct.“Nucleus-2019”. Dubna. 116 (2019).\n3. L.N. Generalov et al.\, Bull.Russ.Acad.Sci.Phys. 84 \, 1511 (2020).\n\nhttps://events.sinp.msu.ru/event/8/contributions/378/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/378/ END:VEVENT BEGIN:VEVENT SUMMARY:Ab initio calculations of branching ratios of alpha particles\, ne utrons and protons in the decay of excited states of beryllium isotopes. DTSTART;VALUE=DATE-TIME:20220715T072000Z DTEND;VALUE=DATE-TIME:20220715T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-380@events.sinp.msu.ru DESCRIPTION:Speakers: Yuri Tchuvil’sky (Skobeltsyn Institute of Nuclear Physics\, Lomonosov Moscow State University)\nThe modern theory of the st ructure of light nuclei is actively developing due to the introduction of ab initio (from first principles) methods of describing nuclear systems. A n essential place among such methods is occupied by various versions of No -Core Shell Model (NCSM) (see\, for example\, [1]) that uses huge multi-nu cleon bases and realistic NN potentials to describe the interaction of nuc leons. Usually\, these potentials are derived from Chiral Effective Field Theory. The discussed approach makes it possible to successfully describe the spectra of nuclei up to masses A ~ 16 in a wide range of energies. \n In the literature\, there are also several successful attempts to describe the total widths of the nucleon and cluster decay of nuclear states [2\,3 ]. In our works (see Ref. [4] and Refs. therein)\, we developed a method t hat makes it possible to solve the problem of multichannel decay of nuclei and calculate the partial widths of decay into a variety of channels. The subsequent publication [5] demonstrates the efficiency of the method for unstable nuclei. \nThe current report presents the results of a study of t he decay properties of highly excited states of beryllium isotopes. Such a detailed calculation of the spectral characteristics of these nuclei – level energies\, total decay widths and branching ratios of decays into ra dically different channels in a wide energy range has been carried out for the first time. A large list of predictions is given. \n\n1. Dytrych T.\, Sviratcheva K. D.\, Bahri C.\, Draayer J. P.\, and Vary J. P.\, Phys. Rev . C 76\, 014315 (2007).\n2. Quaglioni S.\, and Navratil P.\, Phys. Rev. C 79 044606 (2009).\n3. Neff T.\, Phys. Rev. Lett. 106 042502 (2011).\n4. Ro dkin D. M.\, Tchuvil'sky Yu. M.\, Phys. Rev. C 103\, 024304.\n5. Rodkin D. M.\, Tchuvil'sky Yu. M.\, Phys. Rev. C 104\, 044323.\n\nhttps://events.si np.msu.ru/event/8/contributions/380/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/380/ END:VEVENT BEGIN:VEVENT SUMMARY:PARTIAL PHOTONUCLEAR REACTION CROSS SECTIONS OBTAINED USING BREMSS TRAHLUNG DTSTART;VALUE=DATE-TIME:20220713T122000Z DTEND;VALUE=DATE-TIME:20220713T122500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-447@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Varlamov (Lomonosov Moscow State University \, Skobeltsyn Institute of Nuclear Physics)\nCross sections of partial rea ctions\, primarily (g\,1n) and (g\,2n\, are widely used in both scientific researches and applications. There are two main methods for obtaining tho se in various experiments. The majority of CS(g\,1n) and CS(g\,2n) for was obtained using quasimonoenergetic annihilation photons [1\,2] in Livermor e (USA) and Saclay (France). The method of photoneutron multiplicity sorti ng using measured neutron energy was used for direct measurement the cross sections CS(g\,1n) and CS(g\,2n). For 19 nuclei from 51V to 209Bi investi gated in both laboratories significant systematic disagreements were found [3\,4]. Using the objective physical criteria of data reliability it was shown that in general partial reaction cross sections obtained using the m ethod of neutron multiplicity sorting are not reliable because the presenc e of significant systematic uncertainties from the unreliable (erroneous) identification of multiplicity of detected neutron [5]. The most important criteria are that positive ratios Fiexp = CS(g\,in)/CS(g\,xn) = CS(g\,in) /[CS(g\,1n)+2CS(g\,2n)] for reliable data in the cases of (g\,1n) and (g\, 2n) reactions must have values not higher than 1.00 and 0.50 and near the values Fitheor calculated in the combined photonuclear reaction model (CPN RM). Data on partial reaction cross sections were obtained also using brem sstrahlung. The neutron yield cross sections CS(g\,xn) = CS(g\,1n)+2CS(g\, 2n) were measured directly and used for determination of CS(g\,2n) using t he corrections based on the nuclear reaction statistical theory. After tha t CS(g\,1n) was obtained using the correspondent subtraction procedure CS( g\,1n) = CS(g\,xn)-2CS(g\,2n). The reliability of partial reaction cross s ections CS(g\,1n) and CS(g\,2n) for nuclei 59Co\, 58\,60Ni\, 90Zr\, 112\,1 14\,119Sn\, 127I\, 165Ho\, 166Er\, 181Ta was investigated using the criter ia mentioned above. It was found that generally those cross sections are n ot reliable because of many physically forbidden negative values or values for which F2exp > 0.50. This is the results of some shortcomings in GDR s tatistical theory description of competition between particle reactions.\n \n1. S. S. Dietrich et al.\, At. Data Nucl. Data Tables 38\, 199 (1988).\n 2. IAEA Nuclear Data Section database\, Experimental Nuclear Reaction Data (EXFOR)”\, http://www-nds.iaea.org/exfor\;\nUSA National Nuclear Data C enter database\, CSISRS and EXFOR Nuclear reaction experimental data”\, http://www.nndc.bnl.gov/exfor/exfor00.htm.\nCDFE Nuclear Reaction Database (EXFOR)”\, http://cdfe.sinp.msu.ru/exfor/index.php.\n3. E. Wolynec et a l.\, Phys.Rev. C 29\, 1137 (1984).\n4. V. V. Varlamov et al.\, Internation al Nuclear Data Committee\, INDC(CCP)-440\, IAEA NDS\, Vienna\, Austria\, 2004\, p. 37.\n5. V. V. Varlamov et al.\, Phys. Atom. Nucl.\, 80\, 957 (20 17).\n\nhttps://events.sinp.msu.ru/event/8/contributions/447/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/447/ END:VEVENT BEGIN:VEVENT SUMMARY:OCTUPOLE EXCITATIONS IN 238U DTSTART;VALUE=DATE-TIME:20220712T151000Z DTEND;VALUE=DATE-TIME:20220712T152000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-658@events.sinp.msu.ru DESCRIPTION:Speakers: Pazlitdin Usmanov (Namangan Institute of Engineering and Technology)\nCurrently\, one of the topical research areas in the fie ld of the nuclear structure experimental and theoretical studies is the ex perimental and theoretical study of the negative parity states in the acti nide nuclei [1]. In the 238U nucleus\, rotational bands based on the groun d and octupole vibrational states are known. Most of the experimental data were obtained using Coulomb excitation [2] and in reactions with heavy io ns [3\,4]. In the gamma transition probabilities from the octupole bands t o the levels of the ground state band\, noticeable deviations from the Ala ga rules which are valid in the adiabatic approximation reveal.\nThe exper imental data were analyzed within the framework of microscopic and phenome nological models [5\,6]. Results of the microscopic model [5] disagree wit h the experiment. In [6]\, within the framework of the cluster model\, a n umber of levels with odd spins belonging to the band were predicted\, whi ch was confirmed by experiment [1]. \nIn this work\, within the framework of the phenomenological model [7] considering the Coriolis mixing of octup ole bands with \, and the energies\, state structures\, and reduced E1 t ransition probabilities from negative parity states to the ground state ba nd and to the states of β- and γ- bands with and are calculated. The t heoretical results agree satisfactorily with the experimental data. \n\n1. E. Browne\, J. Tuli\, Nucl. Data Sheets. 127\, 191 (2015).\n2. D. Ward\, et al.\, Nucl. Phys. A 600\, 88 (1996).\n3. K. Abu Saleem\, et al.\, Phys. Rev. C 70\, 024310 (2004).\n4. S. Zhu\, et al.\, Phys. Lett. B 618\, 51 ( 2005).\n5. M. Bender\, P.H. Heenen and P. Bonche\, Phys. Rev. C 70\, 05430 4 (2004).\n6. B. Buck\, et al.\, J. Phys. G: Nucl. Part. Phys. 34\, 1985 ( 2007).\n7. P. N. Usmanov\, A. A. Solnyshkin\, A. I. Vdovin\, U. S. Salikhb aev\, Phys. At. Nucl. 77\, 1343 (2014).\n\nhttps://events.sinp.msu.ru/even t/8/contributions/658/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/658/ END:VEVENT BEGIN:VEVENT SUMMARY:ESTIMATİON OF THE REACTION CROSS SECTION Li(n\,α)T DTSTART;VALUE=DATE-TIME:20220712T143000Z DTEND;VALUE=DATE-TIME:20220712T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-383@events.sinp.msu.ru DESCRIPTION:Speakers: Bakhtiyar Najafov (Institute of Radiation Problems o f Azerbaijan National Academy of Sciences )\nThe presented work is carried out analyzes and evaluation of available experimental data on the Li(n\, α)T reaction cross section in order to obtain the recommended data. The r eaction cross section Li(n\,α)T--σnα (En) in neutron physics is often u sed as a reference quantity. In the neutron energy range En from 0.025 eV to 100 keV\, the cross section is known with an accuracy of 1÷3%. In the energy range 500 KeV\n\nhttps://events.sinp.msu.ru/event/8/contributions/3 83/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/383/ END:VEVENT BEGIN:VEVENT SUMMARY:Microscopic description of isoscalar giant monopole resonance: the case of 48Ca DTSTART;VALUE=DATE-TIME:20220714T122000Z DTEND;VALUE=DATE-TIME:20220714T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-472@events.sinp.msu.ru DESCRIPTION:Speakers: Nikolay Arsenyev (Bogoliubov Laboratory of Theoretic al Physics\, Joint Institute for Nuclear Research)\nA comprehensive analys is of the isoscalar giant monopole resonance (ISGMR) has long been a subje ct of extensive theoretical and experimental research [1\,2]. The ISGMR pr operties are presently an important problem not only from the nuclear stru cture point of view [2\,3] but also because of the special role they play in many astrophysical processes such as prompt supernova explosions [4] an d the interiors of neutron stars [5].\nOne of the successful tools for des cribing the ISGMR is the quasiparticle random phase approximation (QRPA) w ith the self-consistent mean-field derived from Skyrme energy density func tionals (EDF) [2\,3]. The study of the monopole strength distribution in t he region of giant resonance involves taking into account a coupling betwe en the simple particle-hole excitations and more complicated (two- and thr ee-phonons) configurations [3\,6]. The main difficulty is that the complex ity of calculations beyond standard QRPA increases rapidly with the size o f the configuration space\, and one has to work within limited spaces. Usi ng a finite rank separable approximation for the residual particle-hole in teraction derived from the Skyrme EDF one can overcome this numerical prob lem [7\,8]. \nIn the present report\, we study the effects of the coupling between one-\, two- and three-phonon terms in the wave functions on the m onopole strength distribution in the double magic nucleus 48Ca. Using the same set of parameters\, we describe available experimental data [9\,10]. The effects of the phonon-phonon coupling leads to a redistribution of the main monopole strength to lower energy states and also to higher energy t ail [11].\nThis work was supported by the Russian Science Foundation (Gran t No. RSF-21-12-00061).\n\n1. J.P. Blaizot\, Phys. Rev. 64\, 171 (1980).\n 2. U. Garg\, and G. Colò\, Prog. Part. Nucl. Phys. 101\, 55 (2018).\n3. N .N. Arsenyev\, and A.P. Severyukhin\, Universe. 7\, 145 (2021).\n4. H.A. B ethe\, Rev. Mod. Phys. 62\, 801 (1990).\n5. N.K. Glendenning\, Phys. Rev. Lett. 57\, 1120 (1986).\n6. V.G. Soloviev\, Theory of Atomic Nuclei: Quasi particles and Phonons. 1992. Bris-tol/Philadelphia.\n7. N.V. Giai\, Ch. St oyanov\, and V.V. Voronov\, Phys. Rev. C. 57\, 1204 (1998).\n8. A.P. Sever yukhin\, V.V. Voronov\, and N.V. Giai\, Eur. Phys. Jour. A. 22\, 397 (2004 ).\n9. K. Howard et al.\, Phys. Lett. B. 801\, 135185 (2020).\n10. S.D. Ol orunfunmi et al.\, arXiv:2202.00722v1 [nucl-ex] 1 Feb 2022.\n11. N.N. Arse nyev\, and A.P. Severyukhin\, in preparation.\n\nhttps://events.sinp.msu.r u/event/8/contributions/472/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/472/ END:VEVENT BEGIN:VEVENT SUMMARY:ACTUAL NUCLEAR MEDICINE PROBLEMS IN PEDIATRICS DTSTART;VALUE=DATE-TIME:20220712T072000Z DTEND;VALUE=DATE-TIME:20220712T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-382@events.sinp.msu.ru DESCRIPTION:Speakers: B.Ya. Narkevich ()\nThe current state and prospects for the development of nuclear medicine in pediatrics was analyzed on the basis of literature data and own experience. The main directions of radion uclide diagnostics and radionuclide therapy in children were considered br iefly. There is a quantitative predominance of radionuclide diagnostic stu dies in pediatric urology compared to studies in oncology. Radionuclide th erapy in children are used much less often and mostly for the hyperthyroid ism\, differentiated thyroid cancer and neuroendocrine tumors.\nCurrently the most important problem is the exact determination of the individual op timal activity of the radiopharmaceutical administered to a child. The tec hnology is based on body weight and the protocol on a specific device. In the first approximation\, this problem is solved by the reference diagnost ic levels of activity. At the same time\, the impossibility of obtaining a n exhaustive solution to the problem of individualization on the basis of the current domestic regulatory documentation was stated\, although method s for the refined calculation of the specified activity for the most commo nly used diagnostic radiopharmaceuticals in pediatrics have already been p roposed and validated by international specialized organizations. In radio nuclide therapy for children\, optimal activity is determined by the thera nostics principles and technologies.\nThe widespread introduction into cli nical practice of hybrid devices for radionuclide research leads to radiat ion exposure increase to pediatric patients\, when internal radiopharmaceu tical dose is supplemented by a higher dose of external radiation from X-r ay CT. Methods for determining organ and effective doses of diagnostic exp osure of children are analyzed. It is noted that the errors in the indicat ed radiation doses determining on the basis of domestic regulatory documen tation and international recommendations reach several tens of percent\, w hat is significantly worse than the other radiation therapy methods accura cy.\nWhen compiling the list of clinical indications for nuclear medical p rocedures in children\, there is the need of taking into account the risk of radiation-induced carcinogenesis. In the case of radionuclide therapy i ts probability in children is significantly higher. The possibility and ex pediency of risk assessment based on the concept of effective radiation ri sk instead of the concept of effective dose is discussed. It also requires the development of appropriate methodological recommendations\, including the international level.\nThe technological and psychological features of nuclear medical procedures in children are discussed together with a high er complexity of their implementation. Practical recommendations for such cases are presented.\n\nhttps://events.sinp.msu.ru/event/8/contributions/3 82/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/382/ END:VEVENT BEGIN:VEVENT SUMMARY:Online data processing and monitoring of the BM@N experiment DTSTART;VALUE=DATE-TIME:20220715T132000Z DTEND;VALUE=DATE-TIME:20220715T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-385@events.sinp.msu.ru DESCRIPTION:Speakers: Ilnur Gabdrakhmanov (JINR VBLHEP)\nThe BM@N (Baryoni c Matter at Nuclotron) experiment is the fixed target experiment and the f irst stage of the NICA (Nuclotron-based Ion Collider fAсility) accelerato r complex located in the Joint Institute for Nuclear Research in Dubna. Th e experimental facility is designed to explore properties of dense strongl y interacting matter in heavy ion collisions.\nThe data decoding and event reconstruction algorithms are being developed as part of the BmnRoot on t op of the FairRoot framework – a ROOT program package developed primaril y for the FAIR experiment. The monitoring system’s frontend is based on the CERN jsROOT library. The online data processing pipeline is organized as several processes exchanging data via the ZeroMQ sockets. This approach makes the system flexible and easier to add new elements to the system as well as distribute calculation on several nodes. Also it is more conveni ent to monitor experiment by a distributed team. The QA system allows user s to select reference run from past runs and impose it on the current run in order to detect possible deviations in the histograms.\nOne of the cruc ial parts of data processing is the signal filtering in the strip detector subsystems such as Gas Electron Multipliers (GEM)\, silicon strip detecto rs and Cathode Strip Chambers (CSC). They constitute inner tracker – th e key part for track reconstruction. The decoding workflow includes iterat ive filtration\, executing noise reduction.\n\nhttps://events.sinp.msu.ru/ event/8/contributions/385/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/385/ END:VEVENT BEGIN:VEVENT SUMMARY:RADIATION SOURCE CHARACTERISTICS ANALYSIS DURING BRACHYTHERAPY WIT H THE RING APPLICATOR FOR DIFFERENT IRRADIATION PLANS DTSTART;VALUE=DATE-TIME:20220715T132000Z DTEND;VALUE=DATE-TIME:20220715T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-400@events.sinp.msu.ru DESCRIPTION:Speakers: D.I. Kozlovsky ()\nInaccuracies in brachytherapy tre atment occur due to two reasons mainly: anatomical misalignment or as a re sult of errors that are usually associated with incorrect positioning of t he applicator or radiation source during treatment. The purpose of this wo rk is to test the degree of inconsistency in the positioning of the radiat ion source at the most distant position of the ring applicator when differ ent dosimetric exposure plans are used. An IBU-Digital X-ray machine was u sed to check the quality of the source positioning. The ring applicator wa s secured with an applicator clamp with a base plate and placed on the pat ient table perpendicular to the direction of the x-ray beam. Dosimetric ex posure plans were created on the planning system Oncentra Brachy v4.5.2 fo r microSelectron HDR v3 Digital\, Elekta\, Sweden. The plans included one distal active position as well as several active positions in the annular part of the applicator. After the source moved to the distal position\, pl anar X-ray images of the applicator with the source were obtained\, as wel l as lateral images at an angle of 90 degrees for reconstruction. The coor dinates of the points of the center of the radiation source capsule for th e respective treatment plan were used to measure the distance between the distal position of the source on the reference plan (plan with one distal active position) and the distal position on the remaining plans. The maxim um deviation of the source location in the distal position was observed du ring the implementation of the dosimetric plan\, in which the last 2 posit ions were deactivated and amounted to 1.7 mm. The number of inactive posit ions in front of the outermost active position in the ring applicator did not affect the positioning accuracy of the source. The observed difference s in the accuracy of positioning the source in the distal position when im plementing different irradiation plans lead to uncertainty in dose deliver y on brachytherapy devices. The results obtained indicate the need for qua lity control procedures when putting applicators into clinical operation\, as well as the need to develop an additional device for dose delivery qua lity checking for various applicators in brachytherapy.\n\nhttps://events. sinp.msu.ru/event/8/contributions/400/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/400/ END:VEVENT BEGIN:VEVENT SUMMARY:K-FORBIDDEN M1-TRANSITIONS IN 156Gd DTSTART;VALUE=DATE-TIME:20220712T152000Z DTEND;VALUE=DATE-TIME:20220712T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-659@events.sinp.msu.ru DESCRIPTION:Speakers: Pazlitdin Usmanov (Namangan Institute of Engineering and Technology)\nAnalysis of the available experimental data obtained for the reactions \, and at the nucleus\, shows that almost all excited en ergy levels up to 2.0 MeV may be assumed to be uncovered [1]. The experime ntal data indicate the presence of a deviation from the Alaga rule. In par ticular\, forbidden transitions from states of the band are observed.\nIn [2\, 3]\, within the framework of the phenomenological model [4]\, which takes into account the Coriolis mixing of the states of the rotational ban ds\, the low-lying states of the nucleus were studied. The energies\, wav e functions\, and electrical characteristics of the states of the rotation al bands were calculated. The reasons leading to the non-adiabatic effects \, which manifest themselves in energies\, wave functions of states\, and ratios of transitions from vibrational states\, are shown.\nIn the present paper we continue the study of the properties of the rotational states of the nucleus . We have calculated the reduced probabilities of transitions \, using the wave functions obtained in [2]. The effect of rotation on the magnetic characteristics of excited states is studied. The calculated val ues of the probabilities of transitions from the states of the and band s are listed in the table and compared with the available experimental dat a.\n\n1. C. W. Reich\, Nucl. Data Sheets. 113\, 2537 (2012).\n2. P. N. Usm anov\, E. K. Yusupov\, IIUM Eng. J. 22\, 167 (2021).\n3. P. N. Usmanov\, A . I. Vdovin\, E. K. Yusupov\, Bull. Russ. Acad. Sci.: Phys. 85\, 1102 (202 1).\n4. P. N. Usmanov\, I. N. Mikhailov\, Phys. Part. Nucl. 28\, 348 (1997 ).\n\nhttps://events.sinp.msu.ru/event/8/contributions/659/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/659/ END:VEVENT BEGIN:VEVENT SUMMARY:Isotopic dependence of charge and matter radii. DTSTART;VALUE=DATE-TIME:20220714T090000Z DTEND;VALUE=DATE-TIME:20220714T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-608@events.sinp.msu.ru DESCRIPTION:Speakers: Ivan Borzov (NIC Kurchatov Institute)\nIsotopic depe ndence of charge and matter radii.\n I.N. Borzov 1\,2\, S.V. To lokonnikov1\,3\n1 National Research Centre “Kurchatov Institute”\, Mos cow\, Russia\n2Bogolubov Laboratory of Theoretical Physics\, Joint Institu te of Nuclear Research\, Dubna\, Russia\n3 Moscow Institute of Physics and Technology (National Research University)\, Dolgoprudny\, Russia\n†E-ma il: Borzov_IN@nrcki.ru\, cc: ibor48@mail.ru\n\n Fully self-consistent st udy of the charge and matter radii in the chains of the Ar - Ti\, Ni\, Cu isotopes is presented. The nuclei with pairing in both neutron and proton sectors are treated within the Energy Density Functional (EDF) approach wi th the Fayans functional DF3-a [1]. Recently the new option of this functi onal named Fy(∆r\,HFB) has become popular [2]. We compare their performa nce in describing both isotopic trend of the radii and odd-even staggering (OES) found in the CERN-ISOLDE experiments for 36-52Ca [2] and 36-52K [3] isotopes (Figs.1\,2). For K\, Ca\, Sc isotopes\, the calculated different ial charge radii δ relative to N = 28 show universal increase independent on the mass number A in agreement with the data [2-3]. Strong increase of the radii at N>28 in K\, Ca\, Sc isotopes (Fig.1b) is explained by A-depe ndent contribution of the quasiparticle-phonon coupling [4\,5]. The corres ponding 3-point filters Δ(3) for the binding energies and radii are consi stent with magicity of the N=20\, 28\, 32 shells in K isotopes [5] (Fig.2) . Supported by the grant of Russian Scientific Foundation (RSF 21-12-00061 ). \n \nFig. 1. a) The differential charge radii of K\, Ca\, Sc isotopes calculated within the DF3-а functional compared to the data [2\,3]. b) A n impact of the quasiparticle-phonon coupling on the differential charge radii of Ca\, isotopes[4]. \nFig. 2. The 3-point filters Δ(3) for binding energies and charge radii of K isotopes calculated from the DF3-a functio nal with (red) and without (blue) gradient paring vs the data [3].\n\n1. S .V. Tolokonnikov\, E.E. Saperstein\, Phys. At. Nucl. 74\, 1277 (2011).\n2. A.J. Miller et.al. Nature Physics\, 15\, 432 (2019).\n3. A.Koszorus et.al . Nature Physics\, https://doi.org/10.1038/s41567-020-01136-5 (2020).\n4. E.E. Saperstein\, I.N. Borzov\, S.V. Tolokonnikov\, JETP Letters\, 104\,41 7 (2016).\n5. I.N. Borzov\, S.V. Tolokonnikov\, Phys.At.Nucl. 85(3) (2022) .\n\nhttps://events.sinp.msu.ru/event/8/contributions/608/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/608/ END:VEVENT BEGIN:VEVENT SUMMARY:MODELLING OF THE CLUSTER FORMATION IN HEAVY NUCLEI FISSION DTSTART;VALUE=DATE-TIME:20220712T082000Z DTEND;VALUE=DATE-TIME:20220712T084000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-387@events.sinp.msu.ru DESCRIPTION:Speakers: Anna Unzhakova (Saint Petersburg State University)\n This paper presents a study on the microscopical modelling of the cluster formation in the cold fission of actinides. \n In the last three decades \, the situation in experimental and theoretical investigation of clusteri ng effects in multimodal fission has changed dramatically [1\,2\,3].\n Bas ed on our cold fission multi-valley calculations in the framework of Strut insky shell correction method\, a theoretical study of various cluster str uctures emerging in the process of fission has been carried out. Results have demonstrated the effect of the arrangement and rearrangement of magic clusters in the fission process [4\,5].\nThis type of the cluster formati on modelling has been successfully implemented for the flow turbulence con trol using air pressure sensors and aircraft wing surface modifying actuat ors [6]. For the first time a new approach to the emergent cluster aggrega tion by the local rules of interaction has been proposed in highly-cited w ork of Vicsek et al. [7].\n Our computable microscopical modelling of t he clustering can contribute to understanding of the fission process dyna mical features such as a time scale\, an interplay between collective and single-particle degrees of freedom and a degree of equilibration on the fi ssion path.\n\n1. Y. Pyatkov and D. Kamanin\, J. Phys.: Conf. Ser. 1390 01 2011 (2019).\n2. W. Oertzen and A. Nasirov\, The European Physical Journal A. 56 (2020).\n3. D. Rodkin\, Yu.Tchuvil'sky\, JETP Letters\, 109:7\, 425 –431 (2019).\n4. A. Unzhakova and O. Granichin\, Exotic Nuclei: Proceedi ngs\, 351-354 (2020).\n5. A. Unzhakova\, T. Khantuleva\, and O. Granichin \, Fission and Properties of Neutron-Rich Nuclei: Proceedings\, 582-589 (2 018).\n6. O. Granichin\, T. Khantuleva\, and N. Amelina\, Proceedings I FAC\, 1940 (2017).\n7. T. Vicsek\, A. Czirók\, E. Ben-Jacob\, I. Cohen\, and O. Shochet\, Phys. Rev. Lett. 75\, 1226 (1995).\n\nhttps://events.sinp .msu.ru/event/8/contributions/387/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/387/ END:VEVENT BEGIN:VEVENT SUMMARY:MEASUREMENT OF THE NEUTRON YIELD FROM 13C(α\,n0)16O REACTION DTSTART;VALUE=DATE-TIME:20220714T152900Z DTEND;VALUE=DATE-TIME:20220714T154900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-389@events.sinp.msu.ru DESCRIPTION:Speakers: Pavel Prusachenko (Institute for Physics and Power E ngineering\, Obninsk\, Russia)\nThe 13C(α\,n)16O reaction is important fo r some application including neutrino measurements\, nuclear astrophysics and nuclear power industry. The measurement of the total neutron yields (T NY) from this reaction has a high priority [1] because this data are used for normalization and testing the experimental data and the cross-section evaluations. The existing sets of experimental data on TNY were measured w ith uncertainty >10% due to the uncertainty of the 13C content in natural graphite. \n The goal of the work is the independent check and normalizati on of the 13C(α\,n0)16O reaction cross-section data measured in 2021 [2]. The differential spectra of neutrons and the total neutron yields from th e 13C(α\,n0)16O reaction were measured in the energy range 3-6.5 MeV usin g the thick carbon target enriched in 13C. The time-of-flight method was u sed to determine the neutron energy and to separate the neutrons correspon ding to ground state of the residual nucleus. The 13C enrichment and the e lemental composition of the target were determined using the ion beam anal ysis methods. The obtained TNY values were compared with ones calculated b ased on the ENDF/B-VIII.0 evaluation. \n\n1. S. S. Westerdale\, A. Jung hans\, R. J. deBoer\, M. Pigni\, P. Dimitrou\, Summary Report of the Virtu al Technical Meeting on (alpha\,n) Nuclear Data Evaluation and Data Needs\ , 8-12 November 2021 (INDC(NDS)-0836)\, printed by the IAEA in Austria\, M arch 2022.\n2. P. S. Prusachenko\, T. L. Bobrovsky\, I. P. Bondarenko\, M. V. Bokhovko\, A. F. Gurbich and V. V. Ketlerov\, Physical Review C\, 105 (2022) 024612.\n\nhttps://events.sinp.msu.ru/event/8/contributions/389/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/389/ END:VEVENT BEGIN:VEVENT SUMMARY:NUCLEON TRANSFER PROCESSES IN LOW-ENERGY REACTIONS WITH HELIUM ISO TOPES DTSTART;VALUE=DATE-TIME:20220714T093000Z DTEND;VALUE=DATE-TIME:20220714T100000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-607@events.sinp.msu.ru DESCRIPTION:Speakers: Mikhail Naumenko ()\nExperimental cross sections for formation of isotopes ${}^{44\,46}$Sc and ${}^{45}$Ti in reactions ${}^{3 \,4\,6}$He + ${}^{45}$Sc\, ${}^{196\,198}$Au in reactions ${}^{3\,4\,6\,8} $He + ${}^{197}$Au\, and ${}^{194}$Au in reaction ${}^{3}$He + ${}^{194}$P t have been analyzed. To calculate nucleon transfer probabilities and cros s sections\, the time-dependent Schrödinger equation for nucleons of ${}^ {3\,4\,6}$He\, ${}^{45}$Sc\, ${}^{197}$Au\, and ${}^{194}$Pt has been solv ed numerically with a special choice of the shell model mean field for ${} ^{3\,4\,6\,8}$He nuclei [1] (Fig. 1). Fusion-evaporation channels were tak en into account using the code of the NRV web knowledge base [2]. It was s hown that the contribution of fusion-evaporation to the experimental data is significant for reactions ${}^{3\,4\,6}$He + ${}^{45}$Sc\, whereas in t he case of reactions ${}^{3\,4\,6\,8}$He + ${}^{197}$Au and ${}^{3}$He + $ {}^{194}$Pt\, it is negligible. The results of calculation (Fig. 2) are in good agreement with experimental data [3\, 4].\n\nFig. 1. Examples of tim e evolution of the probability density for the neutron of ${}^{3}$He in th e collision ${}^{3}$He + ${}^{197}$Au at ${E_{{\\rm{c}}{\\rm{.m}}{\\rm{.}} }}$ = 20 MeV and impact parameter *b* = 1 fm. The course of time correspon ds to panel locations (a)\, (b)\, (c)\, (d).\n\nFig. 2. Cross sections for formation of the isotope ${}^{198}$Au in the reaction ${}^{3}$He + ${}^{1 97}$Au: experimental data [2] (filled squares) and [3] (empty squares) alo ng with the results of calculations. The arrow indicates the position of t he Coulomb barrier.\n\n1. M.A. Naumenko\, V.V. Samarin\, Yu.E. Penionzhkev ich\, and N.K. Skobelev\, Bull. Russ. Acad. Sci.: Phys. 81\, 710 (2017).\n 2. NRV web knowledge base on low-energy nuclear physics\, http://nrv.jinr. ru/nrv/.\n3. N.K. Skobelev\, Yu.E. Penionzhkevich\, E.I. Voskoboinik et al .\, Phys. Part. Nucl. Lett. 11\, 114 (2014).\n4. Y. Nagame\, K. Sueki\, S. Baba\, and H. Nakahara\, Phys. Rev. C 41\, 889 (1990).\n\nhttps://events. sinp.msu.ru/event/8/contributions/607/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/607/ END:VEVENT BEGIN:VEVENT SUMMARY:PROTON INDUCES PROCESSES ON STRONTIUM ISOTOPES DTSTART;VALUE=DATE-TIME:20220712T145000Z DTEND;VALUE=DATE-TIME:20220712T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-388@events.sinp.msu.ru DESCRIPTION:Speakers: Cristiana Oprea (Frank Laboratory of Neutron Physics \, Joint Institute for Nuclear Research\, Dubna\, MO\, Russian Federation) \nIn this study\, proton capture and (p\,xn) nuclear reactions on natural isotopes of Sr were investigated at incident protons up to 30-35 MeV. Taki ng into account all nuclear reaction mechanisms\, cross sections\, angular distributions\, and isotope productions have been analyzed. A Hauser-Fesh bach formalism was employed to describe compound processes\, an approximat ion of Distorted Wave Born Approximation for direct mechanisms\, and an ex citon model to explain pre-equilibrium processes [1-3]. In this study\, th e contribution of the nuclear reactions mechanisms to the cross sections a nd angular distributions is discussed. These theoretical evaluations were compared with experimental data from literature and with those obtained fr om FLNP JINR Dubna facilities. Experimental data of fast proton-induced re actions are consistent with theoretical results. Based on the good agreeme nt between theoretical and experimental results\, it was possible to deriv e the dependence of the isomer ratios on the protons' energy. Several calc ulations use isotope ratios to evaluate spin distributions of reaction pro ducts\, densities of nuclear states\, and nuclear deformation in final sta tes. Computer simulations were conducted to evaluate the production of Ytt rium\, Rubidium\, and other isotopes using angular distributions of incide nt protons for different targets and intensities of incident protons. Calc ulations for isotopes and isomer production were compared with experimenta l data gathered from the literature.\nFor future experiments at JINR's Dub na facilities involving fast neutron induced reactions\, the present data will be used.\n\n1. W. Hauser\, H. Feshbach\, Phys. Rev\, 87\, 366 (1952). \n2. N. Austern\, Direct Nuclear Reaction Theories\, New-York\, Willey-Int erscience (1970).\n3. A.J. Koning\, J.M. Akermans\, Phys. Lett. B\, 234\, 417 (1990).\n\nhttps://events.sinp.msu.ru/event/8/contributions/388/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/388/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of the reactions with light nuclei by AMBER experiment at CERN DTSTART;VALUE=DATE-TIME:20220715T074000Z DTEND;VALUE=DATE-TIME:20220715T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-412@events.sinp.msu.ru DESCRIPTION:Speakers: Alexey Dzyuba (NRC Kurchatov Institute PNPI (RU))\nT he recently approved NA66/AMBER experiment (Apparatus for Meson and Baryon Experimental Research) at the CERN Super Proton Synchrotron pursues a bro ad research program. An essential part of the program is a measurement of the antiproton production cross section in proton-helium collisions\, whic h will provide much needed input for the searches of Dark Matter. This\, a s well as other proposed experimental studies to address the various aspec ts of the so-called Emergence of Hadron Mass mechanism: the proton and mes ons charge radii\, the mesonic parton momentum distributions\, will be dis cussed.\n\nhttps://events.sinp.msu.ru/event/8/contributions/412/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/412/ END:VEVENT BEGIN:VEVENT SUMMARY:MODELLING OF ION TRANSFER PROCESSES IN A MAGNETO-OPTICAL SYSTEM OF SOLENOIDS AND MAGNETIC QUADRUPOLE LENSES WITH DISCRETE FLOW COMPACTION DTSTART;VALUE=DATE-TIME:20220715T145000Z DTEND;VALUE=DATE-TIME:20220715T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-390@events.sinp.msu.ru DESCRIPTION:Speakers: Илья Васильев (Владимирович) \, Aleksandr Bagrov (Romanovich)\nTo optimize the processes of nuclear fus ion on the ion-plasma generator [1]\, a model was constructed that describ es the dynamics of particle motion inside the fusion chamber. The synthesi s chamber is a magneto-optical system of solenoids and quadrupole lenses\, thereby performing the functions of confining and focusing ion flows. Usi ng known formulas for the magnetic field of a finite-dimensional solenoid [2] and solving these equations numerically\, it is possible obtain the di stribution of the magnetic field for a system of solenoids. Performing a s imilar calculation for magnetic quadrupole lenses\, it is possible calcula te the superposition of a system of such fields\, thereby obtaining the ge neral picture of the magnetic field inside the synthesis chamber presented in [1].\nThe plasma dynamics inside the synthesis chamber can be describe d using the equations of magnetohydrodynamics. In our case\, the plasma mo ves in a magnetostatic field\, but which varies discretely. Calculations h ave been made for individual magnetic quadrupole lenses consequence for ch arged particle flows compacting in strong magnetic fields\, including puls ed ones\, and their advantages have been well studied and known [3–5]. I on fluxes are considered as an ideal gas when describing particle velociti es and describe them by Maxwell's equation. By changing the parameters of the magnetic lens\, it is possible to change the parameters of the current s inside the synthesis chamber\, which just affect the distribution of par ticles in space\, which leads to a more structured target for more accurat e further analysis bombardment by other streams. As the result of the work \, graphical dependences of the distribution of microcurrents and concentr ations in the optimal sequence of solenoid and quadrupole magnetic fields are obtained.\n\n1. Dolgopolov M.V.\, Radenko V.V.\, Zanin G.G. etc. 2022 Electronically Controlled Plasma Power Devices for Sustainable and Environ mentally Friendly Electric Energy Technologies // Advances in Engineering Research. Issue 210. P. 197-205\n2 Callaghan E. E.\, Maslen S. H. 1960 NAS A Technical Note D-465\n3. Watterson J I W\, 2000 International Atomic Ene rgy Agency 31 P. 5-14\n4. Dolgopolov M V et al.\, 2019 EPJ Web of Conferen ces 222 02014\n5. Tyrsa V E\, Burtseva L P\, 2003Technical Physics 48(7) P . 807-812\n\nhttps://events.sinp.msu.ru/event/8/contributions/390/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/390/ END:VEVENT BEGIN:VEVENT SUMMARY:Neutron multiplicity of transplutonium nuclei DTSTART;VALUE=DATE-TIME:20220715T103000Z DTEND;VALUE=DATE-TIME:20220715T105000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-391@events.sinp.msu.ru DESCRIPTION:Speakers: Anna Bezbakh (JINR)\nThe calculations of neutron mul tiplicity distributions were carried out with the improved scission point model (ISPM) [1] for 252Cf\, 248Cm\, and 246Fm nuclei. Within the ISPM the probabilities of formation of different scission configurations as well a s the available excitation energy at scission were found based on the calc ulation of the potential energy as a function of mass and charge numbers o f the fragments and their deformation parameters. In order to account for pre-equilibrium effects\, the energy distribution between fission fragment s and evolution of the deformation of the fragments are taken into conside ration. The necessity of account for pre-equilibrium processes for the con sidered nuclei is discussed. The results are compared with the experimenta l data provided in Ref. [2] and with other models [3]. The average number of neutrons per spontaneous fission process and the corresponding uncertai nties are presented. \n\n1. A. V. Andreev et al.\, EPJ A 30.3\, 579 (2006) . \n2. A.V. Isaev et. al\, arXiv:2203.11802 [nucl-ex] (2022).\n3. K.-H. S chmidt\, B. Jurado\, C. Amouroux\, C. Schmitt\, Nuclear Data Sheets 131\, 107 (2016).\n\nhttps://events.sinp.msu.ru/event/8/contributions/391/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/391/ END:VEVENT BEGIN:VEVENT SUMMARY:THE PIPLAN2021 PROTON AND CARBON ION RADIATION THERAPY TREATMENT P LANNING SYSTEM DTSTART;VALUE=DATE-TIME:20220712T095000Z DTEND;VALUE=DATE-TIME:20220712T101000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-392@events.sinp.msu.ru DESCRIPTION:Speakers: Igor Degtyarev ()\nThis paper describes the main fea tures of newest version of the PIPLAN Proton-Carbon Ion Radiation Therapy Treatment Planning System. The PIPLAN 2021 code [1] was assigned for prec ise Monte Carlo treatment planning for heterogeneous areas\, including lun g\, head and neck location. Three various computer methods are used to mod eling the interactions between the proton and carbon ion beam and the pati ent's anatomy to determine the spatial distribution of the radiation physi cal and biological dose. The first algorithm is based on the use of the RT S&T 2021 precision radiation transport code system. The RTS&T [1] code (Ra diation Transport Simulation and Isotopes Transmutation Calculation) was a ssigned for detailed Monte Carlo simulation of many particle types (γ\, e ±\, p\, n\, π±\,\, \, antinucleons\, muons\, ions and etc.) transport i n a complex 3D geometry's with composite materials in the energy range fro m a fraction eV to 20 TeV and calculation of particle fluences\, radiation field functionals and isotopes transmutation problem as well. A direct us ing of evaluated nuclear data libraries (data-driven model) (ENDF/B\, ROSF OND\, JENDL\, BROND\, TENDL etc. - total 14 libraries) to N\, d\, t\,3He\, 4He particles transport and isotopes transmutation modeling in low and int ermediate (E<200 MeV) energy regions is the general idea low-energy part o f the RTS&T code. In general\, this approach is limited by the available e valuated data to particle kinetic energies up to 20 MeV\, with extensions up to 30 MeV or 200 MeV. To generate the output characteristics of seconda ry particles in NA-interactions in the energy region exceeding 200 MeV\, a s well as to model acts of inelastic hA- and AA interactions in the entire range of energies under consideration\, software implementations of the J QMD model (JAERI Quantum Molecular Dynamics) were used and the cascade-exc iton model (CASCADE)\, including the generation of nuclear fragments in bo th the post-cascade and fast stages of the reaction (up to the complete br eak-up of the nucleus). In the process of transport simulation\, the decay processes of metastable fragments with the subsequent transport of decay products were considered.The second and third algorithms are based on the original Bortfeld’s [2] and Ulmer’s [3] methods for primary proton bea m and adapted these algorithms for primary carbon ion beam. \n\n1. I.I. De gtyarev\, F.N. Novoskoltsev\, O.A. Liashenko\, E.V. Gulina\, L.V. Morozova \, The RTS&T-2014 code status\, Nuclear Energy and Technology\, v.1\, Issu e 3\, Nov. 2015\, p.222-225.\n2. T. Bortfeld\, An analytical approximation of the Bragg curve for therapeutic proton beams\, Med. Phys.\, 24(12)\, D ec. 1997. p. 2024-2033.\n3. W. Ulmer\, E. Matsinos\, Theoretical methods f or the calculation of Bragg curves and 3D distributions of proton beams\, The European Physical Journal Special Topics\, v. 190\, p.1–81\, 2010.\n \nhttps://events.sinp.msu.ru/event/8/contributions/392/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/392/ END:VEVENT BEGIN:VEVENT SUMMARY:Energy conversion in electronically controlled discrete ion-plasma dynamics installations DTSTART;VALUE=DATE-TIME:20220715T101000Z DTEND;VALUE=DATE-TIME:20220715T103000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-393@events.sinp.msu.ru DESCRIPTION:Speakers: Vitaly Radenko (Scientific and Production Company ”New Energy” LLC)\, Alexander Chipura (Samara University)\nThe techniq ue and technology for the creation and formation of electronically control led ion and plasma fluxes in the magnetic fields by grouping the flows wit h setting certain sequences of the self-following have been worked out to solve the problem of controlled nuclear fusion. The operation of the units is based on the physical principles of plasma and ion flows compaction wi th a discrete change in the control parameters of magnetooptical systems. Theoretical and applied aspects of the magnetodynamic flow of controlled p lasma simulation are considered. The description of an example circuit for the plasma neutron generator and the rationale for the discretization of compacted plasma and ion flows based on the introduction of the concept of flows discretes are considered. The processes of experimental installatio n of an electronically controlled ion generator and the characteristics of a prototype industrial installation are considered. Nuclear reactions sui table for modifications of such generators are considered. It is planned t hat the electronically controlled plasma energy converter device will have the design thermal power more than 10 kW\, electric power more than 5 kW. On the basis of the technology under consideration\, the neutron generato r with the plasma target will be created with the impulse of neutron flux from 1010 c−1.\n\n1. G. A. Mesyats\, Pulsed power\, Springer (2005).\n2. N. Burtebaev et al.\, World Academy of Science\, Engineering and Technolo gy. 74\, 176 (2011).\n3. V.V. Radenko etc. Advances in Engineering Researc h. 210\, 197 9(2022).\n\nhttps://events.sinp.msu.ru/event/8/contributions/ 393/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/393/ END:VEVENT BEGIN:VEVENT SUMMARY:ASYMMETRY EFFECTS MODELLING IN SLOW NEUTRONS INDUCED PROCESSES ON 35CL NUCLEUS DTSTART;VALUE=DATE-TIME:20220712T141000Z DTEND;VALUE=DATE-TIME:20220712T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-394@events.sinp.msu.ru DESCRIPTION:Speakers: Alexandru Ioan Oprea (Frank Laboratory of Neutron Ph ysics\, Joint Institute for Nuclear Research\, Dubna\, MO\, Russian Federa tion)\nAsymmetry and spatial parity non-conserving effects were investigat ed in slow neutrons induced processes on 35Cl nucleus. Forward — backwar d\, left — right and parity non conservation effects were evaluated in t he (n\,p) reaction for neutrons energy up to 1 keV. Cross sections\, neces sary angular correlations\, asymmetry and spatial parity breaking effects were evaluated in the frame mixing parity of compound nucleus states with the same spin and opposite parities [1\,2]. Theoretical evaluations of the effects were compared with experimental data obtained at FLNP JINR Dubna and Peterburg Nuclear Physics Institute [3\,4]. Forward — backward\, lef t — right and parity non conservation effects are important because usin g theoretical evaluations and experimental results\, matrix element of wea k non leptonic interaction can be obtained [4]. \nFor each investigated ef fect\, angular correlations were obtained using (n\,p) reaction amplitudes from [1\,2]. Further\, applying direct Monte-Carlo method theoretical exp ressions and numerical evaluation of protons angular distributions were ob tained considering different possible terms in angular correlations. Using protons angular distribution\, computer simulation of the asymmetry and p arity breaking effects were realized considering targets with finite dimen sions and different densities. For each analyzed effect. precision of the experiment was determined and from computer modeled asymmetry coeffcients weak matrix elements was extracted.\nThe present results will be applied i n the investigations of new experiments proposed at intense neutrons sourc e IREN\, from FLNP JINR Dubna dedicated for the measurements of asymmetry effects in the 35Cl(n\,p)35S nuclear reaction with slow neutrons.\n\n1. V. E. Bunakov\, L.B. Pikelner\, Progess in Particle and Nuclear Physics\, 39\ , 337 (1997).\n2. V.V. Flambaum\, G.F. Gribakin\, Progess in Particle and Nuclear Physics\, 35\, 423 (1995).\n3. A. Antonov\, V.A. Vesna\, Y.M. Gled enov\, Soviet Journal of Nuclear Physics\, 48(2)\, 193 (1988).\n4. A.I. Op rea\, C. Oprea\, Yu.M. Gledenov\, P.V. Sedyshev\, C. Pirvutoiu\, D. Vladoi u\, Romanian Reports in Physics\, 63(2)\, 357 (2011)\n\nhttps://events.sin p.msu.ru/event/8/contributions/394/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/394/ END:VEVENT BEGIN:VEVENT SUMMARY:Prompt fission neutrons investigation at IREN in resonance neutron energy range DTSTART;VALUE=DATE-TIME:20220712T122000Z DTEND;VALUE=DATE-TIME:20220712T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-293@events.sinp.msu.ru DESCRIPTION:Speakers: Shakir Zeynalov (JINR)\nSh. Zeynalov\, O. Sidorova1\ nJoint Institute for Nuclear Research\, 141980\, Dubna Moscow region Russi a\n1Dubna State University\n\nInvestigations of prompt fission neutron emi ssion are of importance in understanding the fission process in general an d the sharing of excitation energy among the fission fragments in particul ar. Experimental activities at JINR on prompt fission neutron (PFN) emissi on are underway for more than 20 year. Main focus lies on investigations o f prompt neutron emission from the reactions 252Cf (sf) and 235U(n\,f) car ried out in JINR and EC-JRC-IRMM in the region of the resolved resonances. For the last reaction strong fluctuations of fission fragment mass and th e mean total kinetic energy distributions have been observed as a function of incident neutron energy [1\, 2]. In addition fluctuations of prompt ne utron multiplicities were also observed [3]. The goal of the present study is to verify the current knowledge of prompt neutron multiplicity fluctua tions and to study correlations with fission fragment properties. Recent m easurement of PFN multiplicity in resonance neutron induced fission of 235 U(n\,f) reaction reveal surprising result\, stimulated us to investigate t he PFN multiplicity at IREN with new high efficiency experimental setup.\ n\nReferences\n1. Zeinalov Sh.S.\, Florek M.\, Furman W.I.\, Kriatchkov V. A.\, Zamyatnin Yu. S.\, Neutron energy dependence of 235U(n\,f) mass and T KE distributions around 8.77 eV resonance VII International Seminar on Int eraction of Neutrons with Nuclear – Dubna: JINR\, -1999. -E3-1999-212. –P. 258-262.\n2. F.-J. Hambsch\, H.-H. Knitter\, C. Budtz-Jorgensen\, an d J.P. Theobald\, Fission mode fluctuation in the resonances of 235U(n\,f) \, Nuclear Physics A -1989. -Vol. 491. –P. 56 – 90.\n3. R.E. Howe\, T .W. Phillips\, C.D. Bowman\, Phys. Rev. C 13\, 195 (1976)\n\nhttps://event s.sinp.msu.ru/event/8/contributions/293/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/293/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF THE EXCITATION OF ISOMERIC STATES IN $(\\gamma\, n)$\, $(n\, 2n)$ AND $(n\, \\gamma)$ REACTIONS ON $^{198\,200}Hg$ NUCLEI DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-397@events.sinp.msu.ru DESCRIPTION:Speakers: Satimboy Palvanov (National University of Uzbekistan )\nThe isomeric ratios in reactions of the $(\\gamma\, n)$\, $(n\, 2n)$ an d $(n\, \\gamma)$ types on $^{180\,200}Hg$ nuclei in the energy range of $ 10-35$ MeV have been studied by the method of induced activity. Samples of mercury oxide (HgO) have been irradiated in the bremsstrahlung beam of th e betatron of the National University of Uzbekistan in the energy range of $10 \\pm 35$ MeV with an energy step of $1$ MeV. For $14$ MeV neutron irr adiation we used the NG-150 [1] neutron generator of the Institute of Nucl ear Physics. For the $(n\, \\gamma)$ reaction\, experiments were carried out at the ВВЗ-СM research reactor of the Institute of Nuclear Physics of the Academy of Sciences of the Republic of Uzbekistan.\n\nThe induced $\\gamma$-activity of the targets was measured on a Canberra $\\gamma$ -ra y spectrometer\, consisting of an HPGe germanium detector (with a relative efficiency of 15%\, a resolution for the $^{60}Co$ $1332$ keV line - $1.8 $ keV)\, a DSA 1000 digital analyzer\, and a personal computer with the Ge nie software package.\n\nThe experimental results have been discussed\, co mpared with those of other authors as well as considered by the statistica l model. Theoretical values of the isomeric yield ratios have been calcula ted by using code TALYS-1.6 [2].\n\n1. http://www.inp.uz \n2. A.J. Koning\ , J.P. Delaroche. Nucl. Phys. A 713 (2003) 231.\n\nhttps://events.sinp.msu .ru/event/8/contributions/397/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/397/ END:VEVENT BEGIN:VEVENT SUMMARY:SEARCH CRITERIA FOR MINERAL DEPOSITS IN THE ZONES OF MODERN AND AN CIENT VOLCANISM ON URANIUM AND THORIUM AND THEIR FISSION PRODUCTS DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-396@events.sinp.msu.ru DESCRIPTION:Speakers: Адиль яфясов (СПбгу)\nIn the work\, by the method of gamma - spectroscopy [1\,2]\, new data are presented on t he deep recharge of the Nizhnechutinsk oil field by ascending gases and hy drotherms with different elemental composition. It has been established th at formation waters\, as well as oils\, are enriched in As\, Br\, Ba\, Re\ , Ir\, Au\, REE in the fluid replenishment zones. In this case\, the great est differences relate to the distribution of uranium and thorium over the area of the deposit and over the underlying oil reservoirs.\nThe results of the studies indicate the overlap and coexistence of deposits of hydroca rbons and ore minerals in the area of ancient volcanism\, while the criter ia for the influence of the manifestation of deep processes are both the w ell-known ratios of uranium and thorium (U/Th and/or Th/U) and the establi shed we determined the values of the ratios Th/Ba\, Mo/U\, Ba/Mo. \nThe el ements Ba and Mo are fission products of uranium and thorium. In this rega rd\, we assume other types of mineralization\, associated not with the rel ease of magmas of different composition and post volcanic hydrotherms\, bu t with known exhalation mineralization. According to our ideas\, this type of mineralization is accompanied by a constant emanation of radioact ive elements U\, Th and elements of their radioactive decay along the zone s of development of modern and paleovolcanic formations. At the same time\ , oils in the Upper Devonian deposits are enriched in a number of elements \, the associations of which depend on the temperature of the ascending ga s flows. Taking into account the results obtained\, the search for deposit s of solid minerals and hydrocarbons is carried out not only in terms of U / Th\, but also according to the new criteria we have established - certa in values of the ratios Th / Ba\, Mo / U\, Ba / Mo in the composition of r ocks and accumulations of hydrocarbons.\n\n\nLiterature\n\n1.Makarova I.R. \, Laptev N.N.\, Gorobets S.A.\, Valiev F.F.\, Yafyasov A.M.\, Sergeev V.O .\, Zippa A.I.\, Sukhanov N.A.\, Makarov D. .K.\, Grishkanich AS/ Applicat ion of methods of gamma spectroscopy and IR spectroscopy for the purposes of prospecting geology. Georesources\, 2021\, No. 1. – P.17 – 29.\n2. Yafyasov A.M.\, Makarova I.R.\, Valiev F.F\, Laptev N.N.\, Gorobets S.A.\ , Sergeev V.O. / The application of gamma-spectrometry with a germanium de tector for oil and ore geology // Bulletin of the Russian Academy of Scien ces : Physics\, 8 no. - T. 86. - 2022 (in print).\n\nhttps://events.sinp.m su.ru/event/8/contributions/396/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/396/ END:VEVENT BEGIN:VEVENT SUMMARY:Probing Microscopic Properties of Superdeformed Nuclei DTSTART;VALUE=DATE-TIME:20220715T095000Z DTEND;VALUE=DATE-TIME:20220715T101000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-433@events.sinp.msu.ru DESCRIPTION:Speakers: Poonam Jain (Sri Aurobindo College\, University of D elhi)\nWe analyse superdeformed (SD) bands in 192Hg with the help of modif ied variable moment of inertia (VMI) model. In this\, we obtain the values of unknown band-head spin (I0) along with the level spin. The band-head s pin so estimated is not known experimentally in band-3. A total of 3 exper imentally known SD bands of 192Hg have been analyzed. Quantitatively good results of the γ energies and the spins for Hg band are successfully obta ined. The band-head spin for the 192Hg (b3) superdeformed band is reported . We propose the spin assignments and level energies of the 192Hg (b3) as an essential outcome of this work. It has now been resolved the tentative nature of the assignments and present a unique level scheme. These outcom es are important in near future experiments.\n\nhttps://events.sinp.msu.ru /event/8/contributions/433/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/433/ END:VEVENT BEGIN:VEVENT SUMMARY:LOW ENERGY INCOMPLETE FUSION REACTIONS: PROBING OF ENTRANCE CHANEE L EFFECTS DTSTART;VALUE=DATE-TIME:20220715T120000Z DTEND;VALUE=DATE-TIME:20220715T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-398@events.sinp.msu.ru DESCRIPTION:Speakers: ANUJ KUMAR JASHWAL (BAREILLY COLLEGE\, BAREILLY)\nDu ring last couple of years\, the probability of incomplete fusion in heavy ion induced reactions for both strongly bound and loosely bound projectile s has been observed at energies as low as 4 – 5 MeV/A [1 – 4]. The HI induced reactions are important in basic research for the fundamental unde rstanding of reaction mechanism and to test the validity of various parame ters existing in available nuclear reaction models [5 – 7]. The importan ce of measured cross-section data has been found in applied research\, mor e particularly\, in reactor technology for nuclear energy generation and w aste management. Although the dynamics of the multiplicity of processes li ke complete fusion (CF)\, incomplete fusion (ICF)\, and pre-compound (PCN) emission in heavy ion (HI) interactions at low projectile energies depend on various entrance channel parameters\, moreover the projectile energy a nd angular momentum of the compound nucleus systems are some of the key pa rameters\, which play significant role in the characterization of such pro cesses in HI reactions. The entrance channel mass asymmetry\, alpha Q-valu e\, neutron thickness\, coulomb factor (ZpZt) and target deformation are s ome important entrance channel parameters\, that affects the probability o f incomplete fusion in heavy ion reactions. In the present work an attempt has been made to have an exclusive study on aforementioned entrance chann el parameters on 12C\, 13C\, 16O\, 18 O and 14N induced reactions with var ious target systems. It is observed that proper account of these entrance channel parameters is very much essential to conclusively explain the inco mplete fusion reactions. \n\n1. K. Kumar\, T. Ahmad\, S. Ali\, I. A. Rizvi \, A. Agarwal\, R. Kumar\, and A. K. Chaubey\, Phys. Rev. C 89\, 054614(20 14).\n2. S. Mukherjee\, A. Sharma\, S. Sodaye\, A. Goswami\, and B. S. Tom ar\, Int. J. Mod. Phys. E 15\, 237 (2006). \n3. Z. T. Dai\, D. Q. Fang\, Y . G. Ma\, X. G. Cao\, G. Q. Zhang\, and W. Q. Shen\, Phys. Rev. C 91\, 034 618 (2015).\n4. A. Agarwal et al.\, Phys. Rev. C 105\, 034609 (2022). M. Goeppert-Mayer\, Phys. Rev. 78\, 16 (1950).\n5. M. Crippa\, E. Gadioli\, P . Vergani\, G. Ciavola\, C. Marchetta and M. Bonardi\, Z. Phys. A 350 (199 4) 121.\n6. M. Cavinato\, E. Fabrici\, E. Gadioli\, E. Gadioli Erba\, P. V ergani\, M. Crippa\, G. Colombo\, I. Redaelli and M. Ripamonti\, Phys. Re v. C 52 (1995) 2577.\n7. D. J. Parker\, J. Asher\, T. W. Conlon and I. M. Naqib\, Phys. Rev. C 30 (1984) 143.\n\nhttps://events.sinp.msu.ru/event/8 /contributions/398/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/398/ END:VEVENT BEGIN:VEVENT SUMMARY:VELOCITY DISTRIBUTIONS OF PROJECTILE-LIKE FRAGMENTS IN FRAGMENTATI ON REACTIONS AT FERMI ENERGIES DTSTART;VALUE=DATE-TIME:20220712T074000Z DTEND;VALUE=DATE-TIME:20220712T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-364@events.sinp.msu.ru DESCRIPTION:Speakers: Tatiana Mikhailova (JINR)\nVELOCITY DISTRIBUTIONS OF PROJECTILE-LIKE FRAGMENTS IN FRAGMENTATION\n REACTIONS AT FERMI ENERGIES\ n\nT. I. Mikhailova1\, B. Erdemchimeg1\,2\, Yu. M. Sereda1\n1Joint Institu te for Nuclear research\, Dubna\, Russia\;\n 2 National University of Mong olia\, NRC\, Ulaanbааtar\, Mongolia\n E-mail: tmikh@jinr.ru \n\nFragment ation reactions at Fermi energies are studied for decades since 1970th. Th ey are of interest because in these reactions nuclei far from stability li ne are produced. The properties of these exotic nuclei can shed light on b etter understanding the nature of nuclear forces. The striking feature of heavy-ion induced fragmentation reactions is that the velocities of projec tile-like fragments are peaked at projectile velocity. This would be natur al for the reactions at relativistic energies in which direct processes pr evail\, but not so evident at lower ones which have dissipative nature. It is therefore of interest to understand in detail the production mechanism of these fragments. In these report we analyze velocity distributions of forward emitted fragments for several reactions on Be and Ta targets at en ergies in the vicinity of Fermi energy in terms of microscopic approach [1 ]. We also deduce the ratio of direct and dissipative components [2] as a function of mass fragment and study its dependence on the projectile energ y and other characteristics of the reaction. This can be helpful in planni ng future experiments with radioactive beams. \n\n\n1 T. I. Mikhailova et al.\, EPJ Web of Conferences. 173. 04010 (2017).\n2 B. Erdemchimeg et al. \, Bulletin of RAS: Physics. 85. 1457. (2021).\n\nhttps://events.sinp.msu. ru/event/8/contributions/364/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/364/ END:VEVENT BEGIN:VEVENT SUMMARY:Studies of excited states of 9Be in the region of 11-13 MeV excita tion DTSTART;VALUE=DATE-TIME:20220715T141000Z DTEND;VALUE=DATE-TIME:20220715T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-327@events.sinp.msu.ru DESCRIPTION:Speakers: Viktar Starastsin (National Research Center «Kurcha tov Institute»)\nThe angular distributions for the 11.28 MeV\, 11.82 MeV and 13.79 MeV states are obtained from the experiment on the scattering of alpha particles with energies of 30 and 90 MeV. The analysis of the obtai ned data was carried out using the DWBA model\, which made it possible to determine the values of the spin-parity of the states under study. Determi ning the value of the spin-parities made it possible to assign these level s to the corresponding bands in the $^9$Be nucleus.\n\nhttps://events.sinp .msu.ru/event/8/contributions/327/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/327/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY EXCITATION OF ISOMERIC STATES IN $(\\gamma\,n)$\, $(n\,2n)$ AND $(n\,\\gamma)$ REACTIONS ON $^{108\,110} Pd$ DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-399@events.sinp.msu.ru DESCRIPTION:Speakers: Satimboy Palvanov (National University of Uzbekistan )\nThis work presents work results of investigation of the isomeric yield ratios of the $^{110} Pd (\\gamma\,n)^{109m\,g} Pd$\, $^{110} Pd (n\,2n) ^ {109m\,g} Pd$ and $^{108} Pd (n\,\\gamma) ^{109m\,g} Pd$ reactions. The is omeric yield ratios were measured by the induced radioactivity method. Sam ples of natural Pd (Palladium metal foils) have been irradiated in the bre msstrahlung beam in the energy range of $10\\div 35$ MeV with energy step of $1$ MeV. For $14$ MeV neutron irradiation\, we used the NG-150 neutron generator. For the $(n\, \\gamma)$ reaction\, experiments were carried out at the ВВЗ-СМ research reactor of the Institute of Nuclear Physics o f the Academy of Sciences of the Republic of Uzbekistan.\n\nThe gamma spec tra reactions products were measured with a spectroscopic system consistin g of HPGe detector CANBERRA with energy resolution of $1.8$ keV at $1332$ keV gamma ray of $^{60} Co$\, amplifier 2022 and multichannel analyzer 819 2 connected to computer for data processing. The filling of the isomeric a nd ground levels was identified according to their $\\gamma$ lines. The va lues of isomeric ratios for the reactions $(\\gamma\, n)$\, $(n\, 2n)$ and $(n\, \\gamma)$ are respectively: $0.063 \\pm 0.003$ (at $E_{\\gamma max} = 30$ MeV)\; $0.43 \\pm 0.03$ (at $E_n=14.1$ MeV) and $9.1 \\pm 0.8$. Usi ng the isomer yield ratio and the total cross section of the $(\\gamma\, n )$ reaction on $^{110} Pd$ [1] received the cross sections of $(\\gamma\, n) ^m $ and $(\\gamma\, n) ^g $ reactions. The cross section isomeric rati os at $E_{\\gamma}=E_m$ are estimated.\n\nThe isomeric cross-section ratio s were determined in the case of the reaction $(n\, 2n)$. In order to obta in the absolute values of the cross sections for the ground state and fot the isomeric state\, use was made of methods based on comparing the yields of the reaction under study and the monitoring reaction. The reaction $^{ 27} Al (n\,\\alpha) ^{24} Na$ ($T_{1/2} = 15$ h\, $E_{\\gamma} = 1368$ keV ). For reaction $(n\, \\gamma)$\, $^{197} Au (n\, \\gamma)$ was used as a monitor reaction.\n\nThe experimental results have been discussed\, compar ed with those of other authors as well as considered by the statistical mo del. Theoretical values of the isomeric yield ratios have been calculated by using code TALYS-1.6.\n\n1. A.V. Varlamov et al. Atlas of GDR. INDS(NDS )-394.// Vienna: IAEA\, 1999.\n\nhttps://events.sinp.msu.ru/event/8/contri butions/399/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/399/ END:VEVENT BEGIN:VEVENT SUMMARY:EXTRAPOLATION OF THE LOWEST STATE ENERGIES IN SUPERHEAVY EVEN-EVE N NUCLEI DTSTART;VALUE=DATE-TIME:20220715T091000Z DTEND;VALUE=DATE-TIME:20220715T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-403@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Efimov (PTI A.F. I.)\nIn this report the v arious approaches [1\,2\,3] to the state energy estimations for su-perhe avy nuclei are discussed. In [1\,2]\, for even-even nuclei\, a correlation between the state energies and the deformation energies was found and p arametrization of the correlation curve was obtained. For determination of extrapolation parameters the experimentally known energies of states wer e applied. If the proposed parametrization is successful\, then it can be used to predict the unknown energies. For such prediction it is necessary to have data on deformation energies obtained within the framework of a u nified technique. In different versions of the calculation\, the deformati on energies may differ\, but its correlations with the energy – remain. In different versions of the calculation the deformation energies differ\ , but this leads only to a change in the scale along the energy axis\, and don’t change the form of the correlation curve. Our estimations show\, than determination of the unknown energies for superheavy nuclei from th e correlation curve have the accuracy corresponding to the accuracy of the discussed extrapolation curves. In [3] the microscopic variant of the Gro dzins relation derived based on the geometrical collective model and a mic roscopic approach to the description of excitation energies of the state s for nuclei. In this case\, the starting point of the prediction is not the deformation energy\, but the value of the deformation parameter. \nIn this paper\, we consider several variants [4\, 5] of the deformation energ y calculations. Obtained extrapolations are presented in two figures. At t he first the deformation energies in accordance with [4] and two extrapola tions are considered - without and taking into account nuclei with state energies greater than 60 keV. The second figure shows the extrapolation a ccording to the data from [5]. From the presented correlation curves\, the estimations of the unknown energies of lowest states are obtained.\n\nhtt ps://events.sinp.msu.ru/event/8/contributions/403/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/403/ END:VEVENT BEGIN:VEVENT SUMMARY:INVESTIGATION OF SECONDARY ELECTRON EMISSION PROCESSES IN ACCELERA TOR CHARGED PARTICLE BEAM MONITORING SYSTEMS DTSTART;VALUE=DATE-TIME:20220713T074000Z DTEND;VALUE=DATE-TIME:20220713T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-401@events.sinp.msu.ru DESCRIPTION:Speakers: E. O. Zemlin ()\nToday\, charged particle accelerat ors play an important role for the study of the nuclei structure\, element ary particle physics and for the production of radionuclides used in medic al technologies. An important condition for these accelerators operation i s to improve the quality of the extracted beams. Therefore\, one of the ma in instruments of accelerator and beam technologies are the systems for ch arged particle beams diagnostic\, which make it possible to obtain informa tion about the main parameters of the beam: beam profile\, beam current\, beam emittance. To monitor charged particle beams and increase their inten sity on the targets are often use sensors. The operation of such sensors b ased on secondary electron emission processes. In this work\, the monitori ng system for charged particle beams (consists of a scanning gold-plated t ungsten wires grid and placed inside of the accelerator beam pipe) is disc ussed. The beam particles interact with the wires and knock out secondary electrons. As a result\, each wire becomes a current generator and current is proportional to the intensity of the beam particles. By measuring the current from each wire\, one can reconstruct the beam profile and investig ate the secondary electron emission processes.\nIn present work the mechan isms of current distributions caused by space charges of secondary electro ns formed during the passage of heavy ion and proton beams (used cyclotron of the A.F.Ioffe Institute\, Russian Academy of Science) through a grid o f thin scanning wires were studied. Also a model for the visualization of the beam profile was developed\, and the main parameters of secondary elec tron emission processes with beam intensity were determined.\n\nhttps://ev ents.sinp.msu.ru/event/8/contributions/401/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/401/ END:VEVENT BEGIN:VEVENT SUMMARY:DIAGNOSTIC REFERENCE LEVELS IN NUCLEAR MEDICINE IN RUSSIAN FEDERAT ION DTSTART;VALUE=DATE-TIME:20220712T093000Z DTEND;VALUE=DATE-TIME:20220712T095000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-402@events.sinp.msu.ru DESCRIPTION:Speakers: Larisa Chipiga (Research Institute of Radiation Hygi ene named after P.V. Ramzaev\, St. Petersburg\, Russia)\, Aleksandr Vodova tov (Research Institute of Radiation Hygiene named after P.V. Ramzaev)\nDe ar collegues\,\nAttached is my abstract.\n\nhttps://events.sinp.msu.ru/eve nt/8/contributions/402/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/402/ END:VEVENT BEGIN:VEVENT SUMMARY:Analysis of cluster radioactivity using Q-value dependent relative separation DTSTART;VALUE=DATE-TIME:20220712T151000Z DTEND;VALUE=DATE-TIME:20220712T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-209@events.sinp.msu.ru DESCRIPTION:Speakers: Chahat Jindal (Thapar Institute of Engineering and t echnology\,Patiala\,India)\, Nitin Sharma (School of Physics & Materials S cience\, Thapar Institute of Engineering and Technology\, India\, Patiala 147004\, India)\, Manoj Kumar Sharma (School of Physics & Materials Scien ce\, Thapar Institute of Engineering and Technology\, India\, Patiala 147 004\, India)\nThe spontaneous disintegration of an unstable nucleus to att ain a relatively stable configuration is known as radioactivity. Generall y\, it is considered that the radioactive decay happens via emission of th e alpha particle\, beta particle and gamma radiation. Apart from this\, cl uster radioactivity (CR)\, heavy particle radioactivity (HPR) and spontane ous fission (SF) are also probable ground state emission modes. The sponta neous splitting of a unstable parent nucleus into fragment heavier than th e α-particle but lighter than the fission fragments is known as cluster r adioactivity (CR). It was theoretically predicted in [1]\, and then experi mental verification was done by Rose and Jones [2]\, where 14C was detecte d from 223Ra radioactive parent nucleus. In past few decades\, different e xperimental and theoretical attempts [3\,4] were made to explore the clust er radioactive emission modes. Numerous theoretical models are introduced to explore such complex decay mode on the basis of different nuclear prope rties (size\, shape\, magicity etc.).The preformed cluster model (PCM) is one such model [5] which is successfully employed to address the cluster r adioactivity and other competing ground state decay modes. PCM works out in terms of the mass asymmetry coordinate η and relative separation dista nce R. The preformation probability (η-motion) and the penetration probab ility (R-motion) are calculated at a fixed turning point Ra\, which is the sum of the relative separation at touching configuration and the neck len gth parameter “∆R”. In the present work\, we have estimated Q-value dependence of Ra \,which can be further utilize to calculate the decay hal f-lives and other decay properties of the radioactive nuclei. The work inc ludes the study of CR by taking spherical choice of the decaying fragments . It will be of further interest to extend this work to study the comparat ive analysis of cluster dynamics with other ground state channels such as alpha-decay\, hpr\,and sf etc.\n\nhttps://events.sinp.msu.ru/event/8/contr ibutions/209/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/209/ END:VEVENT BEGIN:VEVENT SUMMARY:PROMPT FISSION NEUTRON SPECTRA OF 235U AND 239PU DTSTART;VALUE=DATE-TIME:20220712T124000Z DTEND;VALUE=DATE-TIME:20220712T131000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-586@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Maslov ()\nPre-fission neutrons influence t he observed prompt fission neutron spectra (PFNS)\, TKE\, average number o f prompt fission neutrons\, (n\,F) and (n\,xn) reaction cross sections. Th ough pre-fission neutrons in 235U(n\,F) were first observed around En~14 M eV [1] and then at En~7 MeV [2]\, only now measured data base [3-6] allows to demonstrate the complex influence of fissility of nuclides 236U and 2 40Pu on the PFNS shape. The model parameters are fixed at thermal neutron energy [7] and the renormalized for the TKE measured data.\n The PFNS shap es at En ~6-7 MeV are strongly correlated with nuclide fissilities in 235U (n\,xnf) and 239Pu(n\,xnf) reactions and competition of (n\,xnX) reactions . Calculated exclusive (n\,nγ)\, (n\,2n)1\,2 and (n\,nf)1 pre-fission neu trons spectra allow to demonstrate that the amplitude of (n\,nf) spectra i s the largest for 235U(n\,F) at En ~6.5 MeV (Fig.1) while for 239Pu(n\,F) at En ~6.0 MeV (Fig. 2). When (n\,nf) reaction competes only with (n\,nγ) reaction\, the pre-FNS shapes are rather similar (En ~ 5.5 MeV)\, though the contribution of (n\,nf)1 is much higher in case of 235U(n\,F) reaction . When the (n\,2n) reaction channel opens\, the pre-FNS shapes reveal dras tic influence of (n\,2n)1 and (n\,2n)2 neutron spectra. The fig. 1 demonst rates partials for 235U(n\, F) reaction\, the numerical data [8] are compa tible with data [4\,5]. The fig. 2 demonstrates partials for 239Pu(n\, F) reaction\, while the data [3-6] are compatible with predicted (n\,xnf) con tributions [9]. The lower curves and data points show the partitioning of the PFNS into the (n\, f)\, (n\,nf) and (n\,nf)1 contributions. \n1. Yu.A . Vasil’ev\, Yu.S. Zamyatnin et al.\, Soviet Physics JETP\, 11\, 483 (19 60).\n2. A. Bertin\, R. Bois\, J. Frehaut 3d All Union Conf.on Neutron Phy s.\,Kiev\,9-13 Jun 1975\, Vol.4\, p.303 (1975).\n3. P. Marini\, J. Taieb\, B. Laurent\, et al.\, Phys. Rev. C 101\, 044614 (2020).\n4. K.J. Kelly et al.\, Eur. Phys. Journ. Web of Conf.\, 2020\, v. 239\, 05010.\n5. K.J. K elly\, M. Devlin\, J.A. Gomez\, et al.\, LA-UR-18-30526\, 2018.\n6. K. J. Kelly\, M. Devlin J.M. O’Donnel et al\, Phys. Rev. C 102\, 034615(2020). \n7. V.M. Maslov\, N.A. Tetereva\, V.G. Pronyaev et al.\, Atomic Energy\, 108\, 432 (2010)\n8. V.M. Maslov\, N.V. Kornilov\, A.B. Kagalenko et al.\, Nucl. Phys. A 760\, 274 (2005)\, https://www-nds.iaea.org/minskact/data/9 2235f18.txt.\n9. V.M. Maslov\, Atomic Energy\, 103\, No. 2\, 633 (2007)\n\ nhttps://events.sinp.msu.ru/event/8/contributions/586/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/586/ END:VEVENT BEGIN:VEVENT SUMMARY:Cross-section measurement for the 7Li(p\,p’)7Li and 7Li(p\, )4He reaction DTSTART;VALUE=DATE-TIME:20220715T143000Z DTEND;VALUE=DATE-TIME:20220715T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-405@events.sinp.msu.ru DESCRIPTION:Speakers: D. Kasatov ()\nReliable data on the 7Li(p\,)4He a nd on 7Li(p\,p’γ)7Li reactions cross section are important for many app lications\, including fusion and accelerator neutron sources with a lithiu m target. The existing cross-section datasets in the literature are unfort unately inadequate and discrepant in many cases. Measurements of the react ions cross section were carried out at the accelerator-based neutron sourc e at the Budker Institute of Nuclear Physics (Novosibirsk\, Russia) using a NaI\, HPGe γ-ray and alpha spectrometers . The 7Li(p\,p’γ)7Li reacti on cross section and 478 keV photon yield from a thick lithium target at p roton energies from 0.65 MeV to 2.225 MeV have been measured with high acc uracy. The 7Li(p\,)4He reaction cross section is determined for proton energies E = 0.6-2 MeV. The experimental data are compared to the data fro m literature\, when available.\nPlans to measure the 11B(p\,) neu tronless fusion reaction cross section.\nThe report will describe the neut ron source VITA\, present and discuss the results obtained\, and declare p lans.\nThis research was supported by Russian Science Foundation\, grant N o. 19-72-30005.\n\nhttps://events.sinp.msu.ru/event/8/contributions/405/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/405/ END:VEVENT BEGIN:VEVENT SUMMARY:DIFFRACTION PROCESSES IN 12-C ELASTIC SCATTERING BY MEDIUM NUCLEI DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-404@events.sinp.msu.ru DESCRIPTION:Speakers: Vyacheslav Dyachkov (al-Farabi Kazakh National Unive rsity)\nThe study of multicluster structures of a nucleus is an urgent tas k due to the fact that the influence of cluster states\, both excited and ground\, rather strongly affects the properties of the nuclei under study. In the framework of the diffraction theory and under the assumption of co mplete absorption inside the interaction sphere\, in this work\, the autho rs obtained expansions of the total amplitudes of the angular distribution s of the differential cross sections for elastic scattering of 12-C on nuc lei up to 40-Ca. The study of such diffraction processes using the method [1] makes it possible to reveal the partial scattering amplitudes and thei r contribution to the total amplitude\, which characterize the multicluste r structure of the nucleus. For a comprehensive analysis of the multiclust er structure of nuclei\, the authors of [2] proposed an experimental metho d for the direct detection of cluster structures in the nucleus. The avail able world experimental data are described within the framework of the met hod. This method showed itself well in the study of alpha-cluster 4n nucle i. However\, for 4n±1 nuclei\, a third component was added to the total a mplitude [1]. This modification of the method made it possible to describe a larger range of light atomic nuclei. Until now\, only incident alpha pa rticles have been analyzed. In [3]\, the authors performed an analysis of the angular distributions of the differential cross sections of elasticall y scattered 16-O on 4n nuclei\, which fairly well described the experiment al data up to 40-Ca.\nIn this work\, the authors chose 12-C as the inciden t particles. As a result\, an analysis of the differential cross sections of elastic diffraction scattering of 12-C on medium nuclei at energies fro m tens to hundreds of MeV was performed using a modified method of angular distributions. From a systematic analysis of the previous and results of this work\, it was obtained and shown that clusters with characteristic ra dii of 1 fm and 0.5 fm are mainly detected.\nThis research has been funded by the Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan (Grant No. AP09258978).\n\n 1. V.V. Dyachkov\, K.S. Dyussebayeva\, Yu.A. Zaripova and A.V. Yushkov. Phys. At. Nuc. 83(12). 17 05 (2020).\n 2. Yu.A. Zaripova\, V.V. Dyachkov\, A.V. Yushkov\, T.K. Zhold ybayev and D.K. Gridnev. Int. J. Modern Phys. E. 27(2). 18500171 (2018).\n 3. V.V. Dyachkov\, Yu.A. Zaripova\, A.V. Yushkov and M.T. Bigeldiyeva. Bo ok of abstracts “NUCLEUS – 2021”. 306 (2021).\n\nhttps://events.sinp .msu.ru/event/8/contributions/404/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/404/ END:VEVENT BEGIN:VEVENT SUMMARY:ON THE POSSIBILITY OF USING THE QUANTUM-FIELD APPROACH TO MODELING THE INTERACTION OF MATTER WITH NEUTRINOS TO STUDY THEIR ROLE IN ASTROPHYSICAL PROCESSES DTSTART;VALUE=DATE-TIME:20220713T124000Z DTEND;VALUE=DATE-TIME:20220713T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-407@events.sinp.msu.ru DESCRIPTION:Speakers: Yury М. Pismak (Department of High Energy and El ementary Particle Physics\, State University of Saint-Petersburg\,)\n**st rong text**\n\nhttps://events.sinp.msu.ru/event/8/contributions/407/ LOCATION: Физический ф-т\, ауд 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/407/ END:VEVENT BEGIN:VEVENT SUMMARY:THE METHOD FOR VISUALIZATION QUALITY ASSESSING FOR THE OBJECTS IN POSITRON EMISSION TOMOGRAPHY IMAGES DTSTART;VALUE=DATE-TIME:20220714T120000Z DTEND;VALUE=DATE-TIME:20220714T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-406@events.sinp.msu.ru DESCRIPTION:Speakers: E.V. Emelianenko ()\nDosimetric planning of radiatio n treatment using positron emission tomography (PET) images is a promising area that has received special attention in recent years [1]. The PET/CT method makes it possible to improve the accuracy of determining the bounda ries of the irradiation volume. However\, the use of PET images for radiot herapy planning complicates the low spatial resolution (compared to CT and MRI)\, as well as respiratory movements\, which affect the formation of c ontours and volumes of pathological foci of radiopharmaceutical accumulati on [2]. The technological process in conditions of high throughput of the PET department does not allow performing each examination using synchroniz ation with the respiratory gating system.\nTo assess the effect of respira tory movements on image characteristics\, the authors developed a device c onsisting of a movable platform and a water-filled phantom installed on it with six spheres installed inside with diameters of 37 mm\, 28\, 22\, 17\ , 13\, 10 mm. The phantom and spheres were filled with 18 F -FDG in a rati o of 1/6 (background volume activity/volume activity in the spheres). 8 cy cles of phantom scanning (4 in static\, 4 in dynamic states) were performe d on PET/CT DISCOVERY IQ. Each of the spheres was competed in static and d ynamic positions of the phantom according to PET images. Contouring was pe rformed using a color gradient at levels of 80%\, 70%\, 50% of the maximum value of volumetric activity (kBq/ml).\nCalculation of contoured volumes by PET image and comparison with nominal volumes were performed. The minim um error in calculating the volume for a sphere of 10 mm was achieved with contouring at the level of 50% of the maximum value of volumetric activit y. However\, the volume of spheres with a diameter of more than 10 mm was overestimated both in images obtained in static and dynamic positions.\n\n 1. The use of PET/CT in radiotherapy planning: contribution of deformable registration / E. Delikgoz Soykut [et al.] // Frontiers in Oncology. - 20 13. - Vol. 3.\n2. Use of PET and PET/CT for Radiation Therapy Planning: I AEA expert report 2006–2007 / M. MacManus [et al.] // Radiotherapy and O ncology. - 2009. - Vol. 91\, No. 1. - P. 85-94.\n\nhttps://events.sinp.msu .ru/event/8/contributions/406/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/406/ END:VEVENT BEGIN:VEVENT SUMMARY:CHARGE DISTRIBUTIONS FOR NUCLEI-ISOBARS DURING 238U PHOTOFISSION DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-408@events.sinp.msu.ru DESCRIPTION:Speakers: Aleksander Kuznetsov (Skobeltsyn Institute of Nuclea r Physics\, Lomonosov Moscow State University\, Russia\; Faculty of Physic s\, Lomonosov Moscow State University\, Russia)\nAn experimental and theor etical study of the charge distribution for isobar nuclei during photofiss ion of 238U nuclei has been carried out. To study fragments of photofissio n of 238U nuclei\, a gamma-activation method was used\, that is\, a method in which the radioactivity induced in the target by a beam of γ-quanta f rom an accelerator is analyzed. An experiment on the irradiation of a uran ium target was carried out on the bremsstrahlung of the RTM55 accelerator of the Institute of Nuclear Physics\, Moscow State University\, with a bea m energy of 55 MeV. The charge distributions of fission fragments were obt ained for chains of nuclei with mass numbers: 131\,132\,133 and 139. The r esults obtained in the experiment were compared with the results of work p erformed on bremsstrahlung beams of gamma quanta and proton beams and hypo theses of unchanged charge distribution (UCD) and minimum potential energy (MPE).\nThe most probable Zp charges obtained experimentally\, as well as deviations from the predictions of the UCD and MPE models\, are presented in Table 1 below.\n\n\nА Zp(exp) Z(UCD) Zp-Z(UCD) Zp(MPE)\n131 51\,102± 0\,271 51\,068 0\,035±0\,271 50\,428±0\,057\n132 51\,290±0\,101 51\,457 -0\,167±0\,101 51\,153±0\,064\n133 51\,530±0\,209 51\,848 -0\,317±0\, 209 51\,768±0\,140\n139 54\,125±0\,001 54\,186 -0\,061±0\,001 54\,131± 0\,072\nTable 1. Comparison of experimental and theoretical values of the most probable charge for chains of nuclei with mass numbers 131\, 132\, 13 3\, and 139.\n\nhttps://events.sinp.msu.ru/event/8/contributions/408/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/408/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF COULOMB BREAKUP OF 11BE WITHIN THE NON-PERTURBATIVE SEMI CLASSICAL AND QUANTUM-QUASICLASSICAL TIME-DEPENDENT APPROACHES DTSTART;VALUE=DATE-TIME:20220715T132000Z DTEND;VALUE=DATE-TIME:20220715T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-410@events.sinp.msu.ru DESCRIPTION:Speakers: Dinara Valiolda (KazNU/BLTP JINR)\nWe investigate th e Coulomb breakup of 11Be halo nuclei on a heavy target\n(208Pb) from inte rmediate (70 MeV/nucleon) to low energies (5 MeV/nucleon) within the non-p erturbative semiclassical and quantum-quasiclassical time-dependent approa ches. \nTo quantify how good the semiclassical approach with decreasing th e projectile energy is\, we also performed calculations with quantum-quasi classical approach\, which includes the effect of deformation of the proje ctile trajectory and the transfer of energy from target to projectile and vice versa \nduring a collision. We also analyse in the frame of this mode l the influence of the 11Be resonant states 5/2+\, 3/2− and 3/2+ on the breakup processes. This analysis demonstrates the possibility of studying low-lying resonances in halo nuclei using their breakup reactions. The met hod can potentially be useful for interpretation of low-energy breakup exp eriments on different targets in studying the halo structure of nuclei.\n\ nhttps://events.sinp.msu.ru/event/8/contributions/410/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/410/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF TAGGED NEUTRINO BEAM CHARACTERISTICS AT THE U-70 ACCELERA TOR DTSTART;VALUE=DATE-TIME:20220715T093000Z DTEND;VALUE=DATE-TIME:20220715T095000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-411@events.sinp.msu.ru DESCRIPTION:Speakers: A. A. Sokolov ()\nIn accelerator-based neutrino expe riments\, the momentum of an interacting neutrino is known with poor accur acy. The type of neutrino interacting in the detector is not known definit ely also. \nThese problems could be solved by using tagged neutrino beams. The idea of tagged neutrino beams is that\, simultaneously\, with the reg istration of neutrino interaction\, a special tagging station measures the momentum of the parent particle\, as well as the momenta of other charged particles from its decay. Based on the reconstruction of the π(K)± → µ± µ(µ) or Ke3 decays kinematics of parent particles from measured da ta it is possible to reconstruct the momentum and the type of a produced n eutrino with a high accuracy [1\, 2]. \nOne of the problems that arise whe n constructing of tagged neutrino beams is how to relate the neutrino inte raction to the corresponding parent particle decay. For this\, both tempor al and spatial referencing of events registered in the neutrino detector a nd in the tagging station detectors are used.\nIn this paper\, we describe a technique for the tagged neutrino production from π± → µ± µ(µ) decays at the U-70 (Protvino) accelerator channel. The calculated charact eristics of the channel for the formation of a beam of parent particles π ± are presented. Various options of the tagging station design are consid ered. The main characteristics of the obtained tagged neutrino beams are p resented.\n\n1. A. A. Boikov et al.\, Preprint IHEP 80-156 (1980).\n2. A. A. Boikov et al.\, Preprint IHEP 80-158 (1980).\n\nhttps://events.sinp.msu .ru/event/8/contributions/411/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/411/ END:VEVENT BEGIN:VEVENT SUMMARY:ELECTRON AND POSITRON SPECTRA FROM PAMELA BY MULTIVARIATE DATA ANA LYSIS METHODS DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-409@events.sinp.msu.ru DESCRIPTION:Speakers: Павел Мухин ()\nFor 10 years\, since 2006 to 2016\, PAMELA\, a satellite-borne experiment\, had been conducting meas urements of cosmic rays [1]. Currently\, one of the open problems is resea rching cosmic-ray electron and positron energy spectra\, also their time d ependencies. The apparatus is estimated to measure these spectra combined from 50 MeV up to 1–2 TeV (600–700 GeV to determine the sign of charge ) [2\,3]. By the moment\, the PAMELA collaboration has published results o n 2006–2009 electrons and positrons spectra [3\,4]\, complementing which with the data for the rest period of the measurements with the PAMELA ins trument is the priority goal of the ongoing work.\n\nThis work presents a new approach to processing the PAMELA experimental data\, and preliminary results obtained using it. Besides the previously used complex analysis of parameters extracted from the detectors systems\, particular attention is given to machine learning methods to process this data. As such a tool\, the TMVA package of the ROOT software is used [5]\, which is applied for m ultivariate data analysis. By means of preliminary program training on the test sets of parameters derived from modeling electrons and positrons pas sing though the PAMELA detectors with GEANT4 package [6]\, this method ena bles optimizing the experimental data processing while raising its selecti on efficiency due to the 1.5 times\, compared to the ones obtained before. As an example of the application of the method\, this approach has been u sed to obtain the electron and positron fluxes and their time dependencies \, such as the flux ratios of positrons and electrons\, positrons and prot ons\, for the whole PAMELA data collection period.\n\n1. O. Adriani et al. \, La Rivista del Nuovo Cimento 10\, 473–522 (2017)\n2. P. Picozza et al .\, Astroparticle Physics 27\, 296–315 (2007)\n3. O. Adriani et al.\, Ph ysical Review Letters 106(20)\, 201101 (2011)\n4. O. Adriani et al.\, Phys ical Review Letters 111(8)\, 081102 (2013)\n5. https://root.cern/manual/tm va/\n6. https://geant4.web.cern.ch/\n\nhttps://events.sinp.msu.ru/event/8/ contributions/409/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/409/ END:VEVENT BEGIN:VEVENT SUMMARY:Nucleon resonance structure and emergence of hadron mass from CLAS /CLAS12 data DTSTART;VALUE=DATE-TIME:20220714T073000Z DTEND;VALUE=DATE-TIME:20220714T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-620@events.sinp.msu.ru DESCRIPTION:Speakers: Evgeny Isupov (SINP MSU)\nStudies of genuinely nonpe rturbative nucleon resonances (N*) structure in exclusive electroproductio n off protons shed light on emergence of the dominant part >98% of hadron mass which is one of the most important and still open problem in the Stan dard Model. [1]. The current status of the N* electroexcitation studies in connection with the insight into strong interaction dynamics in the regim e of comparable with unity OCD running coupling\, so called strong QCD reg ime\, as well as future extension of these efforts from the data of ongoin g experiments with the new CLAS12 detector in Hall B at Jefferson Lab\, wi ll be presented in the talk. CLAS experimental data on the exclusive $\\pi ^0p$\, $\\pi^+n$ and $\\pi^+\\pi^-p$ electroproduction channels provided t he first and only available in the world results on helicity N→N* transi tion amplitudes for most nucleon resonances in the mass range <1.8 GeV and at photon virtuality $Q^2$ up to 5.0 GeV$^2$ [2]. Consistent results on d ressed quark mass function obtained from independent studies of pion\, nuc leon elastic electromagnetic form-factors and electroexcitation amplitudes of $\\Delta(1232)3/2+$\, N(1440)1/2+\, and $\\Delta(1600)3/2+$ resonances conclusively demonstrated the capability to map out momentum dependence o f dressed quark mass getting insight into emergence of hadron mass (EHM) f rom QCD.\nThe CLAS12 detector [3] is the only facility in the world capabl e to explore N* electroexcitation amplitudes at $Q^2$ >5.0 GeV$^2$ where t he transition from the strong to the perturbative QCD regimes is expected and where the dominant part of hadron mass is generated. These studies wil l address key open problems of the Standard Model on the nature of hadron mass\, quark-gluon confinement\, and their emergence from QCD in connectio n with dynamical chiral symmetry breaking [4].\n\n1. C. D. Roberts Few Bod y Syst. 59\, 72 (2018).\n2. Carman D. S.\, Joo K.\, Mokeev V. I. Few Body Syst. (2020) 61\, 29. 1. \n3. V. D. Burkert\, L. Elouadrhiri\, K. P. Adhik ari et al. Nuclear Inst. and Methods in Physics Research\, A 959\, 163419 (2020). \n4. Brodsky S. J. et al International Journal of Modern Physics E Vol. 29\, No. 08\, 2030006 (2020).\n\nhttps://events.sinp.msu.ru/event/8 /contributions/620/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/620/ END:VEVENT BEGIN:VEVENT SUMMARY:TO YIELD STUDIES FOR THE REACTIONS 13C(gamma\, p)\, 14N(gamma\, 2p )\, 14N(gamma\, 2n) WITH (12B\, 12N)- ACTIVITY MEASUREMENTS BY DeltaE- DET ECTOR TELESCOPES AT THE PULSED ELECTRON ACCELERATOR DTSTART;VALUE=DATE-TIME:20220713T122500Z DTEND;VALUE=DATE-TIME:20220713T124500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-413@events.sinp.msu.ru DESCRIPTION:Speakers: Leonid Dzhilavyan (Institute for Nuclear Research of the Russian Academy of Sciences)\nStudies of yields for photonuclear reac tions with production of 12B((T½) = 20.2 ms) and 12N((T½) = 11.0 ms) are interesting both for development of models of nuclear reactions with nucl ei-products near the boundaries of stability to nucleon-emission\, and for detection of hidden explosives and drugs (see\, e.g.\, [1]) with (12B and 12N)- activity registration.\nIn [2\, 3]\, there were considered features of emission of gamma- quanta\, electrons and positrons from targets at de cays of produced in them (12B and 12N)- nuclei.\nIn [4] for the reactions 13C(gamma\, p)\, 14N(gamma\, 2p)\, 14N(gamma\, 2n)\, there was given analy sis of known experimental and model-calculated data (including our own one s calculated by means of the widely used models of nuclear reactions). It was shown that new yield measurements are necessary for these reactions be cause estimated discrepancies of data are on the level of 1–2 orders of magnitude. In [5]\, there were briefly considered variants of such measure ments with detecting (12B and 12N)- activities by scintillation gamma- spe ctrometers or telescopes of thin DeltaE- counters. The first variant with NaI- spectrometers was considered in [6].\nIn the present work we consider ed measuring of (12B and 12N)- activities at the pulsed electron accelerat or based on registration of emitted from the target electrons or positrons by rather thin telescopic plastic counters with usage of the controlled P MT power supply dividers for all these scintillation counters [7].\n\n 1. L.Z. Dzhilavyan. Phys. Part. Nucl. No 5\, 556 (2019).\n 2. S.S. Belyshev e t al.\, Bull. Russ. Acad. Sci.: Phys. 80\, P. 566 (2016).\n 3. S.S. Belysh ev et al.\, Bull. Russ. Acad. Sci.: Phys. 83\, P. 449 (2019).\n 4. O.I. Ac hakovskiy et al.\, Bull. Russ. Acad. Sci.: Phys. 80\, P. 572 (2016).\n 5. L.Z. Dzhilavyan. About yield measuring for the reactions 14N(gamma\, 2n)12 N and 14N(gamma\, 2p)12B. Poster Reports of the XIV International Seminar on Electromagnetic Interactions of Nuclei (EMIN – 2015\, October 5-8\, M oscow\, Russia). INR RAS\, Moscow\, 2016\, pp. 12–15.\n 6. S.S. Belyshev et al.\, Bull. Russ. Acad. Sci.: Phys. 86\, No. 4. P. 577 (2022) (in Russ ian)\n 7. L.Z. Dzhilavyan et al.\, Bull. Russ. Acad. Sci.: Phys. 83\, P. 4 74 (2019).\n\nhttps://events.sinp.msu.ru/event/8/contributions/413/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/413/ END:VEVENT BEGIN:VEVENT SUMMARY:Geant4 FTF Model Description of the NA61/SHINE Collaboration Data on Strange Particle Production in pp-interactions DTSTART;VALUE=DATE-TIME:20220712T132000Z DTEND;VALUE=DATE-TIME:20220712T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-414@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Uzhinskii (Joint Institute for Nuclear Rese arch (JINR))\nGeant4 FTF Model Description of the NA61/SHINE Collaboration Data on Strange Particle Production in pp-interactions\n\n A. Ga loyan and V. Uzhinsky\n Joint Institute for Nuclear Research\, Dubna\, Rus sia\n E-mail: uzhinsky@jinr.ru \n\n Geant4 is the well-known package f or simulation of particle penetration in matter which is used in many high energy experiments. There is FTF (Fritiof) model in Geant4. The FTF model is responsible for simulations of elementary interactions. We compare the FTF model results on inclusive distributions of Λ\, K0s\, Ξ-\, anti-Ξ+ and K*(892)0 produced in pp interactions at Plab=158 GeV/c recently measu red by the NA61/SHINE collaboration. It is found that for a good descripti on of the K*(892)0 mesons it is needed to set up the ratio of pseudo-scala r to vector meson probability as 0.4/0.6 in a production. A description o f the Ξ- and anti-Ξ+ hyperons requires a special treatment of fragmentat ion of anti-diquark – diquark strings with low masses\, and an additiona l tuning of quark and diquark fragmentation functions. With all of these\, we reproduce Λ and K0s spectra well. It is the best model description of the strange particle production in the literature. The collaboration coul d not be able to describe its data using the EPOS 1.99 model.\n\nhttps://e vents.sinp.msu.ru/event/8/contributions/414/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/414/ END:VEVENT BEGIN:VEVENT SUMMARY:Simulated and experimental characteristics of a gas-filled recoil separator DGFRS-II DTSTART;VALUE=DATE-TIME:20220712T101000Z DTEND;VALUE=DATE-TIME:20220712T103000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-436@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitriy Solovyev (FLNR JINR)\nFor further physical a nd chemical studies of superheavy elements (SHEs)\, SHE Factory was constr ucted at FLNR JINR. The facility is based on a new DC-280 heavy-ion accele rator that can deliver 48Ca beams with a projected intensity of 6*1013 ion s per second. The first experimental setup of the SHE Factory is a gas-fil led recoil separator DGFRS-2 with a QvDhQhQvD magnet configuration. A mod el of the DGFRS-2 was created using a GEANT4 toolkit. The main methods of trajectory simulations of heavy ions in gaseous media are presented:\nForm ing of a compound nucleus in the target layer.\nEvaporation of several neu trons from an excited nucleus.\nModeling of multiple scattering of ERs in the target and other separator’s media (filling gas\, a Mylar window bet ween the separator and detector volumes\, pentane in the detector chamber) .\nCalculation of energy losses in the target and gaseous media.\nModeling of an ERs recharge process in gas.\nCalculation of recoil trajectory in t he magnetic fields of the separator.\n The calculated data agreed well wit h the experimental data generated in test experiments.\n\nhttps://events.s inp.msu.ru/event/8/contributions/436/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/436/ END:VEVENT BEGIN:VEVENT SUMMARY:(α\,n) and (α\,nγ) yield calculations with a new version of Neu CBOT for low background experiments DTSTART;VALUE=DATE-TIME:20220714T124000Z DTEND;VALUE=DATE-TIME:20220714T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-416@events.sinp.msu.ru DESCRIPTION:Speakers: Maxim Gromov (SINP MSU\, JINR)\nUranium and thorium are distributed in all natural materials surrounding us and\, in particula rly\, in the construction materials of low background detectors. Therefore \, the (α\,n) and (α\,nγ) reactions which occur as a result of α-decay s of U\, Th and their daughters generate intrinsic neutron and gamma backg rounds for the modern ultra-pure neutrino and dark matter detectors. To co nstruct a low background experimental setup\, selection of materials shoul d be done on the basis of assays of the radionuclide relative concentratio ns and calculations of neutrons and gamma yields. The NeuCBOT program (Neu tron Calculator Based On TALYS) can be used for the computation part. We p resent an updated version with new functionality namely use of partial cro ss sections for excited states of the daughter nucleus and calculation of the (α\,nγ) reactions and the respective yields in addition to evaluatio n of the neutron yields in the (α\,n) reactions. Also\, a selection of di fferent databases (TENDL\, JENDL) and a graphical interface were added to the program. We repeated validation comparisons with other (α\,n) data co ming from measurements and calculations. A list of results of the neutron and gamma background estimations for many materials commonly used in low b ackground detector was prepared. Among others the list includes plastics d oped by gadolinium\, structural plastics and construction titanium of vari ous grades.\n\nhttps://events.sinp.msu.ru/event/8/contributions/416/ LOCATION: Физический ф-т\, 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/416/ END:VEVENT BEGIN:VEVENT SUMMARY:ANALYSIS OF THE COMPOSITION OF ISOTOPES IN A SAMPLE OF HIGH-TEMPER ATURE SUPERCONDUCTORS (HTS) AFTER IRRADIATION IN THE RADIATION FIELD OF A LEAD CONVERTER WITH A PROTON BEAM (ЕР = 660 MeV) DTSTART;VALUE=DATE-TIME:20220715T151000Z DTEND;VALUE=DATE-TIME:20220715T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-661@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Stegaylov (JINR)\nCombined talk\n\nANALYSIS OF THE COMPOSITION OF ISOTOPES IN A SAMPLE OF HIGH-TEMPERATURE SUPERCONDU CTORS (HTS) AFTER IRRADIATION IN THE RADIATION FIELD OF A LEAD CONVERTER\n WITH A PROTON BEAM (ЕР = 660 MeV)\n M.S. Novikov\, S.I. Tyutyunniko v\, G.V. Trubnikov\, V.I. Stegailov\, \nV.P.Volnykh\, T.N. Tran.\n JINR\, Dubna\, Russia\, E-mail: stegajlov2013@yandex.ru\, tntoan@io p.vast.vn\nThis report considers one of the stages of work on the developm ent of a series of superconducting magnets operating at temperatures up to 65 K for the possible creation on the basis of a series of accelerators: proton cyclotron (Phasotron) \, medical cyclotron (SC230 with HTS windin g\, 4kA\, 2-T) and etc.\n1. Novikov M.\, Khodzhibagiyan H.\, Tyutyunnikov S.\, Stegailov V.\, Smirnov G.\, Petrova M.\, Kondratiev B. Book of abstra cts and articles of Int. Conf. “Modern Problems of Nuclear Energetics an d Nuclear Technologies”. P. 111. Tashkent\, November (2021).\n\n IO N SOURCE FOR RESEARCH IN NUCLEAR PHYSICS\n V.P. Ovsyannikov1\, A .V. Nefedov2\, A.A. Levin3\, V.I. Stegailov1\, \n S.I. Tyutyunnikov1\, Y.A.Vaganov1\n1Joint Institute for Nucl ear Research\, 141980 Dubna\, Russia\; 2Petersburg Nuclear Physics Institu te\, 188300 Gatchina\, St. Petersburg\, Russia\; 3Ioffe Institute\, 194021 St. Petersburg\, \n E-mail: stegajlov2013@yand ex.ru\, vaganov_ya@jinr.ru\n An ionizer of the MaMFIS type (Main Magnetic Focus Ion Source) [1] produces ions with a high charge in local ion traps of a pulsating electron beam\, where the density can still reach extremely high values (~10 kA/cm2). X-ray radiation from Bi60+ ions was detected. T he peculiarity of the ionizer – a high ion charge and a relatively low n umber of ions\, makes it attractive for experiments with an ion Penning tr ap (MATS and LaSpec: High-precision experiments using ion traps and lasers at FAIR).\n1 . V.P. Ovsyannikov\, A.V. Nefiodov\, A.Yu. Boytsov\, A.Ya. R amsdorf\, V. I. Stegailov\, S.I. Tyutyunnikov\, A.А. Levin // Main magnet \, NIM\, 502 (2021) 23-28.\n\n 152Eu NUCLEUS IN THE FIELD OF LA SER RADIATION 1064nm\n E.V. Barmina1\, A.V. Simakin1\, S.I. Tyutyunn ikov2\, V.I. Stegailov2\, G.A. \n Shafeev1\,3\, I.A. Shcherbakov1\n1Prokhorov General Physics Institute of the Russian Academy of Sciences\, Moscow\, Russia\; 2 Joint Institute for Nuclear Research\, Dubna\, Russia\; 3National Research Nuclear University “MEPhI” \, Moscow\, Russia \nE-mail: stegajlov2013 @yandex.ru\n The experiments were carried out within the framework of the project «Energy and Transmutation of Radioactive Waste». The decay of n uclei under the action of laser radiation with a wavelength of 1064 nm on their aqueous solutions was studied. The well-studied 152Eu nucleus is of particular interest.\n1. E.V. Barmina\, S.I.Tyutyunnikov et al. Quantum El ectronics (2019)\, 49 (8):784.\n\nhttps://events.sinp.msu.ru/event/8/contr ibutions/661/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/661/ END:VEVENT BEGIN:VEVENT SUMMARY:EFFECTS OF LOCAL PARITY NONCONSERVATION IN STRONG INTERACTIONS IN Pb-Pb COLLISIONS AT LHC ENERGY DTSTART;VALUE=DATE-TIME:20220715T141000Z DTEND;VALUE=DATE-TIME:20220715T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-417@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Kovalenko (St. Petersburg State University) \nIt is known that the global conservation of spatial parity is a well-est ablished symmetry of strong interactions. So far\, no pieces of evidence h ave been found for P- and CP-symmetry breaking in strong interactions.\nHo wever\, QCD does not forbid local breaking of parity symmetry due to large topological fluctuations at high temperature with dynamical generation of configurations of nontrivial topological charge. The necessary condition for the observation of these effects is a sufficiently long lifetime of ho t bubble which is accessible in central nucleus-nucleus collisions at LHC. \nIt was shown that the effect of local non-conservation of parity in stro ng interactions can be checked experimentally by the angular analysis of l ow-mass dilepton production in heavy-ion collisions [1-3] and by search of light hadron decays in specific channels which are forbidden by global pa rity conservation [4\,5]. Pariaturly\, the decays of scalar charged a0 mes on into a photon and charged pion and into three charged pions can be refe rred to such processes.\nIn this work\, the effects of local parity non-co nservation have been implemented in the Monte Carlo realisation of the the rmal model. The predictions of the invariant mass distributions of di-meso ns and di-electrons are obtained in Pb-Pb collisions at LHC energy\, takin g into account the experimental resolution of the detectors. It is shown t hat the upgrade of the ALICE detector during the Long Shutdown 2 significa ntly improves the feasibility of these experimental studies at the LHC Run 3 [6].\n\nThe study was funded by the Russian Science Foundation grant No .\n22-22-00493\, https://rscf.ru/project/22-22-00493\n\nhttps://events.sin p.msu.ru/event/8/contributions/417/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/417/ END:VEVENT BEGIN:VEVENT SUMMARY:THERMOLUMINESCENCE TRAPPING PARAMETERS OF IRRADIATED K-FELDSPAR DTSTART;VALUE=DATE-TIME:20220712T124000Z DTEND;VALUE=DATE-TIME:20220712T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-418@events.sinp.msu.ru DESCRIPTION:Speakers: Sahib Mammadov (Institute of Radiation Problems\, Az erbaijan National Academy of Sciences)\nIsothermal decay of TL glow curve of the irradiated K-feldspars has been investigated at an ambient temperat ure. A suggested procedure enables the isolation of peaks at the low-tempe rature region of the TL glow curve. An analysis of the values of the symme try factor suggests that bimolecular mechanisms are responsible for the ki netics of decay processes\, as the values of parameter µ [1] vary around 0.52. The values of the calculated activation energy do not show systemati c correlation with the temperature at the investigated temperature region of TL glow curve. The frequency factor values of the isolated peaks change within the physically meaningful figures (within the order of 109 to 1013 s-1) and in good agreement with the literature [1]. ESR and TL investigati ons revealed that [2]\, when feldspars such as microcline and albite are i rradiated at liquid nitrogen temperature\, both Al-Oh+ and a hydrogen radi cals are formed. As soon as the temperature of the samples rises to room t emperature\, the hydrogen radical eliminates completely and Al-Oh + -Al ce nters appear. Thermal annealing at 1000 ° C leads to the formation of two new hydrogen radicals which are relatively stable even at room temperatur e. It has been suggested that they could act as killers for Al-Oh + -Al ce nters in both feldspars which might be the case in the current situation.\ n\nReferences\n[1] R. Chen\, V. Pagonis\, and J. L. Lawless\, “Evaluated thermoluminescence trapping parameters-What do they really mean?\,” Rad iat. Meas.\, vol. 91\, pp. 21–27\, 2016\, doi: 10.1016/j.radmeas.2016.04 .006.\n[2] T. Hashimoto\, E. Nishiyama\, and Y. Yanagawa\, “Radiation-in duced luminescence and hydrogen radical formation associated with thermal annealing treatments on feldspars\,” J. Radioanal. Nucl. Chem.\, vol. 25 5\, no. 1\, pp. 81–85\, 2003\, doi: 10.1023/A:1022275630127.\n\nhttps:// events.sinp.msu.ru/event/8/contributions/418/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/418/ END:VEVENT BEGIN:VEVENT SUMMARY:ISOMERISM AND DECAY OF ODD-ODD NUCLEI 156\,158\,160Нo NEW ISOMER Т1/2 = (1.8 ± 0.2) min 156Нo DTSTART;VALUE=DATE-TIME:20220713T154000Z DTEND;VALUE=DATE-TIME:20220713T160000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-660@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Stegaylov (JINR)\nCombined talk\n\n ISOMER ISM AND DECAY OF ODD-ODD NUCLEI 156\,158\,160Нo \n NEW ISOMER Т1/2 = (1.8 ± 0.2) min 156Нo \n S.I. Tyutyunnikov1\, V.I. Stegailov1\, V.G. Kalinnikov1S.V. Rozov1\, V.V. Kobets1\, \n S. A. Evseev1\, N.G. Shakun1\, T.N. Tran1\, Yu. A. Vaganov1\, V.P. Volnykh1.\ n A.A. Smirnov2\, A. G. Letov2\, R.L. Zinovyev1.\n1 Joint Institute for Nu clear Research\, Dubna\, Russia\, 2 Institute in Physical and Technical Pr oblems\, Dubna\, Moscow region\, Russia\nE-mail: stegajlov2013@yandex.ru\, vaganov_ya@jinr.ru\n The experiments were carried out within the “Ener gy + Transmutation” project with the 660 MeV protons of the Phasotron ac celerator at JINR.\nThe investigated neutron-deficient odd-odd 156Ho isoto pes were produced in deep spallation reactions using lead targets and 165H o monoisotope samples.\n1.V.G.Kalinnikov et al. // Int. conference on nucl ear physics «Nuclear shells - 50 years». Summaries of reports. 88. Dubna \, Russia\, 1999\n\nCOMPARISON OF THE YIELDS OF 238U FISSION PRODUCTS AFTE R IRRADIATION BY PROTONS (Ep = 660 MeV)\, NEUTRONS (En ≤ 660 MeV) AND EL ECTRONS (Ee = 140 MeV)\n S.I. Tyutyunnikov\, V.I. Stegailov\, S.V. Ro zov\, V.V. Kobets\, I.A. Kryachko\, \nS.A. Evseev\, N.G. Shakun\, T.N. Tra n\, R.L. Zinovyev \nJoint Institute for Nuclear Research\, Dubna\, Russia\ nE-mail: stegajlov2013@yandex.ru.\n The experiments were carried out at J INR accelerators: proton synchrocyclotron (Ep = 660 MeV) and linear electr on accelerator (Ee up to 200 MeV). Lead was used as a converter for the pr oton beam\, and bismuth was used as a converter for the electron beam [1]. \n1.S.I. Tyutyunnikov et al. // Int. Conf. 86-88\, Tashkent\, 23-25 Novem ber\, 2021.\n\nTARGET 209Bi ON AN ELECTRON BEAM AT ITS =180MeV\n S .I. Tyutyunnikov1\, V.I. Stegailov1\, V.V. Kobets1\, B.S. Yuldashev1\,\n F.A. Rasulova1\, S.V. Rozov1\, S.A. Evseev1\, T.N. Tran1\,2\, Yu.G. Te terev1\,\nA. R. Balabekyan1\, J. R. Drnoyan1\, I.A. Kryachko1.\n Joint In stitute for Nuclear Research\, Joliot-Curie 6\, Dubna\, Moscow region\, Ru ssia\, 141980 \n Institute of Physics\, Vietnam Academy of Scienc e and Technology\, Hanoi\, Vietnam\n E-m ail: stegajlov2013@yandex.ru\nExperiments within the framework of the Ener gy and Transmutation project [1] were carried out using the LINAK-200 acce lerator at JINR. 209Bi samples were irradiated in the field of electron br emsstrahlung with Ee =180 MeV. The possibility of studying the decay of sh ort-lived odd-odd nuclei cA=196-202 and obtaining their maximum yields was investigated [2].\n 1. S.I. Tyutyunnikov\, V.I Stegailov et al.\, //NUC LEUS-2020. St-Petersburg\,117-118 (20)\n 2. S.S. Belyshev et al.\, // E ur. Phys. J. A 51\, 67 (2015).\n\nhttps://events.sinp.msu.ru/event/8/contr ibutions/660/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/660/ END:VEVENT BEGIN:VEVENT SUMMARY:UNION OF DISCRETIZED SPECTRA FOR SCATTERING CALCULATIONS DTSTART;VALUE=DATE-TIME:20220715T074000Z DTEND;VALUE=DATE-TIME:20220715T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-420@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Pomerantsev (Institute of nuclear physics\, Moscow State University)\nSolving scattering problems in L2 bases is a pe rspective way which allows to treat problems for continuum nearly on the s ame footing as the discrete spectrum ones. Recently we have suggested a ne w technique for reconstructing scattering amplitude directly from discreti zed spectra of the total and asymptotic Hamiltonians found with variationa l method [1]. It was shown also how the discretized spectra of the Hamilto nians obtained using different bases of the same dimension can be united i nto the common set. Apart other advantages\, such a union of discretized s pectra (UDS) leads to a much denser grid for spectrum discretization witho ut increasing an actual basis dimension. \nIn this study\, the technique b ased on the UDS is generalized to multi-channel problems with degenerated continuum. For practical calculations\, a non-orthogonal Gaussian basis is used which is known to be very convenient for few-body bound-state proble m. It is expected that it is for Gaussian basis sets that the UDS method w ill be effective for calculations in few-body continuum\, as was shown for the single-channel case [1]. As illustrations\, we consider the use of U DS for solving two-body multi-channel scattering problems\, as well as for finding multi-channel resonances. \n\n1. O.A. Rubtsova\, V.N. Pomerantsev \, J. Phys. A 55\, 095301 (2022).\n\nhttps://events.sinp.msu.ru/event/8/co ntributions/420/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/420/ END:VEVENT BEGIN:VEVENT SUMMARY:RELATIVISTIC INVESTIGATION OF LOW NUCLEON SYSTEMS IN THE FORMALISM OF BETE-SALPETER-FADDEEV DTSTART;VALUE=DATE-TIME:20220713T074000Z DTEND;VALUE=DATE-TIME:20220713T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-421@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Yurev (JINR)\nThe relevance of the study of f ew-nucleon systems is motivated by the fact that there is a large amount o f experimental data for the reactions of nucleon scattering on deuterons\, both elastic and inelastic. New corresponding experiments with increased accuracy and at high energies are also planned (JLab\, NICA). Accordingly\ , a theoretical study is required. There are a large number of theoretical studies of three-nucleon systems\, but at low and medium energies. Most o f them are based on the Faddeev equation and its modifications. One of the main problems of modern physics of low-nucleon systems is their theoretic al study at high energies. One of the approaches used in this paper to stu dy few-nucleon systems (primarily three-nucleon nuclei) is the Bethe-Salpe ter-Faddeev (BSF) formalism [1-2]. Within the framework of this approach\, the binding energy of three-nucleon nuclei and their electromagnetic form factors were calculated [3-6]. The calculations were carried out using va rious nucleon-nucleon interaction potentials and various models of nucleon form factors. Comparison of these calculations with calculations within t he framework of other approaches and with experimental data shows that the se studies are in good agreement with experiment. So for the binding energ y of the triton\, the experiment gives the value 8.48 MeV\, the solution o f the nonrelativistic equation - 11.55 MeV\, the calculation using the BSF equation - 8.44 MeV\, which is much closer to the experiment. Based on th is\, one can reasonably assume that this approach will lead to valuable re sults in the case of scattering reactions as well.\n\n\n1.G.Rupp and J. A. Tjon // Phys. Rev. C. 1988. V. 37. P. 1729.\n2.G.Rupp and J. A. Tjon // P hys. Rev. C. 1992. V. 45. P. 2133.\n3.S. G. Bondarenko\, V. V. Burov\, S. A. Yurev // Phys. Part. Nucl. Lett. 2018. V.15. P. 417.\n4.Бондаре нко С.Г.\, Буров В.В.\, Юрьев С.А. О вкладе па рциальных P- и D- состояний в энергию связ и тритона в формализме Бете-Солпитера-Фа ддеева. // ЯДЕРНАЯ ФИЗИКА\, 2019\, том 82\, №1\, с. 1–7. \n5.Bondarenko S.G.\, Burov V.V.\, Yurev S.A. Relativistic ra nk-one separable kernel for helium-3 charge form factor. // Nucl. Phis. A .\, 2020\, V. 1004\, P.122065.\n6.Bondarenko S.G.\, Burov V.V.\, Yurev S. A. Trinucleon form factors with relativistic multirank separable kernels. // Nucl. Phis. A.\, 2021\, V. 1014\, P.122251.\n\nhttps://events.sinp.msu. ru/event/8/contributions/421/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/421/ END:VEVENT BEGIN:VEVENT SUMMARY:DIFFERENCE BETWEEN DISTRIBUTIONS OF INTERMEDIATE AND SLOW NEUTRON FLUX FROM PHOTONEUTRON SOURCE EXIT CHANNEL DTSTART;VALUE=DATE-TIME:20220713T141000Z DTEND;VALUE=DATE-TIME:20220713T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-423@events.sinp.msu.ru DESCRIPTION:Speakers: Stanislav Potashev (Institute for Nuclear Research o f Russian Academy of Sciences)\nDistributions of intermediate and slow neu tron flux from the output collimated channel of the photoneutron source ar e measured. A cadmium filter is used to suppress slow neutrons in the meas urement of intermediate neutrons. A standard helium counter moved during m easurements and the two-coordinate neutron detector based on a thin $^{10} B$ layer combined with a proportional chamber are used [1]. The significan t difference in the experiment is observed in the distribution shape of tw o neutron groups with energies above and below the cadmium boundary. If th e distribution of intermediate neutrons has a symmetrical Gaussian shape\, then the distribution shape of slow neutrons is complex. The possible dif ference of the shapes is discussed.\n\n1. I. V. Meshkov\, S. I. Potash ev\, A. A. Afonin\, Yu. M. Burmistrov\, A. I. Drachev\, S. V. Zuye v\, S. Kh. Karaevsky\, A. A. Kasparov\, E. S. Konobeevski\, S. P.  Kuznetsov\, V. N. Marin\, V. N. Ponomarev\, G. V. Solodukhov\, Bull. Ras. Acad. Sci. Phys. 84\, 382 (2020).\n\nhttps://events.sinp.msu.ru/even t/8/contributions/423/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/423/ END:VEVENT BEGIN:VEVENT SUMMARY:On the stability of spherical nuclei in the inner crust of neutron stars DTSTART;VALUE=DATE-TIME:20220713T145000Z DTEND;VALUE=DATE-TIME:20220713T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-422@events.sinp.msu.ru DESCRIPTION:Speakers: Nikita Zemlyakov ()\nThe inner crust of neutron star s contains nuclei with large neutron excess. Furthermore\, in the deepest layers they can take a substantially non-spherical shape (this region is t ypically referred to as mantle) [1]. The stability of spherical nuclei in inner crust with respect to fission was considered in [2]. The authors app ly the fission instability criterion for spherical nuclei\, derived by Boh r and Wheeler for terrestrial conditions [3]. It was predicted that spheri cal nuclei should lose stability when the ratio of nucleus volume to Wigne r-Seitz cell volume (filling factor) reaches a value of 0.125 [2]\, as a r esult authors suggest that this instability can be a mechanism of transiti on to the mantle. However\, according to our calculations within compressi ble liquid drop model\, the spherical nuclei remain energetically favorabl e for filling factors up to 0.2 [4]. Obviously\, this contradiction have t wo possible solutions: A) complex nuclear structures (e.g.\, [5])\, which stays beyond scope of [4]\, correspond to the true thermodynamic equilibri um for filling factors 0.125-0.2\; B) the fission instability is suppresse d in the inner crust\, as it was argued qualitatively in [6]. Here we demo nstrate that the proposition B) holds true. Similar result was obtained in [7]\, but\, as we argue here\, it was based on incorrect conditions at Wi gner-Seitz cell boundary. \nIn inner crust of a neutron star\, the nuclei are immersed into degenerate electrons\, which provides background charge density of the same order of magnitude as charge density inside the nucleu s. This background creates an electrostatic potential\, which supports sph erical shape of the nuclei. As a result\, spherical nuclei becomes stable with respect to quadrupole deformations for all values of the filling fact or\, if their number density correspond to the optimal value. However\, if the number of atomic nuclei per unit volume is much lower than the equili brium value\, instability may arise and leading to nuclear fission and inc rease of nuclei number density. This phenomenon may be important in the fo rmation of the crust in the early evolutionary stages of neutron stars.\nW ork is supported by Russian Science Foundation (Grant No. 19-12-00133).\n\ n1. N. Chamel N.\, P. Haensel\, Living Rev. Relativ. 11\, 10 (2008).\n2. C hristopher J. Pethick\, David G. Ravenhall\, Annu. Rev. Nucl. Part. Sci. 4 5\, 429 (1995).\n3. N. Bohr\, John A. Wheeler\, Phys. Rev. 56\, 426 (1939) .\n4. Nikita A. Zemlyakov\, Andrey I. Chugunov\, Nikolay. N. Shchechilin\, J. Phys. Conf. Ser. 2103\, 012004 (2021).\n5. William G. Newton\, Sarah C antu\, Shuxi Wang\, Amber Stinson\, Mark Alexander Kaltenborn\, Jirina Rik ovska Stone\, Phys. Rev. C 105\, 025806 (2022).\n6. G. Watanabe\, Progress of Theoretical Physics Supplement 186\, 45 (2010).\n7. S. Kubis\, W. Wojc ik\, arXiv:2102.06675 (2021).\n\nhttps://events.sinp.msu.ru/event/8/contri butions/422/ LOCATION: Физический ф-т\, 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/422/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of the mPSD response in O+Ni collisions at 2 AGeV at the mCB M DTSTART;VALUE=DATE-TIME:20220715T124000Z DTEND;VALUE=DATE-TIME:20220715T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-425@events.sinp.msu.ru DESCRIPTION:Speakers: Nikolay Karpushkin (INR RAS)\nThe PSD forward hadron calorimeter will be used to determine the collision geometry at the CBM e xperiment\, which is under construction at FAIR. To test the CBM subsystem s\, the mCBM experiment was started at the SIS18 beamline of GSI as a part of the FAIR Phase-0 program. One of the PSD modules (mPSD) equipped with the free-streaming readout electronics has been installed and tested at th e mCBM in nucleus-nucleus collisions at interaction rates up to 5 MHz. In this report\, the first experimental results of the mPSD response in the O +Ni collisions at a kinetic energy of 2A GeV are discussed and compared to simulated data of DCM-QGSM-SMM model.\n\nhttps://events.sinp.msu.ru/event /8/contributions/425/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/425/ END:VEVENT BEGIN:VEVENT SUMMARY:SOLITON SOLUTIONS OF HYDRODYNAMIC EQUATIONS IN DESCRIBING COLLISIO NS AND OSCILLATIONS OF ATOMIC NUCLEI DTSTART;VALUE=DATE-TIME:20220714T124000Z DTEND;VALUE=DATE-TIME:20220714T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-426@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Dyachenko (Petersburg State Transport Univ ersity)\nA.T. D’yachenko$^{1\,2}$\, I. A. Mitropolsky$^{2}$\n$^{1}$*Empe ror Alexander I Petersburg State Transport University\, St. Petersburg\, Russia\;* \n$^{2}$*B.P. Konstantinov Petersburg Nuclear Physics\, Institu te\, National Research Center “Kurchatov Institute”\, Gatchina\, Russi a*\n E-mail: dyachenko_a@mail.ru \n\nIn the present work\, the hydrodynami c approach is used and the distribution function of particles in complex s ystems is found. Within the framework of our approach\, we have found an a nalytical solution of the equations of hydrodynamics in the soliton approx imation for the collision of layers in the one-dimensional and two-dimensi onal cases. The prospects of the hydrodynamic approach in physics and the importance of taking into account nonequilibrium processes are noted. The compression stage\, the expansion stage\, and the freeze-out stage are con sidered within the framework of a single formula for layers with energies on the order of ten MeV per nucleon. Such a reduction of solutions of hydr odynamic equations to soliton solutions has not been considered before.\n\ nThe introduction of dispersion into the effective forces and into the pre ssure does not violate the concept of the formation of a hot spot. The int roduction of additional dimensions does not violate this representation. U sually the solution of this system of non-linear partial differential equa tions is found numerically on a computer. Here we develop an approach to t he approximate analytical solution of these equations\, both in the case o f weak nonlinearity\, by reducing them to the Korteweg-de Vries equations\ , and in the case of large-amplitude perturbations\, using soliton-like so lutions. Our generalization to the two-dimensional case leads to the idea of the formation of a rarefied bubble region at the stage of expansion. An d the approach itself is of independent interest and can be used in other areas of physics when calculating the nonlinear dynamics of oscillations o f complex systems. In our works [1-4]\, it was shown that the local thermo dynamic equilibrium in the process of collisions of heavy ions is not esta blished immediately. For this purpose\, in this work\, we use the result o f solving the kinetic equation to find the nucleon distribution function\, which at low energies leads to the equations of nonequilibrium long-range hydrodynamics [1]. The non-equilibrium approach to hydrodynamic equations makes it possible to describe experimental data better than the equation of state corresponding to traditional hydrodynamics\, which assumes the es tablishment of local thermodynamic equilibrium.\n\n1. A.T. D’yachenko\, K.A. Gridnev\, and W. Greiner\, J. Phys. G40\, 085101 (2013). \n2. A.T. D ’yachenko\, I.A. Mitropolsky\, Phys. Atom. Nucl. 83\, 558 (2020).\n3. A .T. D’yachenko\, I.A Mitropolsky \, Bull. Russ. Acad. Sci. Phys. 84\, 391 (2020).\n4. A.T. D’yachenko\, I.A. Mitropolsky\, Bull. Russ. Acad. Sci. Phys. 85 \, 554 (2021).\n\nhttps://events.sinp.msu.ru/event/8/contri butions/426/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/426/ END:VEVENT BEGIN:VEVENT SUMMARY:SS-HORSE APPROACH: FURTHER DEVELOPMENT AND APPLICATION TO THE STUD Y OF LIGHT NUCLEI DTSTART;VALUE=DATE-TIME:20220715T080000Z DTEND;VALUE=DATE-TIME:20220715T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-428@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Mazur (Pacific National University)\nWe ha ve proposed the SS-HORSE approach [1] which makes it possible to calculate scattering phase shifts and S-matrix based on variational results in the oscillator basis. Within SS-HORSE\, one can locate the S-matrix poles to o btain resonance parameters [1] and improve the description of bound states [2].\nWe discuss the results of our recent applications of the SS-HORSE a pproach combined with the No-Core Shell Model (NCSM) to the studies of res onant states in exotic light nuclei. In particular\, we present calculatio ns of resonances in 7He nucleus with realistic NN interactions JISP16 [3] and Daejeon16 [4]. The energies and widths of 7He resonances are calculate d in the channels of elastic scattering of neutron by 6He nucleus in the g round and first excited 2+ states. With Daejeon16 we obtain generally smal ler or the same resonance energies and widths than with JISP16\; however\, the results obtained with these NN interactions agree with each other and with available experimental data on 〖3/2〗_1^-\, 1/2–\, and 5/2– r esonances in 7He. We obtain also wide overlapping resonances 〖3/2〗_2^ -\, 3/2+\, and 5/2+ which make up an experimentally observed resonance of unknown spin-parity at the energy of 6.2 MeV with the width of 4 MeV [5].\ nWe perform also NCSM calculations with Daejeon16 of the 9Li nucleus and u se the SS-HORSE to improve description of its bound state energies and to obtain asymptotic normalization coefficients in these states. The ground s tate energy is well described while the excitation energy of the first exc ited state is overestimated. Resonant 9Li states are examined in the chann els of elastic scattering of neutrons by 8Li in the ground and first excit ed states. We obtain 5/2–\, 3/2–\, and 7/2– resonances with energies and widths in good correspondence with experimentally observed resonances in 9Li which spin-parities are unknown.\n\n A. M. Shirokov\, A. I. Mazur\ , I. A. Mazur\, and J. P. Vary\, Phys. Rev. C 94\, 064320 (2016).\n A. M. Shirokov\, A. I. Mazur\, V. A. Kulikov\, Phys. At. Nucl. 84\, 131 (2021).\ n A. M. Shirokov\, J. P. Vary\, A. I. Mazur\, and T. A. Weber\, Phys. Lett . B 644\, 33 (2007).\n A. M. Shirokov\, I. J. Shin\, Y. Kim\, M. Sosonkina \, P. Maris\, and J. P. Vary\, Phys. Lett. B 761\, 87 (2016).\n D. R. Till ey et al.\, Nucl. Phys. A 708\, 3 (2002).\n\nhttps://events.sinp.msu.ru/ev ent/8/contributions/428/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/428/ END:VEVENT BEGIN:VEVENT SUMMARY:Diphoton Production Rate with the Effect of Chemical Potential in Relativistic Heavy-Ion Collisions DTSTART;VALUE=DATE-TIME:20220715T103000Z DTEND;VALUE=DATE-TIME:20220715T105000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-429@events.sinp.msu.ru DESCRIPTION:Speakers: Yogesh Kumar (Deshbandhu College\, University of Del hi\, Kalkaji\, New Delhi)\nWe investigate the production of diphotons from the hot and dense matter of quark-gluon plasma. The emission of diphotons is one of the most important electromagnetic signatures from quark-gluon plasma\, experiments on which are still in progress at Large Hadron Collid er (LHC) and Relativistic Heavy-Ion Collider (RHIC). For the same purpose\ , we employ a quasi-particle model containing quarks and gluons. Instead o f the earlier used dynamical quark mass\, we take into account the paramte rization factors in temperature-dependent quark mass which rises due to th e interaction of these quarks in extremely hot and dense state of quark-gl uon plasma. In addition\, a finite chemical potential is considered in our phenomenological model. We show the diphoton emission mass spectra in QGP and compare it with the diphoton production from hadronic gas at high tem peratures and finite chemical potential. Our results contribute to further understanding of diphotons which is useful in the study of quark-gluon pl asma and heavy-ion collision experiments at LHC and RHIC.\n\nhttps://event s.sinp.msu.ru/event/8/contributions/429/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/429/ END:VEVENT BEGIN:VEVENT SUMMARY:ESTIMATES OF THE EXPECTED AVERAGE ANNUAL EFFECTIVE DOSE OF NATURAL RADIATION BACKGROUND OF EMPLOYEES IN THE ADMINISTRATIVE BUILDING\, TAKING INTO ACCOUNT THE DISTRIBUTION OF RADON AND ITS DECAY PRODUCTS DTSTART;VALUE=DATE-TIME:20220713T070000Z DTEND;VALUE=DATE-TIME:20220713T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-430@events.sinp.msu.ru DESCRIPTION:Speakers: Yuliya Zaripova (al-Farabi Kazakh National Universit y)\nRadium is the most radiotoxic natural radionuclide\, since small amoun ts of it can accumulate in bone tissue\, damaging the bone marrow and muta ting bone cells [1]. Radon is a decay product of radium and is ubiquitous in the biosphere and present in soils and building materials. Most people are most exposed to radon in residential and industrial buildings. It acco unts for about half of the total human exposure dose from natural sources. Radon can damage the DNA of the respiratory epithelium\, and radon exposu re is suspected to be the cause of lung cancer [2]. Significant health eff ects have been observed among uranium mine workers exposed to high levels of radon. They found a link between exposure to radon and its decay produc ts and an increased risk of developing lung cancer. Despite this\, it rema ins unclear what impact household exposure to radon has on the development of lung cancer.\nThe purpose of this work was to estimate the dose load f rom natural sources of radiation based on monitoring measurements of the t opology of the distribution of radon isotopes in a building located near a tectonic fault. The measurement was carried out using a radon radiometer “Ramon-02” in an administrative building located near a tectonic fault from February 2021 to February 2022 in Almaty. The experiments were carri ed out in rooms with a volume of 128.38 $m^3$ with a ceiling height of 2.6 m and located in the basement\, on the third and fifth floors. During the experiment\, the concentration of radon activity averaged 189.59 $Bq•m^ {-3}$ for the basement\, 23.78 $Bq•m^{-3}$ for the third floor and 35.01 $Bq•m^{-3}$ for the fifth floor. In addition\, fluctuations were observ ed in the range from 59.9 to 568.9 $Bq•m^{-3}$ for the basement\, from 1 2.2 to 33.6 $Bq•m^{-3}$ for the third floor and from 16.2 to 71.8 $Bq• m^{-3}$ for the fifth floor.\nBased on the data obtained\, the doses from radon and its decay products received by students and faculty members who are in classrooms during the day\, month and year were calculated. Calcula tions showed that the annual effective dose in this administrative buildin g (working time-2000 hours/year) ranged from 0.5 mSv/year (for the fifth f loor) to 2.2 mSv/year (for the basement).\nThis research is funded by the Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan (Grant No. AP09058404).\n\n1. M. Jankovic\, D. Todorovic\, and J. Nikolov\, Appl. Radiat. Isot. 70\, 2703 (2012).\n2. R. Hubaux\, K. Enfield\, S. Lam\, W. Lam\, V. Martinez\, Environ. Health. 11\, 89 (2012). \n\nhttps://events.sinp.msu.ru/event/8/contributions/430/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/430/ END:VEVENT BEGIN:VEVENT SUMMARY:DIRECT REACTIONS AND SYNTHESIS OF COLD HEAVY NUCLEI DTSTART;VALUE=DATE-TIME:20220714T120000Z DTEND;VALUE=DATE-TIME:20220714T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-432@events.sinp.msu.ru DESCRIPTION:Speakers: Vadim Bunakov (Peterburg Nuclear Physics Institute ) \nThe cross-section of the superheavy element’s yields produced in col lision of heavy ions is extremely small. One of the main reasons for this smallness comes from the fact that the compound nucleus produced in this c ollision possesses the excitation energy which substantially exceeds its f ission barrier and therefore practically immediately performs fission into the two fragments. Moreover\, even the meager amount of the surviving sup erheavy elements immediately starts neutron evaporation and leaves the reg ion of the most stable superheavy isotopes.\n To minimize the influenc e of these processes one might use direct reactions of alpha-particle knoc k-on by the incident ion and heavy fragment stripping of this ion. In the se reactions a major part of the projectile is transferred to the target a nd forms a superheavy nucleus while alpha particle might carry away the ma jor part (sometimes practically all) of the system’s excitation energy. Very fast alpha-particles created in these processes were first observed b y the FNLR experimental group at JINR back in 1980-ies (see refs. in [1]) practically simultaneously with the theoretical explanation of their resul ts in terms of heavy particle stripping or knock-on reactions (see e.g. [2 ]). It was pointed that registration of alpha-particles with energy close to the kinematical two-body limit $E^{(2)}_{\\alpha\,lim}$ meant that th e new heavy nuclei with Z equal to the sum of the target $Z_T$ and project ile $Z_P$ charges minus 2 was created in the observed reaction. \n The se experiments are renewed now on the U-400 accelerator at FNLR. The use o f the new high resolution magnetic analyzer and detector system allows to measure light particles at the high-energy end of the spectrum whose yield is about $10^{-6}\\div10^{-8}$ of the yield at maximum. The experiments a re performed with the different sets of the projectiles and the targets. P ractically for all those sets alphas were observed close to the two-body l imiting energies $E^{(2)}_{\\alpha\,lim}$. However\, in all the cases of t he possible nuclei production with $Z=(Z_T+Z_P)≥99$ alpha-particles with energies exceeding $E^{(2)}_{\\alpha\,lim}$ were observed. A possibilit y is considered that this indicates a new type of the direct process which might be named “direct fission”. If the binary nuclear system created in the peripherical collision of the projectile and the target closely re sembles the excited heavy nucleus in the process of fission into two asymm etric fission projects\, then the emitted alpha-particle might also carry a part of the Q-energy produced in fission. \n\n1. V.I. Zagrebaev\, Yu.E. Penionzhkevich\, PEPAN 24\, 295 (1993).\n2. V.E. Bunakov\, V.I. Zagrebaev\ , Z. Phys. A 304\, 231 (1982).\n\nhttps://events.sinp.msu.ru/event/8/contr ibutions/432/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/432/ END:VEVENT BEGIN:VEVENT SUMMARY:ROLE OF POLARIZATION IN THE MULTIPLE IONIZATION BY AN INTENSE RADI ATION DTSTART;VALUE=DATE-TIME:20220713T124000Z DTEND;VALUE=DATE-TIME:20220713T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-431@events.sinp.msu.ru DESCRIPTION:Speakers: Elena Gryzlova (Skobeltsyn Institute of Nuclear Phys ics Lomonosov Moscow State University)\nWhen an atom is irradiated by int ense electromagnetic field\, the first photoionization act initiates the v ariety of competitive processes\, such as sequential ionization\, Auger de cay\, radiation decay and other [1]. As a result\, the sample evolves and its evolution depends on radiation parameters: intensity\, pulse duration and polarization. The last is often left behind the scenes\, in particular \, because accounting for the polarization increases number of degrees of freedom enormously. Here we present an approach based on a system of equat ions for statistical tensors [2]\, which are equivalent to a system of rat e equations for population\, but allows to shorten the number of equations noticeably. \nThe approach is applied to investigate the sequential multi ple ionization of krypton at photon energy range 50-80 eV as an illustrati ve example. The calculations are performed for the pulse parameters close to modern free-electron laser facilities.\n\nThis research was funded by t he Russian Foundation for Basic Research (RFBR) under project No. 20-52-12 023 and Russian Ministry of Science and Education grant No. 075-15-2021-13 53. The work of M.D.K. is supported by the Ministry of Science and Higher Education of the Russian Federation (project No. 0818-2020-0005) using res ources of the Shared Services “Data Center of the Far-Eastern Branch of the Russian Academy of Sciences”.\n\n1. E.V. Gryzlova\, M.D. Kiselev\, M .M. Popova\, A.A. Zubekhin\, G. Sansone\, A.N. Grum-Grzhimailo\, MDPI Ato ms\, 8\, 80 (2020).\n2. V.V. Balashov\, A.N. Grum-Grzhimailo. Polarization and Correlation Phenomena in Atomic Collisions. A Practical Theory Course . — NY.: Kluwer Academic / Plenum Publishers (2000).\n\nhttps://events.s inp.msu.ru/event/8/contributions/431/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/431/ END:VEVENT BEGIN:VEVENT SUMMARY:ЗАХВАТ СОЛНЕЧНЫХ НЕЙТРИНО ЯДРАМИ МО ЛИБДЕНА 98 и 100 DTSTART;VALUE=DATE-TIME:20220715T080000Z DTEND;VALUE=DATE-TIME:20220715T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-435@events.sinp.msu.ru DESCRIPTION:Speakers: Алексей Осипенко (Националь ный исследовательский центр “Курчатовс кий Институт”\, Москва\, 123182\, Россия)\nПри расчете сечения взаимодействия нейтрин о с атомными ядрами σ(Eν) необходимо расс читывать структуру зарядово-обменной си ловой функции S(E) ядра\, которая имеет рез онансный характер. В докладе представле ны расчеты сечения захвата солнечных не йтрино σ(Eν) ядра-ми 98\,100Mo. В расчетах испо льзовались экспериментальные данные по силовой функции S(E)\, полученные в зарядо во-обменных реакциях (p\, n) [1] на 98Mo и (3He\, t) [2\, 3] на 100Mo. В рамках самосогласованной т еории конечных ферми-систем проведены р асчеты зарядово-обменной силовой функци и S(E) для этих ядер. Проанализирована рез онансная структура силовой функции S(E) и выделены Гамов-Теллеровский (GTR) [4]\, анал оговый (AR) [5] и пигми резонансы (PR) [6]. Иссл едовалось влияние резонансной структур ы S(E) на рассчитываемое сечение захвата с олнеч-ных нейтрино σ(Eν) и на скорость зах вата солнечных нейтрино R (число поглоще нных нейтрино за единицу времени). Показ ано\, что вклад GTR и PR в σ(Eν) и R для 98Mo суще ственный ~ 40%\, но для 100Mo этот вклад незна чительный из-за влияния солнечных нейтр ино малых энергий\, которых на порядки бо льше. Отмечено\, что захват солнечных ней трино ядром 100Mo является фоновым процесс ом при исследовании двойного бета-распа да этого ядра. \nРабота выполнена при ча стичной финансовой поддержке гранта Отд еления нейтринных процессов и внутренне го гранта НИЦ “Курчатовский институт” ( приказ № 2767 от 28.10.2021).\n\nhttps://events.sinp.msu.ru/even t/8/contributions/435/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/435/ END:VEVENT BEGIN:VEVENT SUMMARY:TO TESTING OF THRESHOLD SILICA AEROGEL CHERENKOV DETECTORS ON COSM IC RAYS DTSTART;VALUE=DATE-TIME:20220712T093500Z DTEND;VALUE=DATE-TIME:20220712T095500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-434@events.sinp.msu.ru DESCRIPTION:Speakers: Leonid Dzhilavyan (Institute for Nuclear Research of the Russian Academy of Sciences)\nAt present\, threshold aerogel Cherenko v detectors based on SiO2 with chosen refractive indices (hereinafter refe rred to as “threshold detectors”) are widely used for studies in physi cs of elementary particles (in particular\, for separating charged pions a nd kaons\, see about it\, e.g.\, in [1] and in references therein). Since the number of Cherenkov photons is small compared to that from scintillato rs\, it is required to test such threshold detectors and measure their sig nificant characteristics on accelerator beams and / or on cosmic rays. In our case\, the detector\, when the entire aerogel block is viewed by a set of photomultiplier tubes (PMTs)\, such characteristics are the distributi on of the number of “activated” PMTs\, the total detection efficiency\ , etc.\nUsually (see\, e.g.\, [1])\, at cosmic ray testing of some thresho ld detector\, several horizontal plastics (viewed by their PMTs) form tele scope around vertical axis. Signals from these detectors are used as a tri gger for testing of the threshold detector placed on the same axis. In [1] \, layers of Pb with additional plastic detectors behind each Pb layer are installed ahead and behind the tested threshold detector to separate part icles with energies higher than thresholds for production of Cherenkov rad iation. However\, because of complicated content of incident cosmic rays\, initial distributions of their energies\, and spreads of ionization losse s\, there are restrictions on definiteness of energies (and velocities) of the registered particles (mostly muons). Moreover\, such testing installa tions are rather bulky and heavy.\nIn the present work instead of layers o f Pb\, we added to trigger detectors the small threshold detector which ma de from the same aerogel as the tested detector\, installed just behind th e tested detector\, viewed by single PMT of the same type as for the teste d threshold detector\, and plays the role of Cherenkov monitor with its to tal detection efficiency close to 100%. This efficiency level is ensured b y the small sizes of the aerogel (5 x 5 x 9 cm3) and of the PMT photocatho de diameter (~5 cm). In our case\, the number of Cherenkov photons in the photocathode sensitivity region (260 nm – 610 nm) generated by a muon in the Cherenkov monitor is about 200. Due to the small sizes of the monitor \, a sufficient number of photons always hit the PMT photocathode for a si gnal to appear even when using PMTs with moderate quantum efficiency.\n\n 1. A.R. Buzykaev. Development of Cherenkov ASHPH counters for the KEDR det ector. The candidate of sciences (physics – mathematics) dissertation. B udker Institute of Nuclear Physics. Novosibirsk. 2017.\n\nhttps://events.s inp.msu.ru/event/8/contributions/434/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/434/ END:VEVENT BEGIN:VEVENT SUMMARY:PHOTONUCLEAR REACTIONS: SOME POSSIBILITIES FOR METHODOLOGICAL IMPR OVEMENT DTSTART;VALUE=DATE-TIME:20220713T124500Z DTEND;VALUE=DATE-TIME:20220713T130500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-437@events.sinp.msu.ru DESCRIPTION:Speakers: Miodrag Krmar (Faculty of Science\, University Novi Sad)\nCross sections for photonuclear reactions in the energy range of gia nt dipole resonance have often been measured. One of the most commonly use d experimental methods was the activation of a selected material in a high -energy bremsstrahlung beam. Considering that there is still a need for re liable results of cross-sectional measurements of photonuclear reactions\, this work will refer to some results aimed at improving the methodology i tself. \nInsufficiently precise knowledge of the energy spectrum and inten sity of the high energy photon beams has lead to the use of comparators\, ie. materials of well known activation properties. With a known geometry o f bremsstrahlung production\, it is possible to obtain a reliable energy d istribution of the emitted photon radiation using some simulation routine. In this case\, the photon beam can be calibrated by measuring the dose. B y the activation of the gold (for which the cross section for (γ\,n) reac tion is well known) and dosimetry measurements\, calibration of photon bea ms of Microtron 25\, in the energy interval from 5 MeV to 25 MeV was perfo rmed. Dosimetry measurements were done using calibrated ionization chamber intended for dosimetry control of photon beams of therapeutic linear acce lerators. \nReconstruction of cross-sections from photoactivation measurem ents has so far been performed using different numerical procedures. In re actor physics\, powerful computer algorisms have been developed to solve s imilar problems – to estimate the shape of the energy differential cross section based on neutron activation measurements. It has been shown [1] t hat a couple of such software packages can be successfully used in photoac tiovation measurements\, in the energy range up to 10 MeV. In this work\, a step further was done and mentioned software codes were tested on the ex ample of gold activation at energies up to 25 MeV. \n \n\n1. Z. Medić\, The European Physical Journal A 57\, 258 (2021)\n\nhttps://events.sinp.msu .ru/event/8/contributions/437/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/437/ END:VEVENT BEGIN:VEVENT SUMMARY:SYNTHESIS OF “LIGHT” HEAVY ELEMENTS UNDER EXPLOSION OF LOW-MAS S NEUTRON STAR DTSTART;VALUE=DATE-TIME:20220713T141000Z DTEND;VALUE=DATE-TIME:20220713T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-438@events.sinp.msu.ru DESCRIPTION:Speakers: Igor Panov (National Research Center “Kurchatov in stitute”)\nObservation of lantanides in the spectrum of kilonova after gamma-burst and gravitational waves registration [1] confirmed theoretica l r-process scenario [2]\, connected with the neutron star merger (NSM) at the end of close binary system evolution.\nAfter numerous investigation s of the neutron star merger process and following registration of NSM it became definitely clear\, that such a scenario is the main one for formati on of majority heavy nuclei in the r-process. But Neutron stars evolutio n in close binaries depends strongly on their masses. Merger process is in vestigated rather well\, but when masses of stars in close binary differs strongly\, merger scenario develops in different way [3] and nucleosynthes is of heavy elements as well [4]. \nIn present report we considered the nucleosynthesis during the explosion of low-mass component in close bi nary\, which lost its mass due to transfer of matter to the heaviest compo nent and blowing up when hydrodynamically unstable configuration was reach ed [3]. \nThe matter of the exploded remnant is expanding and explosive n ucleosynthesis of new elements takes place before density decrease strongl y. Nucleosynthesis mainly occurs in the mantle layers with initial electro n-to-baryon ratio Ye~0.3-0.4. Nucleosynthesis in the considered scenario was calculated along evolutionary trajectories of passive particles\, conn ected with different mantle zones. Based on fulfilled numerical calculatio ns it was shown that synthesis of heavy elements formed in the r-process i s possible\, at least the light part of them. \nThe work was done under fi nancial support of Russian Science Foundation (project №. 21-12-00061).\ n\n1. N.R. Tanvir\, A.J. Levan\, C. González-Fernández\, et al. // Astro physical Journal. 848. \n L27 (2017).\n2. J. Cowan\, C. Sneden\, J. E. Law ler\, et al. // Rev. Mod. Phys. 93. id. 015002. (2021).\n3. S. I. Blinnik ov\, D. K. Nadyozhin\, N. I. Kramarev\, A. V. Yudin // Astronomy Reports. 65. 385. (2021).\n4. I.V. Panov\, A.V. Yudin // Astronomy Letters. 46. 51 8. (2020).\n\nhttps://events.sinp.msu.ru/event/8/contributions/438/ LOCATION: Физический ф-т\, 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/438/ END:VEVENT BEGIN:VEVENT SUMMARY:IMPLEMENTATION OF GLOBAL BETA-DECAY RATES PREDICTIONS TO ASTROPHYS ICAL MODELS DTSTART;VALUE=DATE-TIME:20220714T141000Z DTEND;VALUE=DATE-TIME:20220714T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-439@events.sinp.msu.ru DESCRIPTION:Speakers: Igor Panov (National Research Center “Kurchatov in stitute”)\nIn nucleosynthesis of heavy nuclei\, following neutron star m erger (NSM) [1]\, short-lived not experimentally researched nuclei are inv olved. That is why for their formation modelling the global predictions o f different nuclear parameters are needed. The beta-decay rate is one of t he main important parameter of such short lived nuclei. Heavy nuclei abun dance calculation\, taking into account different nuclear parameters predi ctions\, is in fact theoretical integral experiment\, in which the opportu nities of theoretical models can be compared on the basis of observations and calculations of heavy elements abundances.\nStrong dependence of eleme nt abundances\, produced in NSM scenario on beta-decay rates model [2] hav e shown strong difference in the abundances with different beta-decay ra tes predictions used. In present work we considered the role of beta-decay rates predictions in scenario of low neutron mass explosion\, emerged at the end of close binary evolution of two neutron stars with different mass es [3]. Different beta-decay rates predictions\, such as random phase appr oximation (qRPA) [4]\, proton-neutron relativistic quasiparticle phase app roximation (pn-RQRPA) [5] and finite amplitude method (pnFAM) [5]\, were a pplied to the same nucleosynthesis model [6]\, used earlier for NSM [2]. \ nIt was shown that different global beta-decay rates predictions [4-6]\, a pplied to nucleosynthesis calculations\, leads to formation of realistic s tructure of the abundance curve of chemical elements during weak r-process . And contrary to nucleosynthesis in NSM-scenario\, the formation of heav y elements in the region between first and second peaks weakly depend on b eta-decay model. \nThe work was done under financial support of Russian Na tional Fond (project №. 21-12-00061).\n\n1. J. Cowan\, C. Sneden\, J. E. Lawler\, et al. // Rev. Mod. Phys. 93. id. 015002. (2021).\n2. I.V. Panov // Book of Abstracts. Int. Conf. “NUCLEUS – 2021”. Ed. Kovalenko. P .269.\n3. S. I. Blinnikov\, D. K. Nadyozhin\, N. I. Kramarev\, A. V. Yudin // Astronomy Reports. 65. 385. (2021).\n4. P. Mo¨ller\, J.R. Nix\, and K .-L. Kratz // ADNDT. 66. 131. (1997).\n5. T. Marketin\, L. Huther\, G. Mart´ınez-Pinedo // Phys. Rev. C. 93. Id. 025805. (2016).\n6. E. M. Ne y\, J. Engel\, N. Schunck // Phys. Rev. C. 102. Id. 034326. (2020).\n7. I. V. Panov\, A. V. Yudin // Astronomy Letters. 46. 518. (2020).\n\nhttps:/ /events.sinp.msu.ru/event/8/contributions/439/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/439/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF GENETIC EFFECTS IN BIOASSAYS ARISING FROM RADIATION THERA PY USING A LINEAR ACCELERATOR ELEKTA AXESSE DTSTART;VALUE=DATE-TIME:20220713T072000Z DTEND;VALUE=DATE-TIME:20220713T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-440@events.sinp.msu.ru DESCRIPTION:Speakers: Mirgul Bigeldiyeva (al-Farabi Kazakh National Univer sity)\nCurrently\, gamma radiation is widely used in the treatment of canc er. In particular\, in the treatment of oncological diseases\, the ELEKTA AXESSE medical linear accelerator is used\, which forms beams of gamma ray s with energies of 10 MeV and 15 MeV. Gamma radiation of such energies is highly penetrating and thus capable of being absorbed in a sufficiently la rge volume of biological material. Thus\, in this work\, the aim is to stu dy the appearance of radiation defects from various doses of irradiation w ith gamma rays with energies of 10 MeV and 15 MeV. Such a study is of inte rest in studying the prolonged effect of gamma therapy on body cells.\nThi s paper presents the results on the frequency of mutations induced by beam s of gamma rays with energies of 10 and 15 MeV. The relative exposure dose s were 2Gy\, 5Gy\, 10Gy\, 15Gy\, 20Gy and 30Gy. The electronic accelerator Elekta Axesse of the oncological center “Sunkar” (Almaty) was used as a source of gamma quanta. A study of the genotoxic effects of gamma radia tion was carried out using Drosophilamelanogaster. A series of fly larvae after irradiation were placed in test tubes with a medium for crossing irr adiated adults. Each tube in the tests was subjected to visual analysis af ter the complete departure of the generation to identify mutations. Morpho ses were chosen as the main criterion for assessing the mutagenic and tera togenic effects of gamma radiation on Drosophila. The formation of morphos es is one of the properties of conditional mutations that are not associat ed with the primary structure of DNA and occur in regulatory genes respons ible for the formation of traits of intraspecific similarity. In this case \, the stress factor was gamma radiation\, and the appearance of morphoses demonstrated teratogenic effects or disturbances in the genetic developme nt program. In addition to morphoses\, cases of sterility or a decrease in the fertility of adults were found\, which is evidence of the mutagenic e ffect of irradiation\, since such a phenomenon was not observed in the con trol. The teratogenic properties of gamma radiation were revealed\, expres sed in the appearance of morphoses or asymmetric ugly disorders of the som a morphology. The data obtained indicate that gamma quanta have pronounced mutagenic and teratogenic properties\, i.e. is genotoxic. As a result of the experiments\, the types of induced mutations were determined\, and the significance of genetic effects for various energies of gamma rays was as sessed. \nThis research has been funded by the Science Committee of the Mi nistry of Education and Science of the Republic of Kazakhstan (Grant No. A P09258978).\n\nhttps://events.sinp.msu.ru/event/8/contributions/440/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/440/ END:VEVENT BEGIN:VEVENT SUMMARY:DETERMINATION OF PARAMETERS OF THE MODEL WITH THREE STERILE NEUTRI NOS ON THE BASE OF EXPERIMENT BEST RESULTS DTSTART;VALUE=DATE-TIME:20220713T132000Z DTEND;VALUE=DATE-TIME:20220713T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-443@events.sinp.msu.ru DESCRIPTION:Speakers: Viacheslav Khruschov (Kurchatov Institute)\nIt is ca rried out evaluations of parameters values for the model with three active and three sterile neutrinos [1]\, namely\, mixing parameters between acti ve and sterile neutrinos and sterile neutrinos masses. When doing that\, r esults of the BEST experiment (Baksan Experiment on Sterile Transitions) a re used [2]. The BEST experiment intends to verification of the gallium an omaly at short distances\, that is the deficit of electron neutrinos from radioactive sources. Besides it is taken into account experimental results concerning verification of accelerator [3] and reactor [4\, 5] neutrino a nomalies at short distances\, as well some astrophysical data [6\, 7].\n\n 1. V.V. Khruschov and S.V. Fomichev // Universe 8\, 97 (2022). \n2. V.V. Barinov et al. // arXiv: 2201.07364\, PP. 1-25 (2022).\n3. A.A. Aguilar-A revalo et al. // Phys. Rev. D 103\, 052002 (2021). \n4. I. Alekseev et al. // Phys. Lett. B 787\, 56 (2018). \n5. A.P. Serebrov et al. // Phys. Rev. D 104\, 032003 (2021). \n6. A. Schneider // Phys. Rev. D 98\, 063021 (20 18).\n7. A. Boyarsky et al. // Prog. Part. Nucl. Phys. 104\, 1 (2019).\n\n https://events.sinp.msu.ru/event/8/contributions/443/ LOCATION: Физический ф-т\, ауд 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/443/ END:VEVENT BEGIN:VEVENT SUMMARY:DEVELOPMENT OF FAST NEUTRON THERAPY TPS DTSTART;VALUE=DATE-TIME:20220712T120000Z DTEND;VALUE=DATE-TIME:20220712T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-441@events.sinp.msu.ru DESCRIPTION:Speakers: A. N. Moiseev ()\nNIITFA is participating in develop ment of new fast neutron machine for external beam therapy. It’s based o n C-arm gantry and D-T neutron generator. So overall design is very close to conventional x-ray LINACs and rises similar problems of dose calculatio n. Due to unavailability of commercial treatment planning systems (TPS) fo r fast neutron dose calculation\, development of new TPS has been started recently. The TPS architecture is based on brachytherapy PlanB (RT7 LLC) s ystem [1]. Planning tab graphical user interface can be seen on Figure 1.\ n\n\nFig. 1. Dose planning tab in developing TPS.\n\nDose calculation en gine will be based on pencil beam (first step) and Monte-Carlo simulation (second step). Pencil beam algorithm is currently under implementation in system. Monte-Carlo calculations will use external general-purpose radiati on transport code with dose calculation broker/pipeline\, controlled by TP S server.\nDeveloping TPS also can include numerous modern approaches for dose calculation\, radiobiology models\, dose optimization\, etc. as it Ru ssian-based and open for collaboration. But the main goal is clinic-ready TPS for external beam fast neutron therapy and we believe it will be avail able in close future.\n\n1. Моисеев А.Н. Использовани е изображений разной модальности для ре конструкции позиции аппликатора при бра хитерапии. Трудный пациент. 2022\; 20 (1): 54–57. doi: 10.224412/2074-1005-2022-8-54-57.\n\nhttps://events.sinp.msu.ru/even t/8/contributions/441/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/441/ END:VEVENT BEGIN:VEVENT SUMMARY:NUCLEUS SURFACE TENSION AND ITS MICROSCOPIC RESONANCE DESCRIPTION DTSTART;VALUE=DATE-TIME:20220714T130000Z DTEND;VALUE=DATE-TIME:20220714T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-445@events.sinp.msu.ru DESCRIPTION:Speakers: Aleksey Dolgodvorov (IBRAE)\nDeviations of nuclear p roperties from shell model predictions are very sensitive to value of nucl ear surface tension [1]. Although the quantitative estimation of these dev iations is not yet possible\, a level of deviation is indicated by the val ues of the nuclear surface tension coefficient σ. These deviations are mi nimal for nuclei with high values of the coefficient σ. The nuclei of iro n isotopes with even numbers of neutrons are characterized by relatively s mall values of σ (see Fig. 1). The maximum value of σ for the 54Fe nucle us is 9 times less than the surface tension of the 48Ca nucleus [1]. The c alculation of resonant excited states of nuclei with small values of σ wi thin the framework of the traditional many-particle shell model (MPSM) [2] does not lead to an adequate description of the energy distribution of th e excitation probabilities. Agreement with experiment can be achieved usin g the method “particle-core coupling shell model” (PCCSM) [3]\, where experimental values of spectroscopic factors are taken into account. For t he 54Fe nucleus\, this method has led to a satisfactory theoretical descri ption of the GDR [4]. The role of "magic numbers" in the formation of the value of σ is shown in Fig. 1: the surface tension of the 54Fe nucleus is more than 2 times higher than its values for other stable iron isotopes. The influence of proton “magic numbers” is clearly seen from the compa rison of Ni and Fe surface tension coefficients (Fig. 1).\n\n \nFig. 1. Va lues of surface tension coefficients for Fe and Ni isotopes.\n\n1. N.G. Go ncharova\, Physics of Particles and Nuclei 48\, 90 (2017).\n2. G.E. Brown\ , M. Bolsterly\, Phys. Rev. Lett. 3\, 472 (1959).\n3. N.G. Goncharova\, Ph ys. Atom. Nucl. 72\, 1745 (2009).\n4. N.G. Goncharova\, A.P. Dolgodvorov\, Phys.At.Nucl. 77\, 200 (2014).\n\nhttps://events.sinp.msu.ru/event/8/cont ributions/445/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/445/ END:VEVENT BEGIN:VEVENT SUMMARY:Radio detection of neutrinos in Antarctica DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-444@events.sinp.msu.ru DESCRIPTION:Speakers: Maria Mikhailova ()\nThe radio detection of UHE neu trinos is currently being actively developed. Radio experiments carried ou t in Antarctica (ARIANNA\, ARA\, ANITA balloon experiment) are able to sca n huge volumes of ice in search of neutrinos. \nThe scale of the experimen ts is growing - work is underway to deploy an array of radio detectors in the Greenland Ice Sheet\, it is planned to build a new radio detector at the South Pole (IceCube Gen-2 radio) and launch a balloon experiment PUEO. \nThe detection method is based on the Askaryan effect predicted by a Sov iet physicist in 1962. Due to this effect\, UHE neutrino-induced cascades in ice radiates in the radio range. And the radio transparency of polar i ce makes it possible to cover large volumes of the target with sparse arr ay of radio antennas. \n In this work\, the abilities of AURA experiment t o detect UHE neutrino were explored.\nThe AURA is a pilot radio experiment whose antennas are deployed in IceCube holes in polar ice at a depth of 2 00-1500 m. The experiment was carried out from 2006 to 2011 to study the b ackground conditions at the South Pole. Its distinguishing feature is the presence of deeply located antennas. \nIn the work it is shown which radi o noise sources are present at the South Pole and how they affect on the e fficiency of neutrino detection. The relationship between settings of the trigger system and the thermal noise level recorded by the equipment has b een studied. And the possibilities of the AURA experiment for detecting UH E neutrinos are presented here.\n\nhttps://events.sinp.msu.ru/event/8/cont ributions/444/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/444/ END:VEVENT BEGIN:VEVENT SUMMARY:Source velocity in collisions of 2.1 GeV protons with gold target DTSTART;VALUE=DATE-TIME:20220714T140900Z DTEND;VALUE=DATE-TIME:20220714T142900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-486@events.sinp.msu.ru DESCRIPTION:Speakers: Sergej Avdeyev (JINR)\nOne way of evaluating the deg ree of equilibration in reaction\, as well as determine the average source velocity\, is through invariant cross section analysis as a function of l ongitudinal and transverse velocity. \nIn the present work the source char acteristics of multifragmentation are investigated for the p + Au collisio ns at 2.1 GeV. Beam of 2.1 GeV protons were obtained from the Dubna superc onducting accelerator NUCLOTRON. Invariant cross sections of carbon fragme nts from target spectator were measured with the 4π device FAZA. \n It wa s found to a good approximation that the data for a given invariant cross section are isotropic\; i.e.\, they can be described by a circle with fixe d locus\, corresponding to a single average source velocity. Mean source v elocity of target spectator is 0.0032 ± 0.0003 in units of light speed. T he research was supported by the Russian Foundation for Basic Research\, G rant No. 19-02-00499.\n\nhttps://events.sinp.msu.ru/event/8/contributions/ 486/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/486/ END:VEVENT BEGIN:VEVENT SUMMARY:Radiation resistance of SiC detectors under neutron irradiation DTSTART;VALUE=DATE-TIME:20220713T080000Z DTEND;VALUE=DATE-TIME:20220713T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-446@events.sinp.msu.ru DESCRIPTION:Speakers: S. Evseev (DLNP JINR)\nThe results of an investigati on of silicon carbide (SiC) detectors when irradiated with neutrons are pr esented. SiC detectors were manufactured on the basis of the epitaxial lay er of 4H-SiC n-type conductivity. The thickness of n-type epitaxial layer was 50 µm. Schottky barrier contacts with a diameter of 3.0 mm were made by vacuum evaporation of a double layer of Ni and Au 10 and 30 nm thick. T he initial energy resolution of detectors was < 25 keV for α-particles. \ nThe radiation resistance of SiC detectors was studied experimentally by a nalyzing their characteristics before and after fast neutron irradiation w ith integral fluxes of 5.1x10^13\, 5.4x10^14\, 3.4x10^15 n/cm2. The irradi ation was carried out at the pulse reactor IBR-2M (JINR\, Dubna). The α-s ource 226Ra (E = 4.8\, 5.5\, 6.0\, 7.7 MeV) that was used for calibration and control of spectrometric characteristics of SiC detectors. \nIt is sho wn that after neutron irradiation\, significant degradation was observed: the peaks from the alpha particles shifted towards smaller channels and be came much wider\; with an increase in the flux\, the energy resolution deg rades by two\, ten and twenty times\; the charge collection efficiency (CC E) decreased from 100% to 96%\, 70% and 1% (operating voltage 350 V) at t he neutron irradiation fluxes of 5.1x10^13\, 5.4x10^14\, 3.4x10^15 n/cm2\, respectively.\n\nhttps://events.sinp.msu.ru/event/8/contributions/446/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/446/ END:VEVENT BEGIN:VEVENT SUMMARY:Experimental manifestation of the strong nuclear interaction in th e optical spectra of solids DTSTART;VALUE=DATE-TIME:20220712T103000Z DTEND;VALUE=DATE-TIME:20220712T105000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-449@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Plekhanov (Fonoriton Sci. Lab.)\nExperiment al manifestation of the strong nuclear interaction in the optical spectra of solids\n V.G. Plekhanov\n Fonoriton Sci. Lab.\, Garon Ltd\, Talli nn 11413\, Estonia\, vgplekhanov@gmail.com \n The primary task amongs t other nuclear physics fundamental tasks is experimental measuring of nuc lear force interacting between nucleons (protons and neutrons) and their d ependence on nucleons' distance in between. The discovery of the neutron by Chadwick in 1932 may be viewed as the birth of the strong nuclear inte raction In 1935 Yukawa have tried to develop a theory of nuclear forces. T he most important feature Yukawa^{'} forces is they have a small range (~1 0⁻¹⁵ m). However\, up to present time phenomenological Yukawa potenti al can not be directly verified experimentally. We should remind that the strong nuclear interaction - the heart of Quantum Chromodynamics (QCD) whi ch is the part of the Standard Model (SM). According to SM the nuclear for ce is a result of the strong force binding quarks to form protons and neut rons [1]. Residual part of it holds protons and neutrons together to form nuclei. There are common place in nuclear and high energy physics that th e strong force does not act on leptons.\n Our report is devoted to stud y the strong nuclear interaction via measuring the low - temperature (2 K) photoluminescence spectra of LiH (Eg = 4.992 eV) (without strong interact ion in hydrogen nucleus) and LiD (Eg = 5.095 eV) (with strong interaction in deuterium nucleus) single crystals. \n The uniqueness of the LiH a nd LiD compounds is that they differ in only one neutron\, i.e. lithium io ns\, electron and proton are the same for them and\, therefore they have t he same gravitational\, weak and electromagnetic interactions. The additio ns of a neutron to hydrogen nucleus\, generates according to Yukawa\, a st rong interaction between a proton and a neutron\, the effect on which on e lectron is manifested in the isotope shift (0.103 eV) of the zero - phonon photoluminescence line of free excitons in LiD crystals (see Fig 1 in Ref .2.). The experimental observation of isotope shift (0.103 eV) of the phon onless free exciton emission line in LiD crystals is a direct manifestatio n of the long - range nuclear strong interactions on the leptons [3]. Mor eover\, we have measured the dependence of the nuclear strong force on the distance between nucleons in deuterium nucleus.\n 1. D.H. Perkins\, In troduction to High Energy Physics (CUP\, Cambridge\, 2000).\n 2. V.G. P lekhanov\, Phys. - Usp. 62\, 947 (2019)\n 3. V.G. Plekhanov\, Atomic En ergy 131\, 123 (1921) (in Russian).\n\nhttps://events.sinp.msu.ru/event/8/ contributions/449/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/449/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF SORPTION PROPERTIES OF MODIFIED STRUCTURAL MATERIALS FOR NUCLEAR POWER ON GAMMA-QUANTUM BEAMS OF LINEAR ACCELERATOR DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-448@events.sinp.msu.ru DESCRIPTION:Speakers: Yuliya Zaripova (al-Farabi Kazakh National Universit y)\nThe energy crisis is currently one of the pressing global problems. An d one of the solutions to this problem is the use of a highly efficient re source - nuclear energy. The use and development of this resource is const rained by the safety factor in the operation of nuclear reactors. Today\, concrete is widely used as a material for radiation protection: it is chea p\, it is easy to form structures of various shapes\, and it is a good abs orber [1]. Radiation shielding concrete is a composite with special filler s. It is widely used for shielding against gamma rays and neutrons due to its good shielding properties and is the biological barrier of choice in n uclear reactors and other nuclear installations. However\, despite this\, the process of radiation damage to cement\, which is part of concrete\, an d the effect of different concentrations of chemical elements on its radia tion resistance are still insufficiently studied. Therefore\, the study of materials used to provide radiation protection is an actual direction.\nI n this work\, studies were carried out on three samples of cement with dif ferent contents of $B_4C$\, $Fe_3O_4$ and $BaSO_4$. To study the coefficie nts of linear absorption of gamma quanta in the samples under study\, an E lekta Axesse electron accelerator with gamma quanta energies of 10 and 15 MeV was used as a source of gamma quanta. The samples were made at Cairo U niversity (Egypt). To obtain the linear attenuation coefficients of the sa mples\, the technique developed earlier by the authors was used [2]. \nAs a result\, experimental linear attenuation coefficients for samples with v arious impurities were obtained\, and it was shown that cement with a high $BaSO_4$ content is a good absorber of 10 and 15 MeV gamma quanta. Howeve r\, such samples must be studied for radiation resistance from neutron rad iation.\nThis research is funded by the Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan (Grant No. AP090584 04).\n\n1. A. Makarious\, I. Bashter\, E. Abdo\, M. Azim\, and W. Kansouh\ , Ann. Nucl. Energy 23(3)\, 195 (1996).\n2. Y. Zaripova\, T. Gladkikh\, M. Bigeldiyeva\, V. Dyachkov\, and A. Yushkov\, Reports of NAS RK 5\, 126 (2 021).\n\nhttps://events.sinp.msu.ru/event/8/contributions/448/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/448/ END:VEVENT BEGIN:VEVENT SUMMARY:Diffuseness of nucleon density distribution and double-folding nuc leus-nucleus potential DTSTART;VALUE=DATE-TIME:20220714T130000Z DTEND;VALUE=DATE-TIME:20220714T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-450@events.sinp.msu.ru DESCRIPTION:Speakers: Makar Simonov (Lomonosov MSU\, Flerov Laboratory of Nuclear Reactions JINR)\nDescription of the internuclear interaction is th e one of the most important tasks in analysis of various nuclear reactions . In particular\, the position and height of the barrier determined by Cou lomb and nuclear interactions should be estimated in order to evaluate gen eral properties of fusion of heavy nuclei.\nThe calculations of fusion bar riers are carried out within the double-folding approach assuming the diab atic regime of collisions of heavy ions with $Z\, N > 9$. Nucleon density distributions are required to calculate the double-folding potential [1\, 2]. Thus\, radial parameters of nucleon densities given in the Fermi-distr ibution form are approximated on the basis of *rms* charge radii [3]. Acco rding to experimental data [4]\, diffuseness parameters of nucleon distrib utions are not clearly correlated with $Z\, N\, A$ of corresponding nucleu s and have significant uncertainties. Therefore\, the diffuseness values w ere fitted to reproduce the Bass barriers [5] for spherical nuclei (fig. 1 ). Potential barriers obtained in such a way can be used as estimation of fusion barriers in heavy ion reactions.\n\n![Fig. 1. Fit of the duffusenes s values obtained from comparison with the Bass barrier.][1]\n\n 1. V. Zag rebaev et al. (2007). Phys. Part. Nucl.\, 38\, 4\, 469 (2007).\n 2. M. V. Simonov\, A. V. Karpov\, T. Yu. Tretyakova\, Proceedings of LXXI Internat ional conference “Nucleus-2021”\, 307 (2021).\n 3. I. Angeli\, K. P. M arinova\, At. Data Nucl. Data Tables. 99\, 69 (2013).\n 4. H. De Vries\, C . W. De Jager\, C. De Vries\, At. Data Nucl. Data Tables. 36\, 495 (1987). \n 5. R. Bass\, Phys. Rev. Lett. 39\, 265\, (1977).\n\n\n [1]: https://dr ive.google.com/file/d/1wm71roEMdXpsRphmP6ZB_mMFgK3H7PFl/view?usp=sharing\n \nhttps://events.sinp.msu.ru/event/8/contributions/450/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/450/ END:VEVENT BEGIN:VEVENT SUMMARY:THE MSU SINP CDFE IN THE NUCLEAR REACTION DATA CENTRES NETWORK DTSTART;VALUE=DATE-TIME:20220714T144900Z DTEND;VALUE=DATE-TIME:20220714T150900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-451@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Varlamov (Lomonosov Moscow State University \, Skobeltsyn Institute of Nuclear Physics)\nAbout 50 years ago internatio nal community started the job in compilation\, computer processing and dis semination of nuclear data essential to the development and application of nuclear sciences and technologies. The scope of the IAEA Network of Nucle ar Reaction Data Centres (NRDC) includes nuclear data for both various app lications\, as well as for basic nuclear science. The important preparativ e and communication activities between 14 nuclear data centres from Austri a\, China\, France\, Hungary\, India\, Japan\, Korea\, France\, Russia\, U kraine\, USA are organized under the auspices o the IAEA. Each of the cent res provides coverage for different geographical zones and/or specific typ es of nuclear data\, thus together providing a complete service for users worldwide. 3 Russia centres participate now - Center of Nuclear Physics Da ta (CNPD)\, All Russian Scientific Research Institute of Experimental Phys ics\, Sarov\; Russian Nuclear Data Center (CJD)\, Institute of Physics and Power Engineering\, Obninsk\; Centre for Photonuclear Experiments Data (C entr Dannykh Fotoyadernykh Eksperimentov\, CDFE)\, Moscow State University Skobeltsyn Institute of Nuclear Physics\, Moscow. The NRDC Network coordi nated by the IAEA Nuclear Data Section successfully collaborates in the ma intenance and development of the digital EXFOR library\, the most comprehe nsive nuclear reaction data collection [1-3]. More than 20000 experimental studies of neutron\, charged-particle\, and photon induced reaction data are accumulated [4]. In addition to the EXFOR library many other nuclear d atabases (DB) convenient for using in scientific research and educational processes are available through Internet.\nThe MSU SINP CDFE is responsibl e for providing photonuclear data for various organizations in Russia\, pr imarily scientific and educational institutes and organization of Russian Academy of Science. All data are organized as relational DB on the CDFE We b-site (http://cdfe.sinp.msu.ru) [5] with powerful and flexible Search Eng ines. That gives to one the possibility for effective surfing the data nee ded for new nuclear reaction and nuclear structure physics researches.\n\n 1. IAEA Database “Experimental Nuclear Reaction Data (EXFOR)”\, http:/ /www-nds.iaea.org/exfor.\n2. USA National Nuclear Data Center Database “ Nuclear reaction experimental data EXFOR”\, http://www.nndc.bnl.gov/exfo r/exfor00.htm.\n3. CDFE “Nuclear Reaction Database (EXFOR)”\, http://c dfe.sinp.msu.ru/exfor/index.php.\n4. N. Otuka et al.\, Nucl. Dat. Sheets 1 20\, 272 (2014).\n5. S. Yu.Komarov et al.\, Program and Abstracts of Inter national Conference on Nuclear Data for Science and Technology\, New York\ , USA\, 04 – 08 March 2013. p. 253.\n\nhttps://events.sinp.msu.ru/event/ 8/contributions/451/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/451/ END:VEVENT BEGIN:VEVENT SUMMARY:Influence of nuclear surface diffuseness on halo structure of Zr i sotopes near the neutron drip line DTSTART;VALUE=DATE-TIME:20220714T143500Z DTEND;VALUE=DATE-TIME:20220714T145500Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-453@events.sinp.msu.ru DESCRIPTION:Speakers: Olga Bespalova ()\nMore pronounced increase in the n eutron surface diffuseness with increasing of neutron excess is expected f or the nuclei far from the β-stability valley [1\,2] in comparison with t he stable ones. Earlier\, the halo and giant halo were predicted for the Z r isotopes near the neutron drip line by the relativistic Hartree-Bogoliub ov theory [3]. We studied the halo structure of these isotopes within the dispersive optical model. Influence of the diffuseness parameters of the v olume and surface components of the dispersive optical model potential on the root-mean-square radii of Zr isotopes and its halo states\, and their population was investigated. The influence of the increase in the diffusen ess *aHF* of the Hartree-Fock component\, for example\, was appeared to be double: root-mean-square radius *rnlj* of 3p halo states decreased\, but the number of neutrons *nnlj* in these states increased (see Fig. 1 ![ente r image description here][1]). It was shown also that the number of neutro ns in halo states differed significantly from the number of neutrons in th e halo region where there was no spatial correlation of neutrons in halo s tates with the core of the nucleus. \n\nFig. 1. Single-particle energy Enl j(left)\, root-mean-square radius rnlj (middle) and number of neutrons nnl j in the single-particle states near the Fermi energy (right) in 130Zr.\n\ n1. G. A. Lalazissis\, D. Vretenar\, W. Pöschl\, E. Ring. Nucl. Phys. A 6 32\, 363 (1998).\n2. Ning Wang\, Min Liu\, Xizhen Wu\, Jie Meng. Phys. Let t. B 734\, 215 (2014).\n3. J. Meng\, P. Ring. Phys. Rev. Lett. 80\, 460 (1 998).\n\n\n [1]: https://disk.yandex.ru/i/mToRRm0O8le9Dw\n\nhttps://event s.sinp.msu.ru/event/8/contributions/453/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/453/ END:VEVENT BEGIN:VEVENT SUMMARY:MULTIPARAMETRIC REGISTRATION SYSTEMS IN RADIOCHEMISTRY DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-465@events.sinp.msu.ru DESCRIPTION:Speakers: Konstantin Ershov (ПИЯФ)\nThis paper discusses a spects of the application of multiparametric ionizing radiation detection systems (MPSR) for the analysis of the composition of liquid radiochemical samples. Liquid active samples may occur\, for example\, in experiments o r production processes of hydrometallurgy or activation analysis.\nCurrent ly\, MPSR are not widely used in radiochemistry\, but such a systems are s uccessfully applied in nuclear physics\, high-energy physics\, biology\, m edicine. This is due not only to the high cost of such systems\, but also for historical reasons. According to the authors\, using of MPSR is becomi ng relevant for online monitoring at hydrometallurgical plants of a new ge neration\, in experiments on radiochemical stands\, activation analysis.\n By MPSR we mean multi-detector registration systems in which signals comin g from detectors are either continuously recorded on a data carrier and/or processed online. An important feature of such systems is the availabilit y of temporary information. Devices called digitizers have become widespre ad for such systems\, which record the signal coming from the detectors in the form of a continuous time series to the storage device\, then process ed offline. Another common method is to work in “list mode” for each c hannel\, when the signal is pre-processed by classical methods of nuclear electronics and then only the signal amplitude and timestamp are recorded. In both cases\, the signal can be represented as a set of amplitude spect ra\, as well as various coincidences. The paper proposes to use for these purposes the following set of scintillation detectors: beta-\, two gamma-\ , X-ray detector\, as well as an immersion silicon alpha detector. Mathema tical data processing is supposed to be supplemented by digital filters. T he paper discusses the decay schemes of various radionuclides\, appropriat e choice of detectors\, the choice of methods of registration and mathemat ical processing. The exposure times estimated in trial experiments.\n\nhtt ps://events.sinp.msu.ru/event/8/contributions/465/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/465/ END:VEVENT BEGIN:VEVENT SUMMARY:APPLICATION OF LITHIUM-DOPED CRYSTALS IN TASKS OF SEPARATE DETECTI ON OF GAMMA-RAYS AND NEUTRONS DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-455@events.sinp.msu.ru DESCRIPTION:Speakers: Ilya Lagutskiy (ATOMTEX SPE)\nModern trends of radia tion control instruments development require creation of highly efficient high autonomy detection devices with minimal dimensions\, which allows rad iation safety services to perform inspection of various objects in the mos t efficient way.\nCurrently\, 3He counters are used in most of the neutron detection devices. An alternative is the use of lithium-doped crystal sci ntillators\, which combine the functions of gamma spectrometry and neutron detection. The main representatives of detectors of this class are CLYC [ Cs2LiYCl6(Ce)]\, NaIL [NaI (Li+Tl)] and CLLB [Cs2LiLaBr6(Ce)].\nThe ATOMTE X SPE is developing probes for separate detection of neutron and gamma rad iation on the basis of CLYC and NaI(Li+Tl) detectors. According to the res ults of the studies\, NaI(Li+Tl) scintillator is more promising for use in the absence of strict requirements to the resolution capability due to si mpler discrimination of radiation types and lower cost of the detector.\nT he use of the CLYC scintillator is associated with the need to solve the p roblem of optimal light collection\, because this scintillator has light o utput twice less than NaI(Li+Tl) and its emission spectrum is shifted to U V region. Also the process of classification of the registered radiation i s more complicated and requires the use of digital signal processing metho ds.\nThe report presents the analysis of pulses of CLYC\, NaI(Li+Tl) detec tors obtained from the photomultiplier tube and considers methods of pulse processing for separate detection of gamma-radiation and neutrons on thes e scintillators. The prospects of application of separate gamma-radiation and neutron detection units for various tasks are considered.\n\nhttps://e vents.sinp.msu.ru/event/8/contributions/455/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/455/ END:VEVENT BEGIN:VEVENT SUMMARY:THE OPERATIONAL METHOD FOR CALCULATING THE BIOLOGICAL PROTECTION O F LOW-ENERGY HEAVY ION ACCELERATORS DTSTART;VALUE=DATE-TIME:20220715T124000Z DTEND;VALUE=DATE-TIME:20220715T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-457@events.sinp.msu.ru DESCRIPTION:Speakers: Raushan Kabytayeva ()\nSimple analytical formulas fo r operational evaluation of the yield and angular distribution of neutrons \, which are necessary for calculating the biological protection of heavy ion accelerators with energies from 1 to 6 MeV/nucleon\, are presented. Ac tivities on creation of the new multipurpose isochronous cyclotron DC-140 [1] at the FLNR\, JINR became the reason for the development of a method f or operational preliminary calculation. The results of the calculation wer e compared with the results of calculations using the LIZE++ [2] and FLUKA [3] programs and with the available experimental data in the literature.\n As a result of the comparisons\, it can be argued that the proposed method for calculating the yield and angular distribution of neutrons from thick targets can be used to quickly assess the necessary biological protection of heavy ion accelerators under construction and reconstruction with ener gies from 1 to 6 MeV/nucleon. The deviation of the results of these calcul ations from the more accurate ones does not exceed a factor of two\, which is comparable with the results of deviations in the calculation of biolog ical shielding associated with a certain variety of spectra of produced ne utrons and deviations in the protective properties of the materials used o r their thickness.\n\nhttps://events.sinp.msu.ru/event/8/contributions/457 / LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/457/ END:VEVENT BEGIN:VEVENT SUMMARY:Detailed study of radioactive decay properties of nobelium isotope s with α\, β\, γ-spectroscopy method DTSTART;VALUE=DATE-TIME:20220712T072000Z DTEND;VALUE=DATE-TIME:20220712T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-459@events.sinp.msu.ru DESCRIPTION:Speakers: Mereigul Tezekbayeva (Joint Institute for Nuclear Re searches\, Flerov Laboratory of Nuclear Reactions)\nAt FLNR JINR\, experim ents are aimed to investigate the radioactive decay properties ($\\alpha$\ , $\\beta$\, $\\gamma$-spectroscopy) and the cross sections measurements o f transfermium elements\, synthesized in complete fusion reaction of accel erated heavy ion beam with target nuclei\, with subsequent evaporation of several light particles at the kinematic separator SHELS [1\,2]. A number of experiments were devoted to the study of the radioactive decay properti es of Nobelium isotopes are produced as an evaporation result of two or th ree neutrons by a compound nucleus in the reaction of $^{48}$Ca beam with $^{204\,206\,208}$Pb targets. These Nobelium isotopes have sufficiently hi gh production cross-sections\, which allow us collect good statistics for studying decay properties by methods of alpha\, beta\, gamma spectroscopy. Nobelium isotopes are interesting in how the radioactive decay properties change passing through the closed subshell N = 152\, thereby could be obt ain data are necessary to understanding how the heavy elements properties behave passing through the subshell N = 162.\n\n1. A. V. Yeremin\, et al.\ , Phys. Part. Nucl. Lett. 12\, 43 (2015).\n2. A. V. Yeremin\, et al.\, Phy s. Part. Nucl. Lett. 12\, 35 (2015).\n\nhttps://events.sinp.msu.ru/event/8 /contributions/459/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/459/ END:VEVENT BEGIN:VEVENT SUMMARY:LUE-200 ACCELERATOR – THE DRIVER OF THE PULSE RESONANCE NEUTRON SOURCE IREN DTSTART;VALUE=DATE-TIME:20220715T091000Z DTEND;VALUE=DATE-TIME:20220715T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-458@events.sinp.msu.ru DESCRIPTION:Speakers: Anatoly Sumbaev (Joint Institute for Nuclear Researc h)\nThe linear electron accelerator LUE-200 was designed and built at the Joint Institute for Nuclear Research (Dubna) as a driver for a booster-typ e neutron source with a multiplying target - an active zone with an integr al neutron yield of ⁓ 1014 s-1\, which determines the energy and power o f the accelerated particle beam. The accelerator was designed and put into operation in stages. In 2009 - 2010 the physical start-up of the IREN ins tallation was carried out as part of the first stage of the accelerator wi th a non-multiplying target (electron gun\, one accelerating section\, one klystron\, one modulator). The first stage of the accelerator worked for the experiment for several thousand hours at a cycle frequency of 10 - 25 Hz with a beam current of 1.5 - 2.0 A\, a duration of ⁓ 100 ns and an en ergy of 30 - 35 MeV (spectrum maximum). In 2016\, the second accelerating section was installed and launched (+ the 2nd klystron with a modulator). As a result of the launch of the second stage of the accelerator (2016–2 019)\, an increase in the energy of accelerated electrons up to 70 MeV was achieved\, with an average electron beam power of up to 0.6 kW at a cycle frequency of 25–50 Hz.\nThe problems of achieving the design parameters of the accelerator and the possibility of the accelerator developing as a neutron source driver without a breeding core are considered. The plans f or the development of the accelerator provide for an increase in the cycli city of the accelerator to 100 - 120 Hz and an increase in the beam power to 1.5 kW\, which will make it possible to obtain an integral neutron yiel d from a non-multiplying W target up to 3∙1012 s-1.\n\nhttps://events.si np.msu.ru/event/8/contributions/458/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/458/ END:VEVENT BEGIN:VEVENT SUMMARY:Muon Capture on the Deuteron. The MuSun Experiment DTSTART;VALUE=DATE-TIME:20220715T142900Z DTEND;VALUE=DATE-TIME:20220715T144900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-462@events.sinp.msu.ru DESCRIPTION:Speakers: N.I. Voropaev (Petersburg Nuclear Physics Institute named by B.P.Konstantinov of NRC «Kurchatov Institute»)\nThis article pr esent the result of the MuSun experiment\, precise measurement of muon cap ture rate by deuteron (Ld). The rate of the reaction µd(F=1/2)→vµ+n+ n is measured with precision 1%. That accuracy makes it possible to fix the low-energy constant (LEC) in an effective EFT field theory in a model-ind ependent way. After that this makes it possible to reliably calculate the cross sections of weak reactions in two−nucleon processes\, for example\ , such as pp synthesis going to the sun p+p→d+e+ve or neutrino scatterin g on deuteron ve+d→p+p+e-.\nThe experiment performed on a muon beam of t he Swiss Meson Factory (Paule Scherrer Institute\, PSI). The experimental technique is based on measuring the rate of muon loss in deuterium by regi stration Michel electrons. The basis of the setup was a time-projection ch amber (TPC)\, an active target filled with deuterium. Decay electrons were detected with a geometric efficiency of 70% by two external cylindrical p roportional chambers and scintillation counters. The measurements were car ried out at a deuterium temperature of 31 K and a pressure of 5 bar. For a dditional isotopic purification of deuterium\, a cryogenic separation was used\, which allows to reduce the concentration by protium to the level of 10-4. In this case\, the correction of Ld associated with the pd synthesi s is less than 1 Hz. To reduce the amount of heavy elements in deuterium\, a cryogenic circulating purification system was developed. This allow to reduce the presence of impurities in deuterium to 0.5•10-9. Measurement of such a low concentration of impurities was carried out by chromatograph ic method with cryogenic concentration. In order to reliably determine the Ld correction associated with muon capture on impurities\, which is 99% n itrogen\, an additional experiment was carried out on a muon beam with the addition of 2•10-6 nitrogen. As a result\, the muon transfer rate to ni trogen LdN= 2.2(1)•1011 Hz was measured and corresponding correction to Ld was determined as 1.5 Hz.\nAt the end of MuSun experiment 1.2•1010 us eful events were collected\, events with the muon stopping in the sensitiv e area of the TPC with registration of the decay electron. The statistical error of the measurement is 4 Hz. The main systematic correction to the µd capture rate connects with muon losses in the dd fusion reaction µdd →3Heµ+n. It is reliably calculated as 8.0(1)Hz.\n\nhttps://events.sinp. msu.ru/event/8/contributions/462/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/462/ END:VEVENT BEGIN:VEVENT SUMMARY:MEASUREMENT OF RADON DECAYS WITH THE LVD-SETUP FOR NEUTRINO SEARCH ING DTSTART;VALUE=DATE-TIME:20220714T130000Z DTEND;VALUE=DATE-TIME:20220714T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-461@events.sinp.msu.ru DESCRIPTION:Speakers: Natalia Agafonova (Institute for Nuclear Research o f RAS)\nThe Large Volume Detector (LVD)\, located at the Gran Sasso Low Ba ckground Laboratory in Italy\, is built to search for neutrinos from stell ar core collapses in our galaxy. [1\, 2]. \nThe peculiarity of the search for rare events requires close attention to the background of the experime nt\, such as the natural radioactivity of the rock and detector materials [3] and particles of the interaction of cosmic ray muons underground [4]. \nThe LVD detector measures gamma quanta from the decay of radon daughter nuclei.\nRadon is the main source of the variable background component in the underground hall\, whose concentration variations are composed of seve ral components. Long-term\, seasonal variations are associated with change s in rock moisture [5]. The daily variations of radon are affected by air mixing due to the opening of the gates in the hall [6]. We convincingly sh ow the connection between the change in the concentration of radon nuclei in the experimental hall and the change in the count rate of background pu lses from gamma rays in the detector.\nWe also point out the existence of another source of radon change\, this is seismic activity. An increase in radon emanation a few days before an earthquake poses the problem of the p ossibility of predicting seismic events. We present some typical LVD time series patterns during major earthquakes in Italy in recent years.\n\n1. G . Bari\, M. Bazile\, G. Bruni et al. Nucl. Instrum. Meth. Phys. Res. A. 26 4\, 5 (1988).\n2. N. Y. Agafonova et al. (LVD Collaboration). Astrophys. J our. 802\, 47 (2015)\n3. C. Bucci et al. Eur. Phys. J. A 41\, 155 (2009).\ n4. R. Persiani\, PhD Thesis\, Bologna: Univ. Bologna\, (2011).\n5. N.Yu. Agafonova et al. Bulletin of the Russian Academy of Sciences: Physics. 83\ , 614 (2019).\n6. N.Yu. Agafonova\, V.A. Alekseev\, E.A. Dobrynina\, et al .\, Preprint of the Inst. Nucl. Res.\, Russ. Acad. Sci.\, Moscow\, no. 107 1/2001 (2001).\n\nhttps://events.sinp.msu.ru/event/8/contributions/461/ LOCATION: Физический ф-т\, 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/461/ END:VEVENT BEGIN:VEVENT SUMMARY:Search of periodical and aperiodical variations of nucleus decay parameters DTSTART;VALUE=DATE-TIME:20220714T151000Z DTEND;VALUE=DATE-TIME:20220714T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-460@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Mayburov (Lebedev Institute of Physics)\nPoss ible temporal variations of nucleus decay parameters were studied extensi vely in the last years\, their observation can be the signal of unknown physical effects. Several experiments reported the annual and daily decay rate oscillations in alpha and beta-decays of some radioactive nuclides at the level of .05 % [1\,2]. Also\, correlation of Mn-54 e-capture deca y rate with electromagnetic solar activity was reported [1]. BSTU - PhIAN collaboration studies decay rate variations in inverse beta-decay (e-cap ture) of Fe-55 isotope. In this process K-shell electron absorbed by nucl ei and electron neutrino emitted\; it accompanied by X-ray with energy 5\, 9 or 6\,4 KeV which in our set-up detected by cooled Si-Pin detectors. Mea surements of decay rate performed in 2016 -2021 \, demonstrate that togeth er with observed Fe-55 decay exponent with life-time 1004 days\, oscillat ion period 29.5 +/- 1.5 days corresponding to moon month is found with am plitude (.22 +/- .04)% \; \npossible model of such decay rate deviations considered in [3\,4].\n Possible influence of electromagnetic so lar activity was studied during 2015 – 2020 for Fe-55 decay rate\, simul taneously with Co-60 beta-decay rate measured by germanium detector in Nov osibirsk INF at the distance 2800 km from Moscow [5]. The deviations of s imilar form and size from exponential decay low at the average level (.5 5 +/-.004)% were detected in both experiments during October- December 201 8. Supposedly\, they can be related to solar activity minimum started in the beginning of 2019. In addition\, six decay rate dips of the order 1 % of decay rate and with duration from 40 to 208 hours were found. It is sh own that their occurrence correlate with x-ray solar flare events with sig nificant reliability\, existence of such correlation can have important pr actical applications [4]. SOLARIS project of our collaboration plans to pe rform simultaneous measurements of Fe-55\, Co-60 decay parameters on Inter national Space Station and Earth lab. \n to study their correlations with X-ray solar activity.\n\n\n 1. E. Fischbach et al. \, Rev. Space Sci . 145\, 285 (2009)\; Astrop. Phys. 59\,47 (2014)\n\n 2. E. Alekseev e t al. \, Phys. Part. Nucl. 47\, 1803 (2016)\; ibid. 49\, 557 (2018) \n\n 3. S. Mayburov Int. J. Theor. Phys. 60\, 630 (2021) \n\n 4. S. May burov Phys. Part. Nucl. 51\, 458 (2020)\n \n 5. S. Bogachev et al . J. Phys.: Conf. Series 1690\, 012028-012035 (2020)\n\nhttps://events.s inp.msu.ru/event/8/contributions/460/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/460/ END:VEVENT BEGIN:VEVENT SUMMARY:INFLUENCE OF NUCLEON PAIRS ON THE NUCLEAR SURFACE TENSION DTSTART;VALUE=DATE-TIME:20220714T132000Z DTEND;VALUE=DATE-TIME:20220714T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-464@events.sinp.msu.ru DESCRIPTION:Speakers: Natalia Goncharova (MSU)\nThe calculation of the sur face tension coefficients σ of even-even nuclei [1] showed the decisive r ole of shell effects in the formation of the value of σ. The addition of neutron pairs to the "magic" nucleus leads\, as a rule\, to a decrease in σ (Fig. 1). Low values of σ change little upon addition of neutron pairs until a neutron-closed subshell is obtained\, when the surface tension sh arply increases (Fig.1a).\n \nFig.1a. Surface tension of Ca\, Ar and Ti nu clei Fig.1b. Surface tension of C and O \nThe role of proton pairs in the formatio n of surface tension is more controversial. Adding a pair of protons to a closed protons shell leads to a significant decrease in σ [σ(18O)/σ(20N e)≈4.5\; σ(48Ca)/σ(50Ti)≈5.5]. The surface tension of the nucleus\, as a rule\, increases if the addition of a pair of protons completes the s hell to closeness [σ(40Ca)/σ(38Ar)≈3.3\;]\, however\, the addition of a pair of protons to the 14C nucleus leads to a decrease in σ (Fig. 1b)\, although in this case a closed proton subshell is formed. The relatively low value of σ for the 16O nucleus is the source of the formation of a co mplex structure of giant resonance in this nucleus\, which has not been ad equately explained in terms of the many-particle shell model [2\,3]. The i nfluence of the shell structure on the surface tension of heavy stable nuc lei is clearly manifested in mercury and lead isotopes: the surface tensio n coefficient σ more than triples when a pair of protons (3s)2 is added t o the 204Hg nucleus and the "magic" number of protons 82 is formed. Comple ting the construction of the lead’s neutron shell up to N=126 leads to a n even sharper increase in σ and the achievement of the maximum of this c oefficient among all nuclei: σ(126Pb)≈34MeV/fm2.\n\n1. N.G. Goncharova\ , Phys. Part. Nucl. 50\, 532 (2019).\n2. G.E. Brown\, M. Bolsterly\, Phys. Rev. Lett. 3\, 472 (1959). \n3. N.G. Goncharova\, Phys. At. Nucl. 85\,75 (2022).\n\nhttps://events.sinp.msu.ru/event/8/contributions/464/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/464/ END:VEVENT BEGIN:VEVENT SUMMARY:The multiplicity of neutrons of spontaneous fission of 250No obtai ned in complete fusion reactions with heavy ions at the SHELS separator. DTSTART;VALUE=DATE-TIME:20220712T074000Z DTEND;VALUE=DATE-TIME:20220712T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-463@events.sinp.msu.ru DESCRIPTION:Speakers: Bekzat Sailaubekov (Joint Institute for Nuclear Rese arch\, Dubna\, Russia)\nFor more than 20 years\, experiments on the synthe sis and study of the properties of radioactive decay of short-lived isotop es of transuranic elements have been conducted at the Flerov Nuclear React ions Laboratory of JINR. The reactions of complete fusion of accelerated m ulticharged ions with target nuclei heavier than lead were mainly used. In these experiments\, experimental installations with kinematic separation of recoil nuclei from background products are most often used. In these in stallations (separators)\, the separation in space of recoil nuclei\, inco ming ions and products of multi-nucleon transfer reactions occurs in elect ric and magnetic fields due to the difference in their trajectories caused by the difference in their ionic charge and energy (velocity) distributio ns.\nThis work describes the kinematic separator SHELS [1]\, which is used for the synthesis and study of the properties of heavy nuclei. A separato r detection system consisting of a time-of-flight system\, a focal semicon ductor detector and a SFiNx detection system is described [2]. The new det ection system consists of an assembly of multi-strip two-sided Si detector s\, around which 116 proportional neutron counters filled with 3He are pla ced. The detector system was used in the experiment to study the character istics of spontaneous fission of the isotope 250No\, in which data on the yields of neutrons of spontaneous fission were compared with previously pu blished results. \nPreliminary data were obtained during processing. The n eutron detection efficiency was (54.7 ± 0.1)%. The measured average numbe r of neutrons in the 250No fission act was (2.32 ± 0.07)\, which\, taking into account the efficiency of the neutron detector\, gives the value of the average number of neutrons ν = (4.24 ± 0.13).\n\n1. Popeko A.G.\, Ye remin A.V.\, Malyshev O.N.\, Chepigin V.I.\, Isaev A.V.\, Popov Yu.A.\, Sv irikhin A.I.\, Haushild K.\, Lopez-Martens A.\, Rezynkina K.\, Dorvaux O. Separator for Heavy ELement Spectroscopy – velocity filter SHELS. // Nuc l. Instrum. Methods Phys. Res. B. 2016. 376. P. 140–143.\n2. A.V. Isaev et al. The SFiNx Detector System. // Physics of Particles and Nuclei Lette rs 19.1 (2022)\, pp. 37–45.\n\nhttps://events.sinp.msu.ru/event/8/contri butions/463/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/463/ END:VEVENT BEGIN:VEVENT SUMMARY:Role of string fusion mechanism in fluctuation studies DTSTART;VALUE=DATE-TIME:20220715T145000Z DTEND;VALUE=DATE-TIME:20220715T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-467@events.sinp.msu.ru DESCRIPTION:Speakers: Daria Prokhorova (St.Petersburg State University)\nI n the search for the critical point of strongly interacting matter\, one o f the key tools is to look at event-by-event fluctuations of different eve nt observables expecting their non-monotonic behavior. It is crucial for t he experiments to eliminate a possible influence of so-called trivial volu me fluctuations on the physics observables of interest. This may be done e .g. by the accurate centrality selection used and/or by means of special m easures using different estimators of initial conditions. It is also possi ble to apply some theoretical approaches in estimation of all the possible sources of unwanted fluctuations. In this report we compare results obtai ned in two phenomenological models of particle production. The first one i s the Monte-Carlo model of interacting quark-gluon strings of finite lengt h in rapidity space [1]. It takes into account\, event-by-event\, the stri ng fusion phenomenon caused by string overlap in the transverse plane. It is this process of fusion that modifies string fragmentation characteristi cs and changes the mean values of multiplicities and transverse momenta of produced particles. The second one is the modified multi-pomeron exchange model [2\,3] that takes into account\, in the effective way\, the process of string fusion emerging with the increase of collision energy. Using th ese models and Monte-Carlo event generators\, the calculations were done f or the strongly intensive quantities [4] Δ[PT\,N] and Σ[PT\,N] and the c ombinants [5] of multiplicity distribution. Results are discussed.\n \nAc knowledgements. This research has been conducted with financial support fr om St. Petersburg State University (project No 93025435).\n\n1. D.S. Prokh orova and V.N. Kovalenko\, Phys. Part. Nucl. 51\, 323 (2020).\n2. N. Armes to\, D.A. Derkach and G.A. Feofilov\, Phys. Atom. Nucl. 71\, 2087 (2008).\ n3. E.V. Andronov and V.N. Kovalenko\, Theor. Math. Phys. 200 3\, 1282 (20 19).\n4. M. Gorenstein and M. Gazdzicki\, Phys. Rev. C 84\, 014904 (2011). \n5. M. Rybczynski\, G. Wilk and Z. Wlodarczyk\, Phys. Rev. D 99 9\, 09404 5 (2019).\n\nhttps://events.sinp.msu.ru/event/8/contributions/467/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/467/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of muon catalyzed 3Hed Fusion DTSTART;VALUE=DATE-TIME:20220712T123000Z DTEND;VALUE=DATE-TIME:20220712T125000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-468@events.sinp.msu.ru DESCRIPTION:Speakers: I. Solovyev (NRC Kurchatov Institute PNPI)\nThe ther monuclear reaction $d({}^3\\!He\,\\alpha)p$ is a very rich playground to s tudy various phenomena in different fields of science. Astrophysicists use data of the cross section to build and tune a theory of primordial nucleo synthesis. Most nuclear reactions data doesn’t contain energy dependenci es below several keV\, the most interesting region for astrophysics.\nFrom a practical point of view\, the reaction is extremely efficient in energy generation. While producing 18.3 MeV worth of energy\, one of the highest energy outputs among nuclear reactions\, it doesn’t contain nor produce radioactive elements. It makes possible the construction of the safest an d efficient thermonuclear reactor.\nThe use of muons expands studies even more. It makes possible to investigate the reaction at extremely low energ y (several eV) that has never been done before. Bombarding a gas mixture o f $^3\\!He$ and $D_2$ ($H\\!D$) with energetic muons results in the format ion of exotic muonic molecules such as $^3\\!He\\mu d$. It was theoretical ly shown [1] that $^3\\!Hed$ fusion can occur in this formation.\nThe expe riment\, aimed to investigate muon catalyzed $^3\\!Hed$ fusion\, is being carried out at PSI (Switzerland) by the PNPI group (Gatchina\, Russia). It enables the study of processes involving mesomolecules.\nThe experimental setup\, adopted from the previous experiment MuSun [2]\, includes the cry ogenic TPC\, muon beam detectors\, kicker and detection system of electron s coming from muon decays. The kicker allows muons to enter the fiducial v olume only one by one. The data collected enables to determine a muon stop position\, detect tracks of electrons created via the muon decay as well as tracks of fusion products. Information about the energy of each particl e is also obtained.\nThe formation rates of the $d\\mu d$ and $^3\\!He\\mu d$ molecules\, the probability of the muon transfer from $\\mu d^*$ to $\ \mu d$\, the upper limit for the “effective” $^3\\!He\\mu d$ fusion de cay rate\, yields of $^3\\!He\\mu d$ molecules have been obtained and pres ented.\n\n1. M.P. Faifman and L.I. Men'shikov\, Hyperfine Interact. 119\, 127 (1999).\n2. V.A. Ganzha et al.\, PNPI Main Scientific Activities HEPD 2007–2012\, 106 (2013).\n\nhttps://events.sinp.msu.ru/event/8/contributi ons/468/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/468/ END:VEVENT BEGIN:VEVENT SUMMARY:PROPERTIES OF GAMOW-TELLER AND CHARGE-EXCHANGE GIANT SPIN-MONOPOLE RESONANCES IN MEDIUM-HEAVY CLOSED-SHELL PARENT NUCLEI: A SEMIMICROSCOPIC DESCRIPTION DTSTART;VALUE=DATE-TIME:20220714T124000Z DTEND;VALUE=DATE-TIME:20220714T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-469@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Bondarenko (Shubnikov Institute of Crystall ography\, Federal Research Center “Crystallography and Photonics\,” Ru ssian Academy of Sciences\, Moscow\, Russia)\nProperties of giant resonanc es (GRs) associated with high-energy particle-hole (p-h) excitations in me dium-heavy nuclei are described by a number of characteristics and paramet ers. Main characteristics include the energy-averaged strength function an d “projected” transition density\, both related to an appropriated sin gle-particle external field (probing operator)\, and strength functions of direct one-nucleon decay. Being considered in a wide excitation-energy in tervals\, these characteristics determine\, in particular\, the GR peak en ergy\, fractions of the respective sum rule\, probabilities of direct one- nucleon decay. \nIn this work\, we present a theoretical study of the main properties of Gamow-Teller and charge-exchange (isovector) giant spin-mon opole resonances (GTR and $IVGSMR^{(∓)}$\, respectively) in a few medium -heavy closed-shell parent nuclei. The study is performed within the semi- microscopic p-h dispersive optical model (PHDOM)\, in which the main relax ation modes of p-h states associated with GRs are together taken into acco unt. Actually\, PHDOM is a microscopically-based extension of the standard and nonstandard versions of the continuum-random-phase-approximation on t aking (phenomenologically and in average over the energy) the spreading ef fect into account. Formulation of PHDOM and its implementations to describ ing a few of isoscalar and isovector GRs in medium-heavy closed-shell nucl ei can be found in Ref. [1] and references therein. Within the model. a re alistic partially self-consistent phenomenological mean field and Landau-M igdal p-h interaction are used as input quantities.\nIn this work\, PHDOM is adopted and then implemented to describing main properties of GTR and $ IVGSMR^{(∓)}$ in the $^{48}Ca$\, $^{90}Zr$\, $^{132}Sn$\, and $^{208}Pb$ parent nuclei. Calculation results are compared with available experiment al data. Most of the results can be found in Ref [2].\n\n \n\n 1. M.L. Gor elik\, S. Shlomo\, B.A. Tulupov\, and M.H. Urin\, Phys. Rev. C103\, 034302 (2021).\n \n 2. V.I. Bondarenko\, M.H.Urin\, http://arxiv.org/abs/2201.02 965.\n\nhttps://events.sinp.msu.ru/event/8/contributions/469/ LOCATION: Физический ф-т\, 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/469/ END:VEVENT BEGIN:VEVENT SUMMARY:Variants of intensive antineutrino sources on the base of 8Li isot ope DTSTART;VALUE=DATE-TIME:20220714T153000Z DTEND;VALUE=DATE-TIME:20220714T155000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-471@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Lyashuk (Institute for Nuclear Research (IN R) of the Russian Academy of Sciences)\nThe winning properties combination of the β--decayed 8Li isotope (short $T {_{1/2}}$= 0.84 s\, hard and kno wn antineutrino spectrum (with maximum at ~13 MeV and average energy = 6.5 MeV) and availability of lithium are the undoubted base to consider 8Li as the very perspective isotope for construction of the antineutrino sourc e as the powerful instrument for different neutrino experiments. In spite of the high antineutrino flux from nuclear reactors the spectrum are chara cterized with significant errors ((4-6)% -precision at energy up to ~6 MeV ) caused by unknown schemes of decays\, time variations\, presence of the spent nuclear fuel\, that put together cause an unsolved puzzles in preci sion and interpretation of neutrino oscillation results [1].\n The const ruction of the intensive antineutrino source is possible in different sche mes basing as on the nuclear reactor (as neutron source for (n\,γ)-activa tion of purified 7Li) as on the tandem scheme of the accelerator with neut ron producing target plus lithium blanket (neutron converter) irradiated b y $^{7}{\\rm Li}(n\,\\gamma)^{8} {\\rm Li}$ activation [2]. In the source realized in transport regime (first variant) an activated 7Li is pumped in the close cycle through the active zone of the reactor\; further (in сyc le) it is delivered close to the neutrino detector. The scheme really allo ws to decrease the total spectrum errors in order of values [3]. Another f eature of this concept is high count rate ensured in the compact (about cu bic meter) neutrino detector – ~10e+4 $(\\bar \\nu{_e} \, p)$-events ($m ^{-3}$$day^{-1}$GW$^{-1}$) [4]. \n In the other perspective realization t he proton beam strike into the heavy-element-target and produces the signi ficant neutron yield for the lithium blanket irradiation. The scheme is co nsidered for energies up to ~600 MeV for different heavy targets (W\, Pb\, Vi\, Ta). The density of 8Li creation is simulated in details that allowe d to propose an effective blanket scheme with central lithium containing v olume enclosed by carbon (acting as an effective neutron reflector) and ou ter thick water layer for diminish the neutron escape. The analysis of 8Li distribution in the blanket allows to propose an alternative approach of tandem schemes based on developed compact accelerators with proton energy about several tens of MeV that opens another important possibility - to co nstruct a small-volume-antineutrino-source (of short dimension ~70 cm) tha t is exclusively important for search of sterile neutrinos in case of $\\D elta m^2 \\ge 1\\: {\\text{эВ}}^2$ [ 5].\n\n1. C. Giunti\, Y.F. Li\, C .A. Ternes\, and Z. Xin. arXiv:2110.06820 (2022).\n2. V.I. Lyashuk & Yu.S. Lutostansky. Bull. Russ. Acad. Sci. Phys. 79\, 431–436 (2015). [https: //doi.org/10.3103/S106287381504022X][1]\n3. V.I. Lyashuk. Results Phys. 7\ , 1212 (2017). [https://doi.org/10.1016/j.rinp.2017.03.025][2].\n4. V.I. L yashuk. JHEP06 (2019)135. [DOI: 10.1007/JHEP06(2019)135][3]\n5. J. Kopp\, M. Maltoni and T. Schwetz\, Phys. Rev. Lett. 107\, 091801 (2011). DOI:[htt ps://doi.org/10.1103/PhysRevLett.107.091801][4]\n\n\n [1]: https://doi.or g/10.3103/S106287381504022X\n [2]: https://doi.org/10.1016/j.rinp.2017.03 .025\n [3]: https://doi.org/10.1007/JHEP06(2019)135\n [4]: https://doi.o rg/10.1103/PhysRevLett.107.091801\n\nhttps://events.sinp.msu.ru/event/8/co ntributions/471/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/471/ END:VEVENT BEGIN:VEVENT SUMMARY:Advantages and Disadvantages of Timepix detector for SPECT/CT DTSTART;VALUE=DATE-TIME:20220715T070000Z DTEND;VALUE=DATE-TIME:20220715T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-470@events.sinp.msu.ru DESCRIPTION:Speakers: Vladislav Rozhkov (JINR)\nThe report presents the ad vantages and disadvantages of using semiconductor detectors in diagnostic nuclear medicine. The possibilities of using joint SPECT/CT studies using hybrid pixel detectors of the Timepix family are demonstrated.\n\nhttps:// events.sinp.msu.ru/event/8/contributions/470/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/470/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of neutral pion production in Ag+Ag collisions at 1.23 AGeV beam energy at the HADES experiment DTSTART;VALUE=DATE-TIME:20220712T141000Z DTEND;VALUE=DATE-TIME:20220712T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-487@events.sinp.msu.ru DESCRIPTION:Speakers: Arseniy Shabanov ()\nThe High Acceptance DiElectron Spectrometer (HADES) is a fixed target experiment which explores the prope rties of hadronic matter in collisions of pions\, protons and ions with va rious nuclei at beam energies 1-2 A GeV. It operates at the SIS18 accelera tor in GSI\, Darmstadt. Due to the newly built electromagnetic calorimeter ECal the HADES has a possibility to measure yield of the neutral pions vi a π0 → γγ decay. These measurements play an important role in reducin g the systematic uncertainties in study of dilepton spectra.\nThe analized data were collected in Ag + Ag collisions at the beam energy 1.23 A GeV. The events with centrality 0-30 % were chosen for the analysis. The proced ure of measurement of π0 yield and its uncertainty are discussed in this talk. The calibration of the ECal detector\, acceptance and efficiency cor rections and extrapolation of the pt and y spectra will be discussed.\n\nh ttps://events.sinp.msu.ru/event/8/contributions/487/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/487/ END:VEVENT BEGIN:VEVENT SUMMARY:VERIFICATION PHANTOMS FOR DYNAMIC RADIOTHERAPY PLANS DTSTART;VALUE=DATE-TIME:20220712T145000Z DTEND;VALUE=DATE-TIME:20220712T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-474@events.sinp.msu.ru DESCRIPTION:Speakers: M.N. Petkevich ()\nCurrently\, verification phantoms for the verification of radiation therapy plans represents a rectangular or cylindrical solid body made of water-equivalent material with a rectang ular hole for inserting a matrix detector. The most famous examples are th e MULTICube phantom [1]\, which is a rectangular solid body made of plasti c water (water equivalent with an error of ≤ 0.5%)\, which has several c onfigurations\, which allows you to install the MatriXX matrix detector [2 ] in the phantom body in a position corresponding to the region of interes t\; ArcCheck phantom [3]\, which is a cylindrical solid body made of polym ethyl methacrylate with a built-in spiral grid of detectors\, and having a cavity for inserts made of tissue-equivalent materials\; Octavius 4D phan tom which is a solid cylindrical body made of polystyrene (water equivalen t with an error of ≤ 2%) with a rectangular hole in the center of the cy lindrical phantom for inserting a matrix detector.\nThe analysis showed th at a significant drawback of these devices is that their use for the verif ication of the patient's treatment plan does not give an accurate idea of the absolute dose values in the phantom volume (patient's body)\, since th ey use the cross-calibration coefficient and thus neglect a number of quan tities that can affect the delivered absorbed dose.\nThe authors consider it expedient to develop a method for verifying radiation therapy plans\, w hich makes it possible to improve the quality of verification of radiation therapy plans through the use of a cross-calibration coefficient determin ed taking into account the value of the radiation output of a medical line ar accelerator immediately at the time of this procedure.\n\n1. Access mod e: http://test.scanditronix-wellhoefer.com/MULTICube.1362.0.html\n2. Acces s mode: https://www.iba-dosimetry.com/product/matrixx-universal-detector-a rray/ \n3. Access mode: https://www.sunnuclear.com/products/arccheck\n\nht tps://events.sinp.msu.ru/event/8/contributions/474/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/474/ END:VEVENT BEGIN:VEVENT SUMMARY:APPLICATION OF TRITIUM LABEL FOR THE DETECTION OF NANODIAMOND FILM S ON THE SURFACE OF COLLAGEN TISSUE DTSTART;VALUE=DATE-TIME:20220713T141000Z DTEND;VALUE=DATE-TIME:20220713T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-473@events.sinp.msu.ru DESCRIPTION:Speakers: Tianyi Shen (Lomonosov Moscow State University)\nBio prosthetic heart valves based on bovine pericardium are widely used in the field of cardiac surgery worldwide. The main component of bovine pericard ium is collagen tissue that is treated with chemical agents to prevent cal cification and preserve the elastic properties of the biological tissue. I n the present study we tried to improve the mechanical properties of biolo gical tissue by application of additional nanodiamond-based coating and ch aracterized the coating by means of radiotracer method.\nNanodiamonds show high potential application as a drug carrier because of functionally deve loped surface as well as high specific surface. Moreover\, it is possible to introduce tritium label directly bonded with diamond surface by means o f tritium thermal activation method. In the present research we used triti um labeled nanodiamonds to measure its mass on the surface of collagen tis sue and nanodiamond-based coating stability in vivo. \nThe other problem o f xenogenic heart valve prostheses is the development of disease caused by microorganisms. From this view point nanodiamonds can be consider as a ca rrier of drugs of prologue action. Here we used amikacin and levofloxacin\ , which were labeled with tritium for determination of its adsorption and desorption from nanodiamond surface in vitro and in vivo. Peculiarities of nanodiamond-antibiotic adsorption complexes formation and its application onto collagen tissue will be discussed in the presentation.\nTo prevent c alcification process collagen tissue must be coated with biopolymer like c hitosan. Tritium labeled chitosan was used for coating characterization in the experiments in vitro and in vivo.\nThus\, preparation and characteriz ation of nanodiamond-antibiotic-chitosan coatings using tritium labeled co mpounds as well as improvement in the mechanical characteristics that can be reached with such prepared coatings will be discussed in the presentati on.\nThis research was funded by the Russian Science Foundation (grant num ber 22-23-00019).\n\nhttps://events.sinp.msu.ru/event/8/contributions/473/ LOCATION: Физический ф-т\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/473/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF VOLUMETRIC ACTIVITY OF RADON IN AQUATIC MEDIUM BY METHOD LIQUID-SCINTILLATION SPECTROMETRY DTSTART;VALUE=DATE-TIME:20220715T093000Z DTEND;VALUE=DATE-TIME:20220715T095000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-476@events.sinp.msu.ru DESCRIPTION:Speakers: Галина Игнатьева (РФ)\nCurrently\, an indirect method of measuring the volumetric activity of Rn-222 in an aq ueous medium\, which is measured in liquids by depositing its daughter dec ay products or by bubbling liquid\, is used to analyze samples of water bo dies of regions with a naturally elevated level of radiation and its effec t on the human body. These methods have a number of disadvantages\, such a s low particle detection sensitivity\, since Rn-222 concentration measurem ents are made not on a straight line\, but indirectly through the determin ation of the concentration of daughter elements. Measuring the volumetric activity of radon and calculating the equivalent equilibrium volumetric ac tivity (EEVA) with model weighing coefficients consists of several stages and is carried out using solid-state standards of Ra-226\, ionization cham bers\, semiconductor gamma spectrometers with detectors from particularly pure germanium and other devices. In this regard\, the development and imp lementation of a new method for measuring radon in water are relevant.\nTh is paper proposes a new method of experimental measurement of the ratios o f the current activity of radon and EEVA in a liquid\, based on the effect of the total alpha-beta radiation of radon decay products by liquid scint illation spectrometry - a modern highly sensitive means for measuring alph a-beta radionuclides in a liquid medium. During the study\, the radon conc entration in the rock sample from the uranium deposit in the Aldan region of the Republic of Sakha (Yakutia) was determined by calculating the ratio of instantaneous and equivalent equilibrium volumetric activities of rado n in the water tincture of crushed uranium ore. The experiment was carried out using a scheme for the decay of Ra-226\, developed at the Skobeltsyn Institute of Nuclear Physics\, Lomonosov Moscow State University. To measu re the concentration of radon and its daughter decay products\, a low-phon ic liquid scintillation alpha and beta spectrometer of Hidex SL-300 (Finla nd) was used\, which allows measuring the tritium content in water up to 1 Bq/l. During the experiment\, values of the activity of the daughter de cay products of radon corresponding to its EEVA were obtained\, taking int o account the formation of α- and β-particles during the decay of the ra don itself and its daughter elements\, such as Po-218\, Pb-214\, Bi-214\, Po-214\, Pb-210\, and using the law of radioactive decay of Rn-2222.\nThis method of analysis of radon concentration can be used more effectively in studies of the degree of radioactivity of samples from various media comp ared to existing methods of measuring radon concentration\, which require high time and other resource cos\n\nhttps://events.sinp.msu.ru/event/8/con tributions/476/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/476/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of extraction system “N\,O-donor heterocyclic amide/europi um nitrate” by EXAFS and 1H-NMR spectroscopy. DTSTART;VALUE=DATE-TIME:20220713T145000Z DTEND;VALUE=DATE-TIME:20220713T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-475@events.sinp.msu.ru DESCRIPTION:Speakers: Leonid Starostin (Moscow State University)\nOne of t he major problems of nuclear energy is long-term nuclear waste reprocessin g and storage. Current technologies are able to partially regenerate nucle ar fuel but lead to the accumulation of long-living high-level nuclear was te (HLW). Reducing nuclear waste levels requires the effective and selecti ve separation of minor actinides from HLW possessing high content of lanth anides.\nRecently we study derivatives of diamides of 2\,2'-bipyridyl-6\,6 '-dicarboxylic acid\, such as bipy-4Hex as an extraction material. For dee per understanding of extraction process we study the structure of the euro pium complex of this ligand in crystal and solution\, as well as an extrac tion system with a ligand and europium nitrate.\nIn order to establish the atomic environment of europium we used the experimental EXAFS technique. The absorption spectra of X-ray radiation for crystalline compounds and so lutions of europium complexes with nitric acid were measured. Experimental data on X-ray spectroscopy were obtained at the STM station of the Kurcha tov Synchrotron Radiation Center. The detection was carried out in the “ transmission” mode and by the output of fluorescent radiation. A visual comparison of the XANES spectra confirms the preservation of the degree of oxidation of Eu both in solution and in the crystalline state. Comparison of the Fourier transformed spectra of EXAFS shows the identity of the coo rdination spheres near Eu ion. In order to clarify the atomic geometry\, t he EXAFS spectra were adjusted.\nIn addition\, we used 1H-NMR spectroscopy to study extraction systems: the ligand solutions in nitrobenzene-d5 and an aqueous solution of europium nitrate with different concentrations of n itric acid were mixed and the spectrum was obtained from the organic layer . At concentrations of nitric acid 1M and lower only ligand peaks were obs erved in the spectrum\, at higher concentrations of nitric acid\, peaks of the complex appeared. For such systems\, we calculated the complex-ligand concentration ratio from the spectra and distribution coefficients.\n\nht tps://events.sinp.msu.ru/event/8/contributions/475/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/475/ END:VEVENT BEGIN:VEVENT SUMMARY:Flexible scenario for background suppression in heavy element rese arch DTSTART;VALUE=DATE-TIME:20220712T072000Z DTEND;VALUE=DATE-TIME:20220712T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-490@events.sinp.msu.ru DESCRIPTION:Speakers: Yury Tsyganov (JINR)\nNew algorithms to operate with new analog spectrometer of the DGFRS2 installed at DC-280 cyclotron setup are presented. The main goal of application of these algorithms is to sea rch an optimal time correlation recoil-alpha parameter directly during the acquisition C++ code execution. A new real-time flexible algorithm is pre sented in addition to the conventional ER-α one which is in use for a few years at the DGFRS1 setup installed at the U-400 FLNR cyclotron. Note tha t the spectrometer operates together with the 48×128 strip DSSD (Double S ide Strip Detector\; 48x226 mm$^2$) detector and low pressure pentane-fill ed gaseous detector (1.2 Torr\; 80x230 mm$^2$) are presented schematically . First beam test results in $^{48}$Ca induced nuclear reactions are pres ented too.\n\nhttps://events.sinp.msu.ru/event/8/contributions/490/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/490/ END:VEVENT BEGIN:VEVENT SUMMARY:MEPHI’S OPTION OF LAB SCALE COMPTON SOURCE DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-477@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Polozov (NRNU MEPhI)\nA development and const ruction of comparatively cheap and compact (several meters scale) X-ray so urces is possible with the help of inverse Compton scattering of laser pho tons on an electron bunch. Such sources can be used in the field of materi als science (new materials\, diagnostics of nanostructures at the atomic l evel)\, research of nano- and biosystems\, medicine and pharmacology (new drugs R&D)\, physics and chemistry of fast-flowing processes (burning\, ex plosion). It is suggested that compact storage synchrotron will operate wi th normal conducting S-band top-up linac. Linac will provides bunches with tunable energy in the range of 20-60 MeV to generate the photon flux with tunable energy [1\, 2]. The use of a storage ring provides the following advantages: comparatively high average intensity of the generated photon f lux\, high brightness\, photon beam energy tuning in a wide range\, high d egree of monochromaticity and coherence of the generated photons. There ar e current results of the design of a compact storage ring for generating t he photons in the energy range of 5-30 keV and investigations of the devel opment of relativistic picosecond electron beam dynamics instabilities in the report.\n\n1. V. S. Dyubkov et al.\, Beam dynamics investigation for a new project of compton back scattering photon source at NRNU MEPhI // 12t h IPAC\, May 2021\, Online\, Brazil. MOPAB042.\n2. V.S. Dyubkov\, S.M. Pol ozov\, Storage ring design and beam instabilities investigation for MEPHI ’s photon source // Proc. of RuPAC 2021\, Alushta\, Russia\, 2021\, P. 2 77-279.\n\nhttps://events.sinp.msu.ru/event/8/contributions/477/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/477/ END:VEVENT BEGIN:VEVENT SUMMARY:Experiments to search for singlet deuteron and problem of the dine utron DTSTART;VALUE=DATE-TIME:20220715T145000Z DTEND;VALUE=DATE-TIME:20220715T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-479@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Borzakov (FLNP JINR)\nThe possibility of the existence of quasi-stationary state of a neutron and a proton in the 1S0 s tate with a mass slightly less than the sum of the masses of the neutron a nd proton is discussed in a number of works. This work discusses the manif estations of this level in electromagnetic interactions - radiative captur e np-dγ and scattering of gamma quanta by deuterons. The problem of the existence of the singlet deuteron is connected with the question of the ex istence of the dineutron. Literature data on this problem are presented. \ n\n1. T. Belgya\, S.B. Borzakov\, M. Jentschel\, B. Maroti\, Yu.N. Pokotil ovski\, L. Szentmiklosi\, Phys. Rev. C99\, 044001 (2019).\n2. S.B. Borza kov\, E-ArXive\, nucl-ex: 2105.10286 (2021).\n\nhttps://events.sinp.msu.ru /event/8/contributions/479/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/479/ END:VEVENT BEGIN:VEVENT SUMMARY:NATURAL WIDTHS OF ATOMIC LEVELS IN THORIUM DETERMINED BY THE ICES METHOD DTSTART;VALUE=DATE-TIME:20220712T143000Z DTEND;VALUE=DATE-TIME:20220712T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-480@events.sinp.msu.ru DESCRIPTION:Speakers: Anvar Inoyatov (Joint Institute for Nuclear Research \, Dubna)\nThe overwhelming majority of the experimental atomic-level widt hs in thorium (see\, e.g.\, the compilation [1]) were determined by the X- ray emission spectroscopy and only several N-subshell values were obtained by the XPS method. There are no available relevant experimental data dete rmined by another methods. Therefore\, we used suitable conversion electro n lines of the 9.2\, 15.1 and 24.3 keV nuclear transitions in 227Th (gener ated in the ꞵ ̶ decay of 227Ac) measured in the works [2\,3] for the d etermination of the M1\, M2\, M3\, N1\, N2\, and N3 atomic-level widths us ing the approach and the computer code [4]. The values obtained are given in the table (in eV). \n\n Atomic subshell\n M1 M2 M3 N1 N2 N3\nThis work 14.1±0.5 11.4±0.5 6.9±0.4 11.4±1.4 8.6±1.2 6.0±0.7\nRef. [1] 15.5±2 .0 13.2±(5÷25)% 8±(5÷25)% 11.5±(10%) 8.8±0.8 7.5±1.0\n\nAs can be s een\, the agreement within 2σ (or better) is found between the present an d compilated data [1] and for the most of the atomic subshells in question our values are more precise. Thus\, our data represent a valuable contrib ution to the database of the experimental natural atomic-level widths of t horium.\n\n[1] J.L. Campbell\, T. Papp\, Atom. Data Nucl. Data Tables\, 7 7 (2001) 1.\n[2] A. Kovalík et al.\, Eur. Phys. J. A\, 55 (2019) 131.\n[3 ] A. Kovalík et al.\, Eur. Phys. J. A\, 57 (2021) 285.\n[4] A. Inoyatov et al.\, J. Elect. Spec. Relat. Phenom.\, 160 (2007) 54.\n\nhttps://events .sinp.msu.ru/event/8/contributions/480/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/480/ END:VEVENT BEGIN:VEVENT SUMMARY:Nuclei Identification by Multiple Energy Losses in Detectors of th e PAMELA Spectrometer DTSTART;VALUE=DATE-TIME:20220715T070000Z DTEND;VALUE=DATE-TIME:20220715T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-481@events.sinp.msu.ru DESCRIPTION:Speakers: Vladislav Alekseev (Yaroslavl State University)\nPAM ELA magnetic spectrometer [1] includes a set of detectors\, each of which measures the energy losses of charged particles along its trajectory. In t otal\, it is possible to obtain up to 6 values of energy loss in detectors of the time-of-flight system\, up to 12 values in the track system\, and up to 43 values in the calorimeter. This information combined with rigidit y and velocity measurements can be used for effective identification of pa rticles.\nWe propose two algorithms for identification of nuclei with atom ic numbers 1 – 26 (from protons up to iron): the first algorithm is base d on maximum likelihood estimation method\, and the second is based on mac hine learning. For both algorithms we performed Monte Carlo simulation of particles interaction in detectors of PAMELA with Geant4 software [2].\nTh e first algorithm consists of the following steps.\n1. Fit the energy loss distributions in simulation for each detector depending on particle type and magnetic rigidity $R$ by a 2-parametric family of distributions $f(x\; \\mu\, \\sigma)$. \n2. Approximation of the relation between parameters $ (\\mu\, \\sigma)$ and particle rigidity by some functions $\\hat{\\mu}(x)$ and $\\hat{\\sigma}(x)$. As a result\, we obtain a set of functions $\\ha t{\\mu}_{ij}(x)$ and $\\hat{\\sigma}_{ij}(x)$ for each nucleus number (cha rge) $i$ and detector number $j$.\n3. After that\, we can apply an algorit hm to the experimental data. For each nucleus type calculate a likelihood function (where $R$ is magnetic rigidity):\n$$L_i(R) = \\sum\\limits_{j = 1}{N} \\ln f(R\; \\hat{\\mu}_{ij}(R)\, \\hat{\\sigma}_{ij}(R))$$\nThe resu lt of an identification algorithm is a nucleus $n$\, which minimizes $L_i (R)$:\n$$\\hat{n} = \\arg\\min\\limits_{i}⁡L_i(R).$$\nThe second method is based on machine learning using the gradient boosting method\, which is currently one of the reference methods of classical learning [3]. The mag netic rigidity and energy releases along the trajectory are used as featur es.\nWe present the results of each of the above methods separately\, as w ell as in comparison with each other.\n1. Adriani O. et al. Astrophys J (2 014) 791:93\n2. S. Agostinelli et al.\, Nucl. Instrum. Meth. A 506\, pp. 2 50-303\, 2003.\n3. Friedman\, Jerome. (2000). Greedy Function Approximatio n: A Gradient Boosting Machine. The Annals of Statistics. 29.10.1214/aos/1 013203451\n\nhttps://events.sinp.msu.ru/event/8/contributions/481/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/481/ END:VEVENT BEGIN:VEVENT SUMMARY:LITHIUM-10 AS BORROMEAN NUCLEUS SUBSYSTEM DTSTART;VALUE=DATE-TIME:20220715T130000Z DTEND;VALUE=DATE-TIME:20220715T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-499@events.sinp.msu.ru DESCRIPTION:Speakers: Pavel Sharov (JINR)\nThe Borromean system have a wid e spread near nuclear driplines. These systems are of strong interest for theoretical and experimental studies because of their exotic properties\, such as strong nuclear matter asymmetry and anomalous nuclear density (ha lo effect).\nThe cluster three body models usually provide good descriptio n of the borromean nuclei structure. In particular\, three-body model rep roduce nuclear halo effect and anomalous matter radius for bound states of borromean nuclei and partial width for two-proton / two-neutron decays fo r continuum states. Obviously\, cluster models require accurate treatment of interaction between clusters. When one have reasonable description fo r nucleon-nucleon interaction\, treatment of interaction of the core (whic h is also dripline nucleus) with nucleon is complex problem.\nOn example o f nuclear system 10Li and 11Li two quite general problems will be discusse d: how structure of borromean system connected with structure of it binary subsystems\; and how interaction in binary subsystems can be experimental ly studied.\n\nhttps://events.sinp.msu.ru/event/8/contributions/499/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/499/ END:VEVENT BEGIN:VEVENT SUMMARY:Distribution on electron energy in two-neutrino double beta deca y of 100Mo DTSTART;VALUE=DATE-TIME:20220714T143000Z DTEND;VALUE=DATE-TIME:20220714T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-483@events.sinp.msu.ru DESCRIPTION:Speakers: Sergei Semenov (National Research Centre "Kurchatov Institute")\nNowadays a considerable attention is paid to experiments on t wo-neutrino double beta decay of stable isotopes. In large-scale projects a great amount of data on 22-transitions is accumulated\, which give s the possibility to build the intensity distribution on total emitted el ectrons energy.. These information can be used in searching for new physic s\, for example\, aimed at investigation of neutrino statistics [1]\, Lore ntz violation effects [2]\, two-neutrino double beta-decay with sterile ne utrinos [3].\n In measurements\, produced with the help of NEMO-3 detect or\, which is capable to reconstruct the full topology of  processes \, characteristics of more than 600 000 22-decays of 100Mo have bee n recorded [4]. \n In order to provide a way for new physics searches it i s necessary to determine the nuclear mechanism of 22-transition. In the same way as for the ordinary -decay\, it is reasonale to consruct K urie plot for double beta-process [3]. Kurie plot has different form for two kinds of 22-amplitude : when contribution of lowest 1+ -energy level of intermediate nucleus dominates - single state dominance\, SSD\, and for the case of higher-states dominance\, HSD. Kurie plots for 100Mo t wo-neutrino double beta-decay were built for SSD mechanism with a certain addition to amplitude of low-lying excited 1+ - states of intermediate nuc leus 100Tc [5]\, for HSD mechanism\, and for double beta--decay with emiss ion of sterile neutrino\, corersponding to both SSD and HSD nuclear mechan isms.\n\n\n\n1. A.S. Barabash\, A.D. Dolgov\, R. Dvornicky\, F. Šimkovic\ , A.Yu. Smirnov\, Nucl. Phys. 783\, 90 (2007) \n2. O. Nitescu et al\, J. P hys. G 47\, 55112 (2021)\n3. P.B. Bolton\, F.F. Deppisch\, L.Graf\, F Ši mkovic Phys. Rev. D 103\, 055019 (2021)\n4. R. Arnold et al\, (NEMO-3 Co llaboration) Eur. J. Phys. C 79\, 440 (2019)\n5. S.V. Semenov\, Phys. Part . Nucl. 48\, 1018 (2017) \;\n S.V. Semenov. Phys. Part. Nucl.\, 49 \, 698 (2018)\n\nhttps://events.sinp.msu.ru/event/8/contributions/483/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/483/ END:VEVENT BEGIN:VEVENT SUMMARY:4π-METHODS FOR TOTAL REACTION CROSS SECTION MEASUREMENTS DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-485@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Stukalov (JINR\, Dubna\, Russia)\nA review an d analysis of experimental 4π-methods for total reaction cross section σ $_{\\rm{R}}$ measurements are presented. The methods for σ$_{\\rm{R}}$ me asurements are based on the 4π-technique of registering prompt γ-quanta and neutrons in a solid angle close to the full angle Ω = 4π.\n\nThe des cription the method applied to measuring γ-detection efficiency ε(*M*$_{ {\\gamma}}$) for various values of γ-multiplicity *M*$_{{\\gamma}}$ are p resented. The experimental facility and 4π scintillation spectrometer for *M*${_{{\\gamma}}}$ measurement are described.\n\nThe comparison and anal ysis of the two experimental 4π-methods developed at FLNR JINR\, Dubna fo r σ$_{\\rm{R}}$ measurements in the reactions with neutron-rich weakly bo und nuclei are presented. The first method is based on the mean value of t he detection efficiency which does not depend on γ-multiplicity *M*${_{{ \\gamma}}}$ [1]. In the second method\, we use the experimentally obtained response function ${w_M}\\left( k \\right)$ (the distribution of the numb ers of triggered detectors *k* in registration of γ-cascade with a fixed value of *M*${_{{\\gamma}}}$) [2].\n\n1. Yu.E. Penionzhkevich\, Yu.G. Sobo lev\, V.V. Samarin\, and M.A. Naumenko\, Phys. Atom. Nucl. 80\, 928 (2017) .\n2. Yu.E. Penionzhkevich\, Yu.G. Sobolev\, V.V. Samarin\, M.A. Naumenko\ , N.A. Lashmanov\, V.A. Maslov\, I. Siváček\, and S.S. Stukalov\, Phys. Rev. C 99\, 014609 (2019).\n\nhttps://events.sinp.msu.ru/event/8/contribut ions/485/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/485/ END:VEVENT BEGIN:VEVENT SUMMARY:Elliptic flow for π0 mesons in asymmetric Cu+Au collis ion system at √sNN=200 GeV DTSTART;VALUE=DATE-TIME:20220713T120000Z DTEND;VALUE=DATE-TIME:20220713T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-484@events.sinp.msu.ru DESCRIPTION:Speakers: Egor Bannikov (Peter the Great St.Petersburg Polytec hnic University (SPbPU))\nQuark-gluon plasma (QGP) is a state of nuclear m atter\, where quarks and gluons are deconfined [1]. It can be formed in la boratory conditions in collisions of heavy ions at high energies [2]. Elli ptic flow (v2)\, which reflects azimuthal anisotropy of hadron production in heavy ion collisions\, is one of the main observables characterizing pr operties of QGP [3]. The study of the elliptic flow in relativistic heavy ion collisions (Cu+Cu and Au+Au) leads to the assumption that the QGP beha ves as a nearly inviscid fluid [4]. The measurements of the v2 in Cu+Au as ymmetric collision system allow to determine the dependence of the ellipti c flow for light hadrons on the initial geometry of the system [5]. Since π0 meson consists of the first-generation quarks (u\, d)\, its production is well-measurable up to high values of pT. Thus\, the measurement of π0 meson v2 in Cu+Au collisions is considered as an effective tool to study QGP’s properties. \nIn symmetric collision systems such as Cu+Cu and A u+Au the scaling of elliptic flow values v2 for π0 mesons with the partic ipant nucleon eccentricity (ε2) and with the third root of the number of participant nucleons (Npart1/3) in all centrality classes was observed [6] . Such scaling could be interpreted in the frame of relativistic hydrodyna mic model\, considering QGP formation [7]. The observation of ε2 Npart1/3 scaling in asymmetric Cu+Au collision system could lead to a conclusion t hat v2/(ε2 Npart1/3) values for π0 mesons do not depend on the initial g eometry of the system. Current report presents the study of the elliptic f low for π0 mesons in asymmetric Cu+Au collisions at √sNN=200 GeV versus transverse momentum and centrality of the collision. \nThe research is p artially funded by the Ministry of Science and Higher Education of the Rus sian Federation under the strategic academic leadership program ’Priorit y 2030’ (Agreement 075-15-2021-1333 dated 30.09.2021). \n1. H. Bueschin g et al. (PHENIX Collaboration)\, J.Phys. G31 (2005) S473-S480\;\n2. Adcox K. et al. (PHENIX Collaboration)\, Nucl. Phys. A 2005. V.757\;\n3. P. Sor ensen. (2010). Elliptic Flow: A Study of Space-Momentum Correlations in\nR elativistic Nuclear Collisions. Quark-gluon plasma 4 (pp. 323-374)\;\n4. K . Adcox et al. (PHENIX Collaboration)\, Nucl. Phys. 103 A757\, 184 (2005)\ ;\n5. R. Snellings. New J.Phys.\, 13 055008 (2011)\;\n6. A. Adare et al. ( PHENIX Collaboration)\, Phys.Rev.C 88\, 064910 (2013)\;\n7. Chaudhuri\, A. (2013). Viscous Hydrodynamic Model for Relativistic Heavy Ion Collisions. Advances in High Energy Physics. 2013. 10.1155/2013/693180.c\n\nhttps://e vents.sinp.msu.ru/event/8/contributions/484/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/484/ END:VEVENT BEGIN:VEVENT SUMMARY:MULTIPLICITY DISTRIBUTIONS AND COMBINANTS IN MULTI-POMERON EXCHANG E MODEL DTSTART;VALUE=DATE-TIME:20220713T153000Z DTEND;VALUE=DATE-TIME:20220713T155000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-488@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Vechernin (St. Petersburg State University) \nIn the framework of the multi-pomeron exchange model (MPEM) with string fusion [1\,2] we study the multiplicity distributions of charged particles and their combinants in pp collisions at LHC energies and compare the res ults with the data obtained by ALICE [3] and CMS [4] collaborations at CER N. We use the standard distribution in number of cut pomerons in pp collis ions [5]. In this model\, each cut pomeron corresponds to the formation of a pair of quark-gluon strings. An increase in the multiplicity density wi th initial energy in pp collisions is explained by an increase in the mean number of cut pomerons and a growth of the average multiplicity from a si ngle string. The last effectively takes into account the string fusion pro cesses. \nWe show that the initial version of the MPEM with the Poisson di stribution of particles from a single pomeron can not explain the experime ntal data. We replace the Poisson distribution by a Gaussian distribution with the scaled variance ω>1\, corresponding to the NBD at high multiplic ities. We found that the value of ω increases with the width of observati on window in pseudorapidity. This is in correspondence with the result obt ained in [6-8] that the ω-1 is proportional to the width of the observati on window and the integrated two-particle correlation function of a single source (string). As a result we obtain a satisfactory description of the ALICE and CMS experimental data on the multiplicity distribution of charge d particles in pp collisions for observation windows of various width in e nergy range from 0.9-7 TeV. \nUsing the calculated multiplicity distributi on we also found their combinants. We see that these quantities really are very sensitive to the form of the multiplicity distribution spectra\, as it was pointed out in [9]. Even minor deviations of the ALICE and CMS data \, within the error\, lead to considerable changes in combinants. However\ , our results of calculating combinants in the framework of the MPEM manag e to reproduce the general behavior of combinants with their number\, in p articular\, their oscillations. The research was supported by St. Petersbu rg State University (project No. 93025435). \n\n1. N. Armesto\, D. A. Derk ach\, G. A. Feofilov\, Phys. Atom. Nucl. 71\, 2087 (2008).\n2. V. N. Koval enko\, A. M. Puchkov\, G. A. Feofilov\, Bull. RAS.: Phys. 80\, 966 (2016). \n3. J. Adam et al. (ALICE Collaboration)\, Eur. Phys. J. C 77\, 33 (2017) .\n4. V. Khachatryan et al. (CMS Collaboration)\, J. High Energy Phys. 01\ , 079 (2011).\n5. G. H. Arakelyan\, A. Capella\, A. B. Kaidalov\, Yu. M. S habelski\, EPJC 26\, 81 (2002).\n6. V. Vechernin\, Eur. Phys. J.: Web of C onf. 191\, 04011 (2018).\n7. E. Andronov\, V. Vechernin\, Eur. Phys. J. A 55\, 14 (2019).\n8. S. Belokurova\, Phys. Part. Nucl. 53\, 154 (2022).\n9. G. Wilk\, Z. Włodarczyk\, J. Phys. G 44\, 015002 (2017).\n\nhttps://even ts.sinp.msu.ru/event/8/contributions/488/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/488/ END:VEVENT BEGIN:VEVENT SUMMARY:Anisotropic flow measurements from the NA61/SHINE and NA49 beam mo mentum scan programs at the CERN SPS DTSTART;VALUE=DATE-TIME:20220715T122000Z DTEND;VALUE=DATE-TIME:20220715T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-492@events.sinp.msu.ru DESCRIPTION:Speakers: Oleg Golosov (NRC "Kurchatov Institute"\, NRNU MEPhI )\nThe NA61/SHINE experiment at the CERN SPS has recently extended its pro gram for the energy scan with Pb ions. In the past\, the NA49 experiment\, which preceded NA61/SHINE\, also recorded data for Pb-Pb collisions at di fferent energies. Together\, the two experiments cover a wide range of bea m energies provided by the CERN SPS in the range 13 – 150A GeV/c. Analys is of the new NA61/SHINE data and reanalysis of the existing NA49 data usi ng newly developed procedures allow for a new comprehensive systematic stu dy of collective flow relative to the spectator plane.\n\nWe will present new NA61/SHINE results on directed and elliptic flow measurement in Pb-Pb collisions at 13 and 30A GeV/c relative to the spectator plane determined with the Projectile Spectator Detector. Also a new analysis of 40​A GeV data collected by the NA49 experiment using forward spectator calorimeters (VETO and RCAL) will be shown. The flow coefficients are reported as a fu nction of rapidity and transverse momentum in different classes of collisi on centrality. The new results are compared with existing results from the previous NA49 analysis and the STAR experiment at RHIC.\n\nhttps://events .sinp.msu.ru/event/8/contributions/492/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/492/ END:VEVENT BEGIN:VEVENT SUMMARY:Nucleon resonance contributions to inclusive electron scattering DTSTART;VALUE=DATE-TIME:20220714T120000Z DTEND;VALUE=DATE-TIME:20220714T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-491@events.sinp.msu.ru DESCRIPTION:Speakers: Vitaly Chesnokov (SINP MSU)\nExperiments with the CL AS detector at Jefferson Lab provided the dominant part of available in th e world information on exclusive meson electroproduction in the resonance excitation region. Analyses of these results allow us to obtain electrocou pling of most excited states of the nucleon in mass range up to 1.75 GeV a nd at photon virtuality Q2 from photon point and up to 5 GeV2 [1]. It made possible\, for the first time\, evaluate the resonant contribution into i nclusive electron scattering observables from experimental results on nucl eon resonance electrocouplings [2\,3].\nThe approach and the computational tool developed for evaluation of the resonant contribution into inclusive electron scattering observables will be presented in the talk. We use a r elativistic Breit-Wigner ansatz to estimate the resonant contributions to the inclusive electron scattering unpolarized cross sections and to the un polarized structure functions F1 and F2. In extraction of F1 and F2 struc ture functions from the data\, the experimental results on the longitudina l over transverse cross section ratio RLT available from the Hall A/C meas urements [2\,4] was used.\nThe results obtained offer new opportunities fo r insight into unpolarized parton distribution function (PDF) in the groun d state of the nucleon at large values of partial parton momentum x within the resonance excitation region and for exploration of quark-hadron duali ty. Further extension of this effort in 12 GeV era at Jefferson Lab will a llow us to obtain the resonant contributions into inclusive electron scatt ering within Q2 range up to 10 GeV2\, offering a unique information on PDF evolution in the resonance region at the distances where the transition f rom quark-gluon confinement to perturbative QCD regime of strong interacti on is expected.\n\n1. D.S. Carman\, K. Joo\, and V.I. Mokeev\, Few Body Sy st. 61\, 29 (2020).\n2. A. N. Hiller Blin\, et al.\, Phys. Rev. C 100\, 03 5201 (2019)\n3. A. N. Hiller Blin\, et al.\, Phys. Rev. C 104\, 025201 (20 21)\n4. V. Tvaskis et al.\, Phys. Rev. C 97\, 045204 (2018)\n\nhttps://eve nts.sinp.msu.ru/event/8/contributions/491/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/491/ END:VEVENT BEGIN:VEVENT SUMMARY:THE HALF-LIFE OF 229mTh ISOMERS IN ACID SOLUTION DTSTART;VALUE=DATE-TIME:20220712T141000Z DTEND;VALUE=DATE-TIME:20220712T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-494@events.sinp.msu.ru DESCRIPTION:Speakers: Vladimir Koltsov (Khlopin Radium Institute\, Saint-P etersburg\, Russian Federation)\nThe 229mTh isomeric state with an energy of about 8 eV is formed in 2% of the cases of 233U α-decay (see ref. [1] and references therein). For neutral 229mTh atoms\, the main decay channel is nonradiative – it is either electronic conversion or decay via an el ectronic bridge. An estimate of the probability of a decay with photon emi ssion γTh gives a half-life T1/2 ≈ 2 h and is much smaller than the pro bability of a nonradiative transition. Photons can only be observed for 22 9mTh ions when the nonradiative channel is closed.\nHere we give a detaile d analysis of work [2]\, where γTh photons were observed for 4+ ions of 2 29mTh in HCl acid solution obtained in an ion exchange column from 0.1 g U (the relative α-activities of 233U and 232U were 99.8% and 0.02%\, respe ctively). In each of several experiments four samples were sequentially pr epared with 229mTh in 7M HCl aqueous solution by eluting once an hour fres h Th from U\, which was previously purified from Th and its daughters. Sou rces for \nα-spectrometry were prepared from the second and third samples \; for each of them the α-activity of Th daughters increased with time. T hus\, the α-activity of the samples could not lead to their damped photon emission.\nThe first and fourth liquid samples of 229mTh were placed into thin-layer quartz cuvettes\, and t = 60 min after Th elution\, the photon counting intensity N(t) from the samples was measured by a photomultiplie r with a Sb-Na-K-CS photocathode\, the photo efficiency was about 1% in th e wavelength range of 300 – 800 nm. The time dependence of N(t) averaged over all experiments was approximated as \, where A = 9  3\, T1 = 22  3 min\, T2 = 290  50 min (errors are one standard deviation). N0 wa s proportional to the -activity of 229Th in the samples with an accurac y of 20% and did not correlate with their total -activity. It can be as sumed that for the 229mTh isomer in an HCl solution\, T1/2 is in the range of 20 – 400 min. To refine T1/2 and the isomeric transition energy\, it is necessary to study the photon spectrum of such samples.\n\n1. B.S. Nic kerson\, M. Pimon\, P.V. Bilous et al.// PRA. 103\, 053120 (2021).\n2. V.V . Koltsov\, T.E. Kuzmina\, D.N. Suglobov. Half-life measurement of the 229 Th isomer. Proc. Int. Conf. on Nucl\, Phys.\, Moscow\, June 16–19\, P. 2 66 (1999).\n\nhttps://events.sinp.msu.ru/event/8/contributions/494/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/494/ END:VEVENT BEGIN:VEVENT SUMMARY:RADIATIVE CAPTURE IN THE $^4$He + $^2$H SYSTEM IN THE FRAMEWORK OF A MICROSCOPIC APPROACH DTSTART;VALUE=DATE-TIME:20220715T140900Z DTEND;VALUE=DATE-TIME:20220715T142900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-498@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Solovyev ()\nThe $^4$He + $^2$H system is of great importance for nuclear astrophysics because the radiative capture proceeding in this system is responsible for production of the $^6$Li nuc lei during the primordial nucleosynthesis. In this work\, the $^4$He + $^2 $H radiative capture reaction is considered from the microscopic viewpoint within a developed approach [1\, 2] based on clustering aspects of nuclea r structure and dynamics and formalism of expansions over the oscillator b asis. The cross section of the reaction in terms of the astrophysical $S$ factor is calculated. The low-energy dependence of the total astrophysical $S$ factor serves as a source of information useful for the so-called sec ond “lithium puzzle”. A comparison of the obtained results with experi mental data is performed.\n\n1. A. S. Solovyev and S. Yu. Igashov\, Phys. Rev. C 96\, 064605 (2017).\n2. A. S. Solovyev and S. Yu. Igashov\, Phys. R ev. C 99\, 054618 (2019).\n\nhttps://events.sinp.msu.ru/event/8/contributi ons/498/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/498/ END:VEVENT BEGIN:VEVENT SUMMARY:SEARCH CRITERIA FOR MINERAL DEPOSITS IN THE ZONES OF MODERN AND AN CIENT VOLCANISM ON URANIUM AND THORIUM AND THEIR FISSION PRODUCTS DTSTART;VALUE=DATE-TIME:20220712T132000Z DTEND;VALUE=DATE-TIME:20220712T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-496@events.sinp.msu.ru DESCRIPTION:Speakers: Adil Yafyasov (Spbgu)\nA.M. Yafyasov1\, F.F. Valiev1 \, I.R. Makarova2 S.A. Gorobets2\, \nV.O. Sergeev2\, N.A. Sukhanov\, D.K. Makarov3\nmakarova_i_r@mail.ru\n 1 - St. Petersburg State U niversity\, 2 - PETROFIZIK LLC \n\n\nIn the work\, by the method of gamma - spectroscopy [1\,2]\, new data are presented on the deep recharge of the Nizhnechutinsk oil field by ascending gases and hydrotherms with differen t elemental composition. It has been established that formation waters\, a s well as oils\, are enriched in As\, Br\, Ba\, Re\, Ir\, Au\, REE in the fluid replenishment zones. In this case\, the greatest differences relate to the distribution of uranium and thorium over the area of the deposit an d over the underlying oil reservoirs.\nThe results of the studies indicate the overlap and coexistence of deposits of hydrocarbons and ore minerals in the area of ancient volcanism\, while the criteria for the influence of the manifestation of deep processes are both the well-known ratios of ura nium and thorium (U/Th and/or Th/U) and the established we determined the values of the ratios Th/Ba\, Mo/U\, Ba/Mo. \nThe elements Ba and Mo are fi ssion products of uranium and thorium. In this regard\, we assume other ty pes of mineralization\, associated not with the release of magmas of diffe rent composition and post volcanic hydrotherms\, but with known exhalation mineralization. According to our ideas\, this type of mineralization is accompanied by a constant emanation of radioactive elements U\, Th and elements of their radioactive decay along the zones of development of mod ern and paleovolcanic formations. At the same time\, oils in the Upper Dev onian deposits are enriched in a number of elements\, the associations of which depend on the temperature of the ascending gas flows. Taking into ac count the results obtained\, the search for deposits of solid minerals and hydrocarbons is carried out not only in terms of U / Th\, but also accord ing to the new criteria we have established - certain values of the ratios Th / Ba\, Mo / U\, Ba / Mo in the composition of rocks and accumulations of hydrocarbons.\n\n\nLiterature\n\n1.Makarova I.R.\, Laptev N.N.\, Gorobe ts S.A.\, Valiev F.F.\, Yafyasov A.M.\, Sergeev V.O.\, Zippa A.I.\, Sukhan ov N.A.\, Makarov D. .K.\, Grishkanich AS/ Application of methods of gamma spectroscopy and IR spectroscopy for the purposes of prospecting geology. Georesources\, 2021\, No. 1. – P.17 – 29.\n2. Yafyasov A.M.\, Makaro va I.R.\, Valiev F.F\, Laptev N.N.\, Gorobets S.A.\, Sergeev V.O. / The ap plication of gamma-spectrometry with a germanium detector for oil and ore geology // Bulletin of the Russian Academy of Sciences : Physics\, 8 no. - T. 86. - 2022 (in print).\n\nhttps://events.sinp.msu.ru/event/8/contribut ions/496/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/496/ END:VEVENT BEGIN:VEVENT SUMMARY:CRYOGENIC GAS CATHER STOPPING ENERGY EFFICIENCY SIMULATION DTSTART;VALUE=DATE-TIME:20220712T095000Z DTEND;VALUE=DATE-TIME:20220712T101000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-497@events.sinp.msu.ru DESCRIPTION:Speakers: Alena Kohoutova (Joint Institute for Nuclear Researc h\, Flerov Laboratory of Nuclear Reactions\, Joliot Curie 6\, Dubna\, Mosc ow region\, 141980 Russia\; Faculty of Science of Palacký University Olom ouc\, 17. listopadu 1192/12\, 779 00 Olomouc\, Czech Republic)\nThe mass i s a fundamental property of an atom comprising all information on its cons tituents and their interactions. Thus\, it carries information on the inte rnal structure of the nucleus\, reveal the quantum mechanical shell struct ure within complex nuclei and determine the energy available for nuclear t ransformations in radioactive decay processes. Mass measurements allow us to benchmark nuclear models and thus contribute to investigations of the n ature of the strong interaction itself. With the aim of high-precision mas s measurement (HPMM) of heavy and super heavy elements\, a new experimenta l setup is being built in FLNR\, Dubna. The setup consists of the followin g parts: target unit\; gas-filled separator of complete fusion reaction pr oducts\; cryogenic gas stopping cell (CGSC)\; a radio-frequency system for transporting and cooling a low-energy beam\; and a multi-reflection time of flight mass spectrometer (MR-TOF MS). CGSC is responsible for the final slowing down and thermalizing the energy-bunched fragments produced and s elected in the Gas Filled Separator. The thermalization is achieved in a v olume filled with ultra-pure helium gas at cryogenic temperatures. After t he thermalization\, the fragments are extracted and transported with a rad io frequency quadrupole (RFQ) to the MR-TOF MS. The stopping and thermaliz ation of the incoming fusion-evaporation residuals (EVRs) is a key step in HPMM of the heaviest elements. Due to the typically low incoming ion rate s and low particle integrals CGSC has to be as efficient as possible. The HPMM requires at least a few ions for a measurement any loss should be avo ided. The kinetic energy of the incident EVR\, the entrance window foil ty pe and thickness as well as the buffer-gas type and density of the CGSC co ndition the stopping efficiency. Only the ions that are stopped within the active gas volume of the CGSC can be extracted. The stopping efficiencies for EVRs cannot be tested on-line and one have to rely on simulations. To use the CGSC on ion beam the optimal entrance window foil thickness for e very reaction is necessary evaluate. The Geant4 and SRIM software packages was used in these simulations with different entrance window materials an d beam and target combinations.\n\nhttps://events.sinp.msu.ru/event/8/cont ributions/497/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/497/ END:VEVENT BEGIN:VEVENT SUMMARY:ENERGY DEPENDENCE OF TOTAL REACTION CROSS SECTIONS FOR ISOTOPES OF Be ON TARGETS ${}^{28}$Si\, ${}^{59}$Co\, ${}^{181}$Ta DTSTART;VALUE=DATE-TIME:20220712T091000Z DTEND;VALUE=DATE-TIME:20220712T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-501@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Stukalov (JINR\, Dubna\, Russia)\nEnergy depe ndence of the total cross sections σ${_{\\rm{R}}}$(*E*) for reactions ${} ^{10\,11\,12}$Be + ${}^{28}$Si\, ${}^{59}$Co\, ${}^{181}$Ta are presented. The 4π-methods of σ${_{\\rm{R}}}$ measurements are based on registratio n of prompt γ-quanta and neutrons using a 12-module 4π-spectrometer [1]. The results of the two methods for calculating the total reaction cross s ections are presented.\n\nThe values of σ${_{\\rm{R}}}$ were calculated t aking into account:\n\n 1. the mean detection efficiency of the 4π-spect rometer\, which does not depend on γ-multiplicity *M*${_{{\\gamma}}}$ [2] \; \n 2. the distribution of the numbers of triggered detectors during reg istration of the cascades of particles at a fixed value of multiplicity *M *${_{{\\gamma}}}$. \n\nMeasurement of the detection efficiency ε(*M*${_{{ \\gamma}}}$) for various values of γ-multiplicity *M*${_{{\\gamma}}}$ was carried out using the method described in [3].\n\n1. Yu.G. Sobolev\, Yu.E . Penionzhkevich\, V.V. Samarin\, M.A. Naumenko\, S.S. Stukalov\, I. Sivá ček\, S.A. Krupko\, A. Kugler\, and J. Louko\, Bull. Russ. Acad. Sci.: Ph ys. 84\, 948 (2020).\n2. Yu.E. Penionzhkevich\, Yu.G. Sobolev\, V.V. Samar in\, and M.A. Naumenko\, Phys. Atom. Nucl. 80\, 928 (2017).\n2. Yu.E. Peni onzhkevich\, Yu.G. Sobolev\, V.V. Samarin\, M.A. Naumenko\, N.A. Lashmanov \, V.A. Maslov\, I. Siváček\, and S.S. Stukalov\, Phys. Rev. C 99\, 0146 09 (2019).\n\nhttps://events.sinp.msu.ru/event/8/contributions/501/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/501/ END:VEVENT BEGIN:VEVENT SUMMARY:Position sensitive fast neutron detector based on the double-sided silicon strip detectors DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-500@events.sinp.msu.ru DESCRIPTION:Speakers: Askar Erbolot (JINR Dubna\,Russia)\nA two-coordinate position-sensitive silicon detector of fast neutrons [1] was developed at Joint Institute for Nuclear Research (JINR)\, Dubna\, Russia within the f ramework of the TANGRA (TAgged Neutron and Gamma RAys) project [2].\nThe d etector is composed of four double-sided 300 µm thick silicon plates with the dimensions of 60×60 mm2 divided into 32x32 strips on both sides with strip's pitch of 1.81 mm. The X and Y strips of neighboring detectors are connected to each other\, forming a single detector unit with 64x64 strip s and 120x120 mm2 size.\nTo reduce the number of readout channels a specia l multiplexor electronics has been developed reducing the total number of readout channels to 6: one fast common start signal\; four slow position c hannels (2 for each side) and one clock synchronization channel. The data from the detector are read out and analyzed by a multichannel 100 Mhz digi tizer.\nThe performance of the detector was tested with a 256-pixel ING-27 generator of 14.1 MeV tagged neutrons\, which made it possible to reconst ruct a 2-dimensional map of the tagged neutron beams. It was also used for measuring the neutron beam profile with the energies of ~4 MeV generated in d-d reaction at the EG-5 accelerator.\n\nhttps://events.sinp.msu.ru/eve nt/8/contributions/500/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/500/ END:VEVENT BEGIN:VEVENT SUMMARY:Commissioning of the forward detectors to measure spectators in nu cleus-nucleus reactions at the BM@N DTSTART;VALUE=DATE-TIME:20220714T140900Z DTEND;VALUE=DATE-TIME:20220714T142900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-502@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Izvestnyy (INR RAS)\nThe BM@N (Baryonic Ma tter at Nuclotron) is a fixed target experiment at the NICA-Nuclotron (JIN R\, Dubna\, Russia) accelerator complex designed to study the properties o f the dense nuclear matter produced in the nucleus-nucleus collisions. Sev eral forward detectors have been developed and constructed at the INR RAS. These detectors are the Forward Hadron Calorimeter (FHCal)\, the Scintill ation Wall (ScWall) and the Beam Hodoscopes (BH).\nThe FHCal is a lead/sci ntillator sampling hadron calorimeter with modular design and longitudinal module segmentation. The calorimeter has a hole in the center for the pas sage of the beam particles that did not interact with the target through t he calorimeter. The ScWall consists of scintillator tiles and is designed to detect the charged fragments from nucleus-nucleus reactions. The BHs ar e designed for detection of heaviest nuclear fragments and non-interacting beam ions. They will be installed on the entrance of the FHCal and will c over the beam hole of the calorimeter. The BHs consist of optically isolat ed scintillator or quarz bars with light collection from both ends. All fo rward detectors have light detection performed by silicon photomultipliers . Signals are amplified and digitized with fast sampling ADCs.\nThe status of development and construction of the forward detectors for the BM@N exp eriment will be presented. Performance of the forward detectors and their calibration during the Short Range Correlations (SRC) run period at the BM @N will be discussed.\n\nhttps://events.sinp.msu.ru/event/8/contributions/ 502/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/502/ END:VEVENT BEGIN:VEVENT SUMMARY:Application of the MC-Glauber approach for centrality determinatio n in heavy-ion collisions with the BM@N experiment DTSTART;VALUE=DATE-TIME:20220714T142900Z DTEND;VALUE=DATE-TIME:20220714T144900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-503@events.sinp.msu.ru DESCRIPTION:Speakers: Alexandra Andomina (NRNU MEPhI)\nCentrality is an im portant concept in the study of strongly interacting matter created in a h eavy-ion collision whose evolution depends on its initial geometry. In the case of Baryonic Matter at Nuclotron (BM@N)\, which is a fixed-target exp eriment\, collision can be characterized by the measured multiplicity or e nergy of produced particles at midrapidity or spectator fragments in the f orward rapidity region.\nWe will present the application of the MC-Glauber approach for centrality determination in heavy-ion collisions with the BM @N experiment. The multiplicity of charged hadrons is measured in BM@N usi ng a combination of Silicon Tracking System (STS) and Gaseous Electron Mul tiplier (GEM) detectors and connected to collision geometry parameters usi ng the Monte-Carlo Glauber model. We will discuss the applicability of the standard Monte-Carlo Glauber approach for medium-sized nuclei collisions with low multiplicity\, which is typical for the BM@N.\n\nhttps://events.s inp.msu.ru/event/8/contributions/503/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/503/ END:VEVENT BEGIN:VEVENT SUMMARY:TIME-DEPENDENT MICROSCOPIC DESCRIPTION OF FAST ALPHA PARTICLES EMI TTED IN NUCLEUS-NUCLEUS COLLISIONS DTSTART;VALUE=DATE-TIME:20220712T070000Z DTEND;VALUE=DATE-TIME:20220712T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-505@events.sinp.msu.ru DESCRIPTION:Speakers: Viacheslav Samarin (Joint Institute for Nuclear Rese arch)\nAppearance of new experimental data on the energy spectra of fast a lpha particles emitted in heavy-ion reactions [1\,2] requires development of microscopic models of such processes. The mechanism of nonequilibrium e mission of alpha particles after capture of the projectile nucleus by the target nucleus is studied within the microscopic approach based on the tim e-dependent Schrödinger equation for the wave function of an alpha partic le [1\,3] (Fig. 1). Transfer of energy from the colliding nuclei to the al pha particle is studied in the quantum three-body one-dimensional time-dep endent model [4]. The possibility of cooling of superheavy compound nuclei via emission of fast alpha particles (e.g.\, in the reaction ) is discus sed.\n\nFig. 1. Evolution of the wave function of emitted alpha particle i n the collision of `${}^{48}$Ca + ${}^{197}$Au at beam energy 280 MeV.\n\ n1. Yu. E. Penionzhkevich\, V. V. Samarin\, V. A. Maslov *et al*.\, Phys. At. Nucl. 84\, 115 (2021).\n2. Yu. E. Penionzhkevich\, S. M. Lukyanov\, V. A. Maslov *et al*.\, Phys. At. Nucl. 85\, 145 (2022).\n3. V. V. Samarin\, Phys. At. Nucl. 81\, 486 (2018).\n4. V. I. Zagrebaev and V. V. Samarin\, Phys. At. Nucl. 70\, 1003 (2007).\n\nhttps://events.sinp.msu.ru/event/8/co ntributions/505/ LOCATION: Физический факультет\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/505/ END:VEVENT BEGIN:VEVENT SUMMARY:A NOVEL APPROACH FOR TAKING INTO ACCOUNT THE ZERO-POINT OSCILLATIO NS IN CALCULATING HEAVY-ION FUSION CROSS-SECTIONS DTSTART;VALUE=DATE-TIME:20220714T122000Z DTEND;VALUE=DATE-TIME:20220714T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-508@events.sinp.msu.ru DESCRIPTION:Speakers: Maria Chushnyakova (Omsk State Technical University) \nIt had been shown [1] that accounting for the zero-point oscillations (Z PO) of the shape of colliding complex nuclei results in increasing substan tially the calculated sub-barrier capture (fusion) cross-sections. Calcula tions in [1] was made in a simplified way with a schematic nucleus-nucleus potential.\nIn the present work we develop an advanced method for taking into account the ZPO of quadrupole mode for both collision partners. Withi n this method we evaluate the sub-barrier capture cross-sections for sever al reactions and compare the results with the experimental data. \n In our novel approach\, the nucleus-nucleus bare potential results from the s emi-microscopic double-folding model with M3Y-Paris nucleon-nucleon forces [2\,3]. For this aim\, we generalize the earlier published code [4]. In t his generalization\, we heavily rely on Ref. [5]. \nThe nucleon densities come from the Hartree-Fock-Bogoliubov calculations [6]. For each collision partner\, about 10 quadrupole deformations are accounted for with the app ropriate probabilities. The transmission coefficients are evaluated by mea ns of the WKB approximation below the barrier and using the single parabol ic barrier approximation above the barrier.\nNeglecting the ZPO typically results in the theoretical sub-barrier cross-sections to be below the data whereas accounting for the quadrupole ZPO often improves the situation.\n \n1. H. Esbensen\, Nucl. Phys. A 352\, 147 (1981).\n2. D. T. Khoa\, G. Sat chler\, W. von Oertzen\, Phys. Rev. C. 56\, 954 (1997)\n3. M. V. Chushnyak ova\, I. I. Gontchar\, Bull. Russ. Acad. Sci. Phys. 80 (2016) 938.\n4. I. I. Gontchar\, M. V. Chushnyakova\, Comp. Phys. Comm. 222\, 414 (2018).\n5. M. J. Rhoades-Brown\, V. E. Oberacker\, M. Seiwert\, and W. Greiner\, Zei tschrift Für Phys. A 310 (1983) 287.\n6. T. Belgya et al.\, IAEA-TECDOC-1 506 (2006). http://www-nds.iaea.org/RIPL-2/\n\nhttps://events.sinp.msu.ru/ event/8/contributions/508/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/508/ END:VEVENT BEGIN:VEVENT SUMMARY:Effect of double spin-orbit parameters on fusion barrier of prolat e-prolate deformed nuclei DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-510@events.sinp.msu.ru DESCRIPTION:Speakers: Rajni Mittal (Department of Physics\, SVNIT Surat Gu jarat)\nRelativistic mean-field model (RMF) and Skyrme Hartree fock (SHF) approach with effective energy functionals are applied to describe the bul k properties of nuclei. However\, SHF model with standard parametrization fails to address the charge isotope shifts in the vicinity of major shell closures [1]\, which on the other hand is well described by the RMF model calculations [2]. This contrariety is related to the peculiarity of the sp in-orbit (S-O) interaction potential (VJ) and hence corresponding modifica tions are required in SHF functional. In view of this\, a simple generaliz ation of the Skyrme functional is considered with a larger flexibility wit hin the spin-orbit term by means of an additional coefficient W0` term alo ng with W0. Subsequently\, six parameterizations of the Skyrme functional such as SkIx (x=1 to 5) [3] and SAMi [4] are obtained. In the present work \, out of six forces\, four different parameter sets are chosen such as SA Mi (W0=137\; W0` =42)\, SkI4 (W0=183.09\; W0` = -180.35)\, SkI3 (W0=94.25\ ; W0`=0) and SkI2 (W0=60.301\; W0` =60.301) and their effect in terms of d ouble spin-orbit strength is examined in the fusion dynamics of 90Zr+90-96 Zr reactions. The explicit dependence of deformation effect is incorporate d by taking prolate-prolate target-projectile combinations. The study is c arried out within the framework of Skyrme energy density formalism (SEDF) [5] by calculating the change in fusion barrier height (ΔVB=VB (with VJ)- VB (without VJ)) of considered reactions. It is observed that independent of the reaction channel\, maximum decrease in the fusion barrier height is obtained with SAMi force (having greater influence of S-O term) followed by SkI4\, SkI3 and minimum with SkI2 Skyrme force. Moreover\, the effect o f target deformation is such that the value of ΔVB is maximum for 90Zr+96 Zr reaction having strong deformation dependence (β2P=0.035\; β2T=0.217) and minimum for weakly deformed combination i.e.\, for 90Zr+90Zr channel (β2P=0.035\; β2T=0.035). This means that the double spin-orbit parameter s of the spin-orbit strength along with deformations of interacting nuclei significantly affect the fusion barrier height of considered reactions. I n further study the relative influence of these Skyrme forces will be anal ysed on fusion excitation functions and the results will be presented duri ng the conference. \nDr Rajni gratefully acknowledges the financial suppor t from the CSIR\, New Delhi\, India (file no. 09/1007(13391)/2022-EMR-I).\ n1. N. Tajima\, P. Bonche\, H. Flocard\, P.-H. Heenen\, and M.S. Weiss\, N ucl. Phys. A 551\, 434 (1993).\n2. M. M. Sharma\, M. A. Nagarajan\, and E. Ring\, Phys. Lett. B 312\, 209 (1993).\n3. P.-G. Reinhard and H. Flocard\ , Nucl. Phys. A 584\, 467-488 (1995).\n4. X. Rocka-Maza\, G. Colo\, and H. Sagawa\, Phys. Rev. C 86\, 031306 (R) (2012).\n5. Rajni\, D. Jain\, I. Sh arma\, and M. K. Sharma\, Eur. Phys. J A 53\, 208 (2017).\n\nhttps://event s.sinp.msu.ru/event/8/contributions/510/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/510/ END:VEVENT BEGIN:VEVENT SUMMARY:Baryon-antibaryon Asymmetry in p-p\, p-A collisions and String Jun ction Torus as Baryonium DM DTSTART;VALUE=DATE-TIME:20220713T122000Z DTEND;VALUE=DATE-TIME:20220713T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-507@events.sinp.msu.ru DESCRIPTION:Speakers: Olga Piskunova (P.N.Lebedev Physics Institute of RAS )\nThe asymmetry of baryon/antibaryon production has been measured in many proton-proton\, pion-proton and electron-proton experiments. In the frame work of Quark-Gluon String Model (QGSM) the energy dependence of asymmetry tells us about the value of $\\alpha_{SJ}$(0)\, the intercept of String J unction Regge trajectory. In previous QGSM study\, the value of intercept has been estimated as 0.5 < $\\alpha_{SJ}$(0) < 0.9. Here\, SJ behaviors a re accumulated in the model based on topological expansion in order to bui ld a neutral object with zero baryon charge. By the way\, QCD mass falling under the event horizon of Black Hole (BH) should be symmetric\, or in ot her words\, have no charge information. The baryon junctions are easily co mbinable with antibaryon ones in hexagons. Topologically\, hexagon net can coherently cover only the torus surface. The net on the torus has discret e number of baryon/antibaryon junctions. This is only parameter that marks the mass/energy level of this object. It looks like DM particle\, is not it? In high energy collisions at LHC\, such pomeron loops are to be produc ed approximately in 1.2 percent of inelastic events. Furthermore\, the tor us configurations of matter have been revealed in many bright events in sp ace. As an example\, Chandra experiment has detected such dense "doughnut" near the event horizon of Super Massive Black Hole (SMBH)\, which X-ray r adiation is screened on 40 percent's. This topological symmetry model of D M seems rather realistic and can help us to deal with an "arm wrestling" b etween the stiffness of toroid structure of QCD matter and the pressure of gravitational singularity at extremely heavy masses. On the other hand\, the instabilities in structure of matter in SMBHs can cause the bursts of giant relativistic hadron jets with the masses of order the own BH mass.\n \nhttps://events.sinp.msu.ru/event/8/contributions/507/ LOCATION: Физический ф-т\, ауд 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/507/ END:VEVENT BEGIN:VEVENT SUMMARY:CONTRIBUTION OF INDUCED DIPOLE INTERACTION TO THE ASYMPTOTIC BEHA VIOR OF WAVE FUNCTION COMPONENTS FOR THE SCATTERING IN THREE BODY COULOMB SYSTEMS DTSTART;VALUE=DATE-TIME:20220715T082000Z DTEND;VALUE=DATE-TIME:20220715T084000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-513@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Yakovlev (SPbGU)\nCONTRIBUTION OF INDUCED DI POLE INTERACTION TO THE ASYMPTOTIC BEHAVIOR OF WAVE FUNCTION COMPONENTS FO R THE SCATTERING IN THREE BODY COULOMB SYSTEMS\n\nV.A. Gradusov1\, S.L. Ya kovlev1\n1St Petersburg State University\, St Petersburg\, Russia\; \n E-m ail: s.yakovlev@spbu.ru\n \nWe consider the scattering of a charged partic le with a two-particle target system which is bound by the attractive Coul omb interaction. The Faddeev-Merkuriev set of equations is used for descri bing the scattering process [1\,2]. Although\, the leading contribution to the asymptotic form of the wave function and its components comes from t he asymptotic Coulomb interaction between the two-particle target and the spectator particle\, the next long-range terms of the multipole expansion of this interaction play important role in energy region where the excited state channels are open [3]. In this contribution we derive the explicit asymptotic representations for the wave function components which take int o account as the Coulomb as well as the induced dipole interactions betwee n the two-body target and the spectator particle. The general method from [4] is used for constructing asymptotic solutions. The derived asymptotics is then intended for the use in electron and positron scattering off the hydrogen atom and helium cation calculations in the energy regions above the thresholds of exited states of the targets where the induced dipole i nteraction produces specific effects in scattering data [4]. \n\n\n\n1. L.D. Faddeev and S.P. Merkuriev\, Quantum Scattering Theor y for Several Particle Systems\, Kluwer\, Dordrecht (1993).\n2. V.A. Gradu sov et al.\, JETP Letters 114\, No. 1\, 11 (2021)\n3. M. Gailitis\, J. Phy s. B: Atom. Mol. Phys. 9\, 843 (1976).\n4. S.L. Yakovlev\, Theor. Math. Ph ys. 203 (2)\, 664 (2020).\n5. V.A. Gradusov et al.\, J. Phys. B: At. Mol. Opt. Phys. 52\, 055202 (2019).\n\nhttps://events.sinp.msu.ru/event/8/contr ibutions/513/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/513/ END:VEVENT BEGIN:VEVENT SUMMARY:Evaluation of ΚΛ and ΚΣ0 electroproduction cross sections from the CLAS data DTSTART;VALUE=DATE-TIME:20220714T130000Z DTEND;VALUE=DATE-TIME:20220714T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-512@events.sinp.msu.ru DESCRIPTION:Speakers: Maksim Davydov (Moscow State University)\nThe method and computational tool will be presented for the evaluation of $Κ\\Lambd a$ and $Κ\\Sigma^0$ electroproduction cross sections from the experimenta l results on exclusive structure functions $\\frac{d\\sigma_T}{d\\Omega}$\ , $\\frac{d\\sigma_L}{d\\Omega}$\, $\\frac{d\\sigma_{LT}}{d\\Omega}$\, and $\\frac{d\\sigma_{TT}}{d\\Omega}$ available from the measurements with th e CLAS detector [2\,3] with numerical results stored in the CLAS physics d atabase [1]. The tool is capable to predict differential $Κ\\Lambda$ and $Κ\\Sigma^0$ cross sections within the kinematic area of the invariant ma ss of the final hadrons $W < 2.6$ GeV and at photon virtualities 0 GeV$^2$ < $Q^2$ < 5.0 GeV$^2$ from interpolated/extrapolated exclusive structure functions $\\frac{d\\sigma_T}{d\\Omega}$\, $\\frac{d\\sigma_L}{d\\Omega}$\ , $\\frac{d\\sigma_{LT}}{d\\Omega}$\, and $\\frac{d\\sigma_{TT}}{d\\Omega} $. For reliable interpolation of structure function at low $Q^2$\, the pho toproduction data on beam spin asymmetry $\\Sigma$ [4] were used. The deve loped approach provides evaluation of differential electroproduction cross section within mentioned above kinematics area entirely from the experime ntal data without any bias from reaction model assumptions. We implement s everal techniques for interpolation of the exclusive structure functions o ver kinematic variables $W$\, $Q^2$\, and the final kaon emission angle in the CM frame $\\cos(\\theta)$. In addition\, various extrapolation proced ures were implemented in the kinematic area where the experimental data ar e still not available or insufficient. Comparison with available data conf irmed credible evaluation of $Κ\\Lambda$ and $Κ\\Sigma^0$ differential c ross sections. The developed approach will be used for extraction of struc ture function from the first results on $Κ\\Lambda$ and $Κ\\Sigma^0$ bea m spin asymmetry data measured with the recently put in operation CLAS12 d etector at Jefferson Lab. The studies of $Κ\\Lambda$ and $Κ\\Sigma^0$ el ectroproduction channels will open the new avenue in exploration of the nu cleon resonance structure in the experiments of 12 GeV era at Jefferson La b in collaboration with Physics Department and Skobeltsyn Nuclear Physics Institute at Lomonosov Moscow State University. \n\n1. https://clas.sinp.m su.ru/cgi-bin/jlab/db.cgi\n2. P. Ambrozewicz et al. [CLAS Collaboration]\, Phys. Rev. C 75\, 045203 (2007).\n3. D.S. Carman et al. [CLAS Collaborati on]\, Phys. Rev. C 87\, №2\, 025204 (2013).\n4. M.E. McCracken et al. [C LAS Collaboration]\, Phys. Rev. C 81\, 025201 (2010).\n\nhttps://events.si np.msu.ru/event/8/contributions/512/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/512/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF EXCITED STATES IN ATOMIC NUCLEI 46Ti AND 45Ti IN REACTION S WITH 3He BEAM AT 29 MeV DTSTART;VALUE=DATE-TIME:20220712T095000Z DTEND;VALUE=DATE-TIME:20220712T101000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-515@events.sinp.msu.ru DESCRIPTION:Speakers: Nikolay Skobelev ()\nThe results of measurements of the angular distributions of deuterons in the 45Sc(3He\, d)46Ti reaction a re presented\, from which the cross sections for population of the ground and excited states in the 46Ti nucleus were determined [1]. The energy of the bombarding 3He particles was 29 MeV.\nThe measured angular distributi ons for the excited states in the 46Ti nuclei are compared with the result s of other measurements at several values of 3He energy. A comparison of t he angular distributions for the ground and excited states of 46Ti with DW BA calculations showed that the pickup of a proton from 3He to the target nucleus mainly results in transfer of 3 or 1 units of angular momentum\, w hich corresponds to the population of 1f7/2 and 2p3/2 shells\, respectivel y. It was shown that rearrangement of nucleons in the unfilled 1f7/2 and 2 p3/2 shells leads to excitation of both collective and particle-hole state s with different angular momenta. The energy spectra of 46Ti obtained in t he experiment were analyzed within the framework of the dinuclear system m odel [2]. \nFor the 45Sc(3He\, t)45Ti reaction\, the spectrum of excited s tates of 45Ti was measured for the first time [3]. Significantly fewer ex cited states in the resulting 45Ti nucleus are populated compared to 46Ti\ ; moreover\, mainly low-lying single-particle states are populated.\nThe e xperiments were carried out at the accelerator of the Institute of Nuclear Physics\, Řež\, Czech Republic.\n1. N. K. Skobelev\, Yu. E. Penionzhkev ich\, V. Burjan\, and J. Mrázek\, Bulletin of the Russian Academy of Scie nces: Physics 84\, 425 (2020).\n2. T.M.Shneidman\, G.G.Adamian\, N.V.Anton enko\, R.V.Jolos\, S.-G.Zhou\, Phys.Rev. C 92\, 034302 (2015).\n3. N. K. S kobelev\, Yu. E. Penionzhkevich\, I. Siváček\, T. Issatayev et al.\, Phy sics of Particles and Nuclei 53\, 382 (2022).\n\nhttps://events.sinp.msu.r u/event/8/contributions/515/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/515/ END:VEVENT BEGIN:VEVENT SUMMARY:Probing the hot QCD matter via quarkonia at the next-generation he avy-ion experiment at LHC DTSTART;VALUE=DATE-TIME:20220712T101000Z DTEND;VALUE=DATE-TIME:20220712T103000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-516@events.sinp.msu.ru DESCRIPTION:Speakers: Yuri Kharlov (Institute for High Energy Physics of N RC Kurchatov Institute (RU))\nQuarkonia represent one of the most valuable probes of the deconfined quark-gluon hot medium since the very first expe rimental studies with ultrarelativistic heavy-ion collisions. A significan t step forward in characterizing the QCD matter via systematic studies of quarkonia production will be performed by the next-generation heavy-ion ex periment ALICE 3 [1]\, a successor of the ongoing ALICE experiment at the Large Hadron Collider. The new advanced detector of ALICE 3 will allow for exploring production of S- and P-state quarkonia at high statistics at lo w and moderate transverse momenta range. Performance of the ALICE 3 for qu arkonia measurements and requirements for the detectors will be discussed in the talk.\n\n1. ALICE Collaboration\, Letter of intent for ALICE 3: A n ext-generation heavy-ion experiment at the LHC. CERN-LHCC-2022-009\, LHCC- I-038\n\nhttps://events.sinp.msu.ru/event/8/contributions/516/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/516/ END:VEVENT BEGIN:VEVENT SUMMARY:Construction Management Information System at JINR DTSTART;VALUE=DATE-TIME:20220715T101000Z DTEND;VALUE=DATE-TIME:20220715T103000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-519@events.sinp.msu.ru DESCRIPTION:Speakers: Cesar Ceballos Sanchez (JINR)\nEarlier this year the commissioning of an all-around Construction Management information System (CMIS) was completed as a joint effort of two JINR Laboratories (LHEP and LIT). The system is particularly useful for the fine-grained control and continuous feedback of the production of complex multipart objects like t he detectors subsystems composing the MultiPurpose Detector of the NICA fa cility at LHEP. The structure and functonalities of CMIS at JINR are based on a previous system developed by Kybernetika s.r.o.(Slovak Republic) for the upgrade of the Inner Tracking System of the ALICE experiment at CERN and was reconfigured to be transferred and deployed on the available comp utational platform of JINR in a joint effort by specialists from Kyberneti ka and JINR's LIT and LHEP. The system is composed of a web user interface and a collection of web-accessible API functions that are connected to an Oracle database. The CMIS may hold several projects at the same time and for each of them it allows to control several aspects of the production pr ocess including (but is not limited to) the human resources\, the project organization and planning\, as well as the current status and tests result s history of every component of the detector consenting for the direct int erfacing of the assembly and testing hardware/software to the construction database\, so that information ranging from the current location of a com ponent in-transit to/from an assembly site down to the final position of a single chip inside the detector may be tracked down and recorded.\nCurren tly\, the CMIS is meant to be used to follow the production of silicon tra cker detectors at the STS department of the LHEP at JINR but since it is c entrally hosted at LIT it might be also used by other hardware production projects at JINR (or outside) whose complexity would make it very hard to fulfilling its quality and timing requirements otherwise.\nIn this present ation a general overview of the full system will be given along with a foc using on the modules that allow specifically for the control of the produc tion and assembly of the hardware to be produced. It will also include rea l examples of custom cross-platform user interfaces developed for the easy use of the system by the operators.\n\nhttps://events.sinp.msu.ru/event/8 /contributions/519/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/519/ END:VEVENT BEGIN:VEVENT SUMMARY:REFERENCE FIELDS FORMED AT THE DOSIMETRIC BETA-RADIATION FACILITY DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-518@events.sinp.msu.ru DESCRIPTION:Speakers: Руслан Титков ()\nTo reproduce absorbed dose units\, directional and individual dose equivalents of beta radiation in tissue-equivalent matter\, and to transfer the obtained units to worki ng standards and dosimeters of beta radiation\, beta radiation dosimetry u nits are used\, which form the reference fields from radionuclide beta rad iation sources.\n\nhttps://events.sinp.msu.ru/event/8/contributions/518/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/518/ END:VEVENT BEGIN:VEVENT SUMMARY:TRITIUM LABEL IN STUDYING PROTEIN-LIGAND INTERACTION: SELF-ORGANIZ ATION AT THE INTERFACES DTSTART;VALUE=DATE-TIME:20220713T145000Z DTEND;VALUE=DATE-TIME:20220713T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-517@events.sinp.msu.ru DESCRIPTION:Speakers: Maria Chernysheva (Lomonosov Moscow State University )\nTritium is the only radioactive isotope of hydrogen and it is an approp riate radiolabel for organic molecules including surfactants\, peptides\, proteins and etc. Moreover\, tritium as a tracer can be also used for anal ysis of protein-ligand complex formation at the interfaces\, including liq uid-liquid system that is a model of cellular membrane. In the present stu dy we developed a novel approach to the study complexes formation between protein and organic ligand at the interfaces as well as in the bulk of the solution. We used lysozyme as a model protein and as an enzyme of medical purpose. Surfactants\, including ionic and non-ionic\, low and high molec ular weight substances and even humic substances\, were considered as a li gand.\nThe procedure of analysis of protein-ligand intermolecular interact ions includes two important radiochemical stages. First\, studying adsorpt ion of both protein and ligand at the liquid-liquid interface by means of tritium labeled compounds and liquid scintillation spectrometry as a scint illation phase technique [1]. To this end both protein and organic ligand required to be labeled with tritium and we used tritium thermal activation method for radiolabeling [2].\nThe second radiochemical study includes th e bombardment of the protein-ligand mixed adsorption layer with tritium at oms following by the analysis of tritium distribution in the components of the target. In the case of protein\, it was subjected to total hydrolysis and determination of the specific radioactivity of each amino acid. On th e bases of lysozyme structure phenylalanine and proline were chosen as ref erence amino acid residues for determining protein orientation in the mixe d adsorption layer that was done for the adsorption layers with ionic and non-ionic surfactants.\nThe developed approach allowed us to reveal the en capsulation of lysozyme with humic substances and in conjunction with clas sical methods of protein structure analysis to describe completely lysozym e-surfactant complexes. The main results obtained with tritium labeled lys ozyme\, cationic\, anionic and non-ionic surfactants\, and humic substance s will be discussed in the presentation.\n\n1. M.G. Chernysheva\, G.A. Bad un\, Langmuir. 27\, 2188 (2011).\n2. G.A. Badun\, M.G. Chernysheva\, A.L. Ksenofontov\, Radiochimica Acta. 100\, 401 (2012).\n\nhttps://events.sinp. msu.ru/event/8/contributions/517/ LOCATION: Физический ф-т\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/517/ END:VEVENT BEGIN:VEVENT SUMMARY:DEUTERON BEAM VECTOR POLARIZATION MEASUREMENT USING PROTON-PROTON QUASIELASTIC SCATTERING AT THE ENERGIES FROM 200 TO 650 MEV/NUCLEON DTSTART;VALUE=DATE-TIME:20220715T095000Z DTEND;VALUE=DATE-TIME:20220715T101000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-522@events.sinp.msu.ru DESCRIPTION:Speakers: Ivan Volkov (LHEP JINR)\nThe deuteron beam vector po larization was obtained at the Nuclotron Internal Target Station using qua sielastic proton-proton scattering on the polyethylene target. The select ion of useful events was performed using the time and amplitude informatio n from scintillation counters. The asymmetry on hydrogen was obtained by t he subtraction of the carbon background. The values of vector polarization were obtained at the beam energies of 200\, 500\, 550\, and 650 MeV/nucle on. The obtained values are compared with the data obtained in the deutero n-proton elastic scattering at the beam energy of 135 MeV/nucleon.\n\nhttp s://events.sinp.msu.ru/event/8/contributions/522/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/522/ END:VEVENT BEGIN:VEVENT SUMMARY:Compton X-ray source based on 50-MeV accelerator and its applicati ons DTSTART;VALUE=DATE-TIME:20220715T072000Z DTEND;VALUE=DATE-TIME:20220715T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-521@events.sinp.msu.ru DESCRIPTION:Speakers: Igor Artyukov (Lebedev Physical Institute RAS)\nLase r-electron X-ray source based on inverse Compton (Thomson) scattering is a novel type of high spectral brightness X-ray sources. The state-of-the-ar t design of electron accelerators and high power lasers had paved the way for a construction of these compact facilities that are able to produce a nearly synchrotron-quality X-ray radiation for material and life science s tudies and many other fields [1\, 2]. The essential added values are the g eneration of picosecond X-ray pulses and tunable output photon energy spec trum with a potential extension towards the region of gamma radiation.\n\n The presentation deals with the main principles\, layouts and possible app lications of Compton X-ray sources based on a 50-MeV electron accelerator specified for production of X-ray photons with the energy of 20-45 keV. Th e design options include a utilization of an electron storage ring for hig h average photon flux generation[3].\n\n1. I .A. Artyukov\, E.G. Bessonov\ , M. V. Gorbunkov\, Y. Y. Maslova\, N. L. Popov\, and A. V. Vinogradov\, Laser and Particle Beams 34\, 637 (2016).\n2. I. A.Artyukov\, E. G. Besson ov\, R. M. Feshchenko\, M.V.Gorbunkov\, Yu. Ya. Maslova\, N.L Popov\, N.V. Dyachkov\, A A Postnov\, S.L. Vinogradov and A.V.Vinogradov\, Journal of P hysics: Conference Series 784\, 012002 (2017).\n3. L. Ovchinnikova\, V. Sh vedunov\, A. Mikhailichenko\, E. Bessonov and M. Gorbunkov\, A comparativ e study of low energy compact storage rings for a Thomson scattering X-ray source. In 7th Int. Particle Accelerator Conf.(IPAC'16)\, Busan\, Korea\, May 8-13\, 2016.\n\nhttps://events.sinp.msu.ru/event/8/contributions/521/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/521/ END:VEVENT BEGIN:VEVENT SUMMARY:APPLICATION OF SRI2(EU) CRYSTAL IN PROBLEMS OF GAMMA-RADIATION SPE CTROMETRY DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-523@events.sinp.msu.ru DESCRIPTION:Speakers: Damian Komar ()\nAPPLICATION OF SRI2(EU) CRYSTAL IN PROBLEMS OF GAMMA-RADIATION SPECTROMETRY\nD. I. Komar\, I. A. Lagutskiy\, A. V. Antonov\, V. I. Antonov\nATOMTEX SPE\, Minsk\, Belarus\nE-mail: info @atomtex.by\n\nAccording to the requirements of international standards\, the energy resolution of spectrometric equipment for radiation monitoring systems should be less than 4.5%. The Rosenergoatom standard STO 1.1.1.01. 001.0875-2017 requires a spectrometric detection unit with a resolution of not above 4.5% for 137Cs radionuclide to be used at the radiation monitor ing station ASCRO. Also\, the ANSI N42.34-2015 standard introduces a requi rement for the energy resolution of the spectrometric channel of radionucl ide composition identifiers to be no more than 4%.\nATOMTEX SPE has develo ped a spectrometric detection unit based on the SrI2(Eu) scintillation det ector with dimensions Ø38×38 mm. According to the results of the spectro metric studies of the detection unit\, the typical resolution was 3.3% for the 662 keV line of the 137Cs radionuclide.\nTo minimize the influence of external factors on the characteristics of the spectrometric path\, class ical LED stabilization is used. To correct superimposed pulses from the AD C\, pulse superposition rejection is used.\n\nhttps://events.sinp.msu.ru/e vent/8/contributions/523/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/523/ END:VEVENT BEGIN:VEVENT SUMMARY:SYLA – RUSSIAN 4TH GENERATION SYNCHROTRON DTSTART;VALUE=DATE-TIME:20220713T122000Z DTEND;VALUE=DATE-TIME:20220713T124000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-524@events.sinp.msu.ru DESCRIPTION:Speakers: Vyacheslav Dyubkov (NRNU MEPhI\, NRC KI)\nFor more t han 40 years synchrotron-based x-ray sources as well as free-electron lase rs based on linear accelerators have been widely used in materials science \, spectroscopy\, crystallography\, research of fast processes\, medicine\ , molecular biology and biochemistry\, medicine\, and other applied and sc ientific tasks. Nowadays state-of-art technologies make it possible to des ign and develop specialized synchrotron that is especially aimed to genera te SR by means of insertion devises\, such as ondulators or wigglers. Such specialized circular electron accelerators have been called SR sources of the 4th generation. Currently\, there are already several operating [1-3] and a number of such specialized SR sources are under design [4-6]. A num ber of 3rd generation light sources are under modernization up to 4th gene ration nowdaus. In order to advance the development of the research infras tructure of the Russian Federation\, by Decree of the President of the Rus sian Federation No. 356 of 25.06.2019\, a storage synchrotron (the 4th gen eration SR source) with an energy of 6 GeV and an equilibrium value of the horizontal emittance of the electron beam of no more than 70 pm∙rad (SY LA\, former USSR4) is being developed on the basis of NRC KI [7\,8]. This paper presents the results of the development of the machine lattice as we ll as top-up linac injector.\n\n1. MAX IV Facility Detailed Design Report / https://www.maxiv.lu.se/\n2. EBS Storage Ring Technical Report / https:/ /www.esrf.eu/\n3. L. Liu\, R. T. Neuenschwander and A. R. D. Rodrigues\, S ynchrotron radiation sources in Brazil / .Phil. Trans. R. Soc. A 377: 2018 0235 (2019).\n4. I. Agapov et al. PETRA IV: the ultralow-emittance source project at DESY / J. Synchrotron Rad. (2018). 25\, 1277–1290.\n5. M. Bor land et al.\, Hybrid seven-bend-achromat lattice for the Advanced Photon S ource Upgrade / Proceedings of 2015 IPAC\, pp. 1776–1779.\n6. HEPS Xu G. \, Cui X.H.\, Duan Z.\, Guo. Y.Y. / Proceedings of International particle accelerator conference. – Denmark\, 2017 – P. 2697 – 2699.\n7. S. Li uzzo et al.\, USSR HMBA Storage Ring Lattice Options // 12th IPAC\, May 20 21\, Online\, Brazil. TUPAB049.\n8. L. Hoummi et al.\, Optimization and Er ror Studies for the USSR HMBA Lattice // 12th IPAC\, May 2021\, Online\, B razil. MOPAB224.\n\nhttps://events.sinp.msu.ru/event/8/contributions/524/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/524/ END:VEVENT BEGIN:VEVENT SUMMARY:iDREAM detector today DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-525@events.sinp.msu.ru DESCRIPTION:Speakers: andrei konstantinov ()\nThe industrial idream detect or was installed at Unit 3 of Kalinin NPP in spring 2021. Data collection had been going on since last spring and after 4-month break since last nov ember\, we has continued data collection this spring\, evaluated liquid sc intillator stability\, background conditions\, and would like tell about t he first plans to upgrade the detector in the future\n\nhttps://events.sin p.msu.ru/event/8/contributions/525/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/525/ END:VEVENT BEGIN:VEVENT SUMMARY:HYDROGEN ISOTOPES PRODUCTION UNDER (pi-)- MESON ABSORPTION IN SIL ICON “LIVE” TAGET DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-527@events.sinp.msu.ru DESCRIPTION:Speakers: Boris Chernyshev (National Research Nuclear Universi ty “MEPhI)\nThe results of the analysis of the outputs p\, d\, t formed under the absorption of stopped π-mesons by silicon nuclei are presented . The measurements were performed using a "live" target - Si detector (ana log of the 28Si target). For the 28Si nucleus\, the spectrum of primary pr otons was obtained from the absorption act on the pp pair when both partic les (n and p) are not distorted by secondary interactions. It is shown tha t the data on proton yield do not contradict the assumption that the ratio of widths of elementary pion absorption processes on pn and pp pairs (R ’ = 3.5) is constant. "Direct"\, without excitation\, mechanisms of form ation of deuterons and tritons on silicon were found\, and their yields we re estimated at a level ≥ 30%. This result makes it possible to test mod els of the formation of complex particles associated with the excitation o f nuclei.\n\nhttps://events.sinp.msu.ru/event/8/contributions/527/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/527/ END:VEVENT BEGIN:VEVENT SUMMARY:DESCRIPTION OF CHARGE-EXCHANGE REACTIONS IN TIME-DEPENDENT 2D MODE L DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-528@events.sinp.msu.ru DESCRIPTION:Speakers: Viacheslav Samarin (Joint Institute for Nuclear Rese arch)\nThe experimental data on the charge-exchange reactions ${}^{45}$Sc( ${}^{3}$He\,t)${}^{45}$Ti\, ${}^{194}$Pt(${}^{3}$He\,t)${}^{194}$Au [1\, 2 ] requires development of microscopic models of such processes. The micros copic approach based on the time-dependent Schrödinger equation for the w ave function of the independent nucleons [3] does not take into account pr oton-neutron interaction and correlations. Simultaneous transfer of a prot on from the projectile nucleus to the target nucleus and transfer of a neu tron in the backward direction is studied using quantum two-body two-dimen sional (2D) time-dependent model [4].\n\n\n1. N.K. Skobelev\, A.A. Kulko\, Yu.E. Penionzhkevich\, E.I. Voskoboynik\, V. Kroha\, V. Burjan\, Z. Hons\ , J. Mrazek\, Š. Piskoř\, and E. Šimečkova\, Bull. Russ. Acad. Sci.: P hys. 77\, 795 (2013).\n2. N.K. Skobelev\, Yu.E. Penionzhkevich\, E.I. Vosk oboinik\, V. Kroha\, V. Burjan\, Z. Hons\, J. Mrazek\, Š. Piskoř\, E. Š imečkova\, and A. Kugler\, Phys. Part. Nucl. Lett. 11\, 114 (2014).\n3. V .V. Samarin\, Yu.E. Penionzhkevich\, M.A. Naumenko\, and N.K. Skobelev\, B ull. Russ. Acad. Sci.: Phys. 82\, 637 (2018).\n4. V.V. Samarin\, and S.M. Samarina\, Surface Investigation 14\, 621 (1998).\n\nhttps://events.sinp.m su.ru/event/8/contributions/528/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/528/ END:VEVENT BEGIN:VEVENT SUMMARY:Non-destructive measurement of detailed transverse beam distributi on with the use of an ionization monitor DTSTART;VALUE=DATE-TIME:20220715T141000Z DTEND;VALUE=DATE-TIME:20220715T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-530@events.sinp.msu.ru DESCRIPTION:Speakers: Konstantin Timoshenko (JINR)\nThe constant monitorin g of the uniformity of the density distribution of the flux of the acceler ated particles is required in various applied fields as such as the studie s of biological objects and of radiation resistance of electronic devices. The ionization monitor has been developed at FLNR JINR in order to make t he non-destructive detailed high precision measurement of the transverse p rofile of a wide beam of accelerated particles. The monitor design is aime d at measuring the concentration of residual gas ions arising along on the beam path. The distribution of the ions is proportional to the distributi on of the particle flux density. The ions are extracted from the beam regi on by a constant electric field larger than 0.2 kV/cm and then are acceler ated by a sawtooth voltage with a frequency of 2 Hz. During the extraction the ions get the kinetic energy proportional to the distance traveled in a constant field and to the value of the subsequent accelerating voltage. The extracted ions enter two consecutive electrostatic analyzers separated by a plate with 1 mm slit. Ions can enter the second analyzer through thi s slit only if they were created in a narrow beam region\, which position depends on the value of the sawtooth voltage. The monitor sensitivity is i ncreased by MCP (Micro channel plate) placed after the analyzers. The coll ector divided into 31 strips is located after the MCP. The current from th e strips is digitized by several ADC (Analog to digital converter) channel s. The first coordinate of the ion formation position is determined by the number of the collector strip. The second coordinated is extracted from t he value of the sawtooth voltage measured by another ADC. The number of em ployed ADCs allows every second measurement of a detailed two-dimensional distribution with 31x31 points on a beam cross section up to 45 mm in diam eter. Because the ions of the residual gas are collected from the beam pat h 90 mm long\, the sensitivity of the monitor is almost two orders of magn itude higher than the existing analogs [1\, 2]. The monitor can also be us ed to measure the profile of secondary beams.\n\nhttps://events.sinp.msu.r u/event/8/contributions/530/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/530/ END:VEVENT BEGIN:VEVENT SUMMARY:MPD prospects for the study of hadron and (hyper)nuclei production at NICA energies DTSTART;VALUE=DATE-TIME:20220715T080000Z DTEND;VALUE=DATE-TIME:20220715T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-540@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Mudrokh (JINR)\nMPD prospects for the stud y of hadron and (hyper)nuclei production at NICA energies\n\nA. A. Mudrokh for the MPD Collaboration\n1 Joint Institute for Nuclear Research\, Dubna \, Russia\n E-mail: mudrokh@jinr.ru \n\nThe MultiPurpose Detector (MPD) [1 ] is constructed to study strongly interacting matter at the NICA accelera tor complex [2]. In this report\, we present the main NICA physics goals and the concept of the MPD detector with an emphasis to the detector perfo rmance for the measurements of hadron observables (yields and ratios) as w ell as reconstruction of (hyper)nuclei.\n\n\n1. Ch. U. Abraamyan et al. (M PD Collab.)\, Nucl. Instrum. Methods Phys. Res.\, Sect. A 628\, 99 (2011)\ n2. V. Kekelidze\, R. Lednicky\, V. Matveev\, et al.\, Eur. Phys. J. A 52\ , 211 (2016)\n\nhttps://events.sinp.msu.ru/event/8/contributions/540/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/540/ END:VEVENT BEGIN:VEVENT SUMMARY:DIFFERENTIAL CROSS-SECTIONS FOR ELASTIC BACKSCATTERING OF ALPHA PA RTICLES BY CARBON DTSTART;VALUE=DATE-TIME:20220715T145000Z DTEND;VALUE=DATE-TIME:20220715T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-532@events.sinp.msu.ru DESCRIPTION:Speakers: Timofey Bobrovskii ()\nDifferential cross-sections f or 12C(a\,a0)12C scattering have been measured at the 150° and 170° angl es for alpha beam energies ranging from 3.5 to 6.5 MeV. At alpha beam ener gies greater than ~2.2 MeV the 12C(a\,a0)12C cross-section is non-Rutherfo rd. For ion beam analysis of carbon\, enhanced cross-sections at elevated energies provide increased sensitivity and separation of the partial spect rum of carbon against the background of heavier elements. To accurately de termine the carbon content requires the use of precise cross sections at t he energy and backscattering angle of interest. Since apparent discrepanci es between different sets of available experimental data result in signifi cant uncertainties in the evaluated 12C(a\,a0)12C cross-sections [1] new m easurements were undertaken followed by a revision of the current evaluati on [2]. \nMeasurements were carried out at the 3 MV tandem accelerator of IPPE with an energy step of 5–10 keV. A polished pyrolylitic graphite bu lk target of a natural isotopic abundance was used in the experiment in or der to avoid problems with carbon build up. The backscattering cross-secti ons were obtained from the measured spectra by fitting in a narrow energy window near the high energy edge of the spectrum\, the cross-section being a free parameter. Fitting was performed by the COBYLA method [3] using th e OLE automation technique provided by the SIMNRA-7 program [4]. The obtai ned results were incorporated in the data set for the cross-section evalua tion performed in the framework of the R-matrix theory.\n \n1. E.V. Gai\, A.F. Gurbich\, Nucl. Instr. Meth. B296\, 87 (2013).\n2. A.F. Gurbich\, Nuc l. Instr. Meth. B371\, 27 (2016).\n3. M.J.D. Powell\, Cambridge University Technical Report DAMTP 2007.\n4. M. Mayer\, SIMNRA User`s guide. Tech. re p. IPP 9/113. Garching: Max-Planck-Institute fur Plasmaphysik\, 1997.\n\n https://events.sinp.msu.ru/event/8/contributions/532/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/532/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of multinucleon transfers in reactions with 48Ca ions on Au\ , U targets at an energy of 280 MeV DTSTART;VALUE=DATE-TIME:20220715T130000Z DTEND;VALUE=DATE-TIME:20220715T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-531@events.sinp.msu.ru DESCRIPTION:Speakers: Aleksei Shakhov (JINR)\nRecently\, there has been in creased interest in experimental studies on the production of new isotopes in multinucleon transfer reactions [1\,2]. Reactions on 48Ca ion beams ar e successfully used for the synthesis of new nuclei in a wide range of mas ses and charges. In particular\, it is of interest to obtain new isotopes with the number of neutrons N = 126 in the reaction channels of multinucle on transfers [3]. To estimate the cross sections for the formation of nucl ei in these reactions\, we conducted an experiment on their detection. In the experiment\, nuclei with masses greater than the target mass values we re measured. \nThe experiment was carried out on a 48Ca (5\,8 MeV/nucleon) ion beam using 197Au (6 µm thick) and 238U (1 µm thick) targets. Specia lly prepared targets were irradiated on a beam of accelerated ions\, on a cyclotron U-400 at the FLNR JINR. The activation method was used to identi fy the nuclei formed in the reactions. Measurement of induced activity (ga mma and alpha) was carried out in the “off-linе” mode. \nIn the react ion of 48Ca+Au\, neutron pickup channels for 1n and 3n were measured. The cross sections of these channels were σ (+1n) - 150 mb and σ (+3n) – 0 .5 mb\, respectively. The GRAZING [4] code used to analyze the obtained va lues gives a good agreement with the experimental results.\nIn the 48Ca+Au reaction induced alpha activity of 206Po nuclei was observed\, which corr esponds to the transmission channel (+5p+9n) from the projectile nucleus t o the target nucleus.\nThe 48Ca+U reaction products were measured using an alpha spectrometer. Among the products\, the nuclei 228Th\, 239Am\, 255Fm were identified by the measured half-lives and characteristic energies of alpha particles. These products correspond to the following channels 238U (-2p-8n) → 228Th\, 238U(+3p-2n) → 239Am\, 238U(+8p-+9n) → 255Fm. The value of the section of these channels σ(228Th) ~ 55 μb\, σ(239Am) ~ 1 .2 μb\, σ(255Fm) ~ 2.2 μb.\nThus\, the cross section data show that suc h reactions are suitable for obtaining nuclei of multinucleon transfers. F urther analysis of the obtained data is underway.\n\nhttps://events.sinp.m su.ru/event/8/contributions/531/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/531/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of the 242Pu + 48Ca and 238U + 48Ca reactions at DGFRS-II DTSTART;VALUE=DATE-TIME:20220712T082000Z DTEND;VALUE=DATE-TIME:20220712T084000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-533@events.sinp.msu.ru DESCRIPTION:Speakers: Dastan Ibadullayev (1. FLNR\, JINR. 2. Institute of Nuclear Physics\, Almaty)\nThis work presents the results of the experime nts performed at the FLNR\, JINR Superheavy Element Factory (SHE Factory). The experiments were carried out on the basis of the new cyclotron DC-280 with an intensity of accelerated particles of up to 10 pµA [1] and gas f illed separator DGFRS-2 [2] and were aimed at study of the $^{242}$Pu+$^{4 8}$Ca and $^{238}$U+$^{48}$Ca reactions. The main goal of this experiments consisted in determining the capabilities of the SHE Factory for the prod uction and study of new isotopes of known superheavy elements up to Og(Z=1 18)\, as well as the synthesis of new ones with Z>118.\nThe decay properti es of $^{286}$Fl and $^{287}$Fl\, as well as their α-decay products\, hav e been updated from 25 and 69 new decay chains\, respectively. Additionall y\, 16 decay chains of $^{283}$Cn were observed in the $^{238}$U+$^{48}$Ca reaction. During the experiment\, the maximum intensity of the $^{48}$Ca ion beam was 6.5 pµA. The stability of the target was measured at such hi gh intensities. Possibility of existing of isomeric states in the $^{287}$ Fl consecutive α decays is discussed. A new α line with energy of 100-20 0 keV lower than the main one at 10.19 MeV was observed for the first time for even-even $^{286}$Fl. The maximum cross section of 10.4$^{+3.5}_{-2.1 }$) pb was measured for the $^{242}$Pu($^{48}$Ca\,3n)$^{287}$Fl reaction.\ n\n1. G.G. Gulbekian S.N. Dmitriev\, M.G. Itkis\, Yu.Ts. Oganessyan\, B.N. Gikal et. al. Start-Up of the DC-280 Cyclotron\, the Basic Facility of th e Factory of Superheavy Elements of the Laboratory of Nuclear Reactions at the Joint Institute for Nuclear Research. // Phys. Part. Nucl. Lett. 16\, 866 (2019).\n2. Yu.Ts. Oganessian\, V.K. Utyonkov et al. DGFRS-2 - a gas- filled recoil separator for the Dubna Superheavy Element Factory. // Nucle ar Instruments and Methods in Physics Research (submitted).\n\nhttps://eve nts.sinp.msu.ru/event/8/contributions/533/ LOCATION: Физический факультет\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/533/ END:VEVENT BEGIN:VEVENT SUMMARY:ADSORPTION MODIFICATION OF NANODIAMONDS WITH TRITIUM-LABELED CATIO NIC SURFACTANTS AND POLYSACCHARIDES DTSTART;VALUE=DATE-TIME:20220713T143000Z DTEND;VALUE=DATE-TIME:20220713T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-535@events.sinp.msu.ru DESCRIPTION:Speakers: Artem Sinolits (Lomonosov MSU)\nThe radiotracer meth od is a powerful instrument for studying different physico-chemical proces ses for example adsorption. Using radiotracer technique allows to quantify tritium-labeled substances up to 10-14 mol. Tritium thermal activation te chnique allows protium substitution with tritium in almost any organic com pound without significant changes in its chemical structure [1]. Nanodiamo nds modified with biopolymers and antiseptic drugs are prospective modifie rs of biocompatible materials [2].\nWe developed method of obtaining of tr itium-labeled hyaluronic acid by tritium thermal activation with specific radioactivity of 52 GBq/g with preserved molecular mass distribution [3]. Method included unlabeled hyaluronic acid dialysis through membrane\, hyal uronic acid lyophilization and tritium incorporation by thermal activation . The labeled hyaluronic acid was purified by dialysis that was being cont rolled by high-performance liquid chromatography.\nWith use of radiotracer technique with tritium-labeled compounds (alkyltrimethylammonium bromides \, miramistin\, chitosan\, hyaluronic acid) we studied their adsorption on detonation nanodiamonds. We proposed mechanisms of formation of nanodiamo nd-sorbate complexes with different electrokinetic potential in water susp ensions.\nThe double and triple complexes of nanodiamond with different so rbates under investigation are prospective for biomedical applications. Fo r this purpose\, the sorbates retention on nanodiamond was studied in diff erent media including biological-alike media. Using tritium-labeled compou nds allowed confident quantification of substances desorbed from nanodiamo nds surface and substances adsorbed on nanodiamond surface even in biologi cal-alike media.\nComplexes nanodiamond-miramistin-chitosan and nanodiamon d-miramistin-hyaluronic acid were obtained and characterized for the first time.\n\n1. Badun G.A. Chernysheva M.G.\, Ksenofontov A.L. Radiochim. Act a. 100\, 401 (2012).\n2. Chernysheva M.G. et al. Fullerenes Nanotubes and Carbon Nanostructures. 28(4)\, 256 (2020).\n3. Chernysheva M.G. et al. Col loids Surfaces A: Physicochem. Eng. Asp. 565\, 25 (2019).\n\nhttps://event s.sinp.msu.ru/event/8/contributions/535/ LOCATION: Физический ф-т\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/535/ END:VEVENT BEGIN:VEVENT SUMMARY:Searches for new physics with ultra-peripheral collisions at the L HC DTSTART;VALUE=DATE-TIME:20220712T095000Z DTEND;VALUE=DATE-TIME:20220712T101000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-534@events.sinp.msu.ru DESCRIPTION:Speakers: Nazar Burmasov (Petersburg Nuclear Physics Institute )\nUltra-peripheral collisions of heavy ions (UPCs) give a unique opportun ity for studies of two-photon interactions in an environment with suppress ed hadronic processes and enhanced electromagnetic interactions. Specifica lly\, studies of light-by-light scattering process (LbyL) can provide a ne w insight on axion-like particles (ALPs) production\, which emerge in a nu mber of Standard Model extensions and are proposed as dark matter candidat es. LbyL was measured by the ATLAS and CMS collaborations in the mass regi on above 5 GeV/$c^2$\, and there is a possibility for the new ALICE 3 expe riment to cover the low mass region\, that could possibly explain muon $g- 2$ discrepancy observed at the Fermilab.\n\nPrecise measurements of the an omalous magnetic moments of leptons can be used to probe effects of physic s beyond the Standard Model (BSM)\, such as production of supersymmetric p articles or composite nature of leptons. Sensitivity to BSM physics of the anomalous magnetic moment of the $\\tau$-lepton is predicted to be $\\sim $280 times higher than that of the muon\, but the short lifetime makes it impossible to use conventional measurement methods. UPCs are proposed as a n alternative tool\, as cross sections of $\\tau$ production are sensitive to the anomalous magnetic moment.\n\nIn this contribution\, the prospects of LbyL measurements\, ALP searches and tau g-2 studies with ultra-periph eral collisions at the LHC will be discussed.\n\nhttps://events.sinp.msu.r u/event/8/contributions/534/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/534/ END:VEVENT BEGIN:VEVENT SUMMARY:The investigation in non-statistical mechanisms of photonuclear em ission of charged particles on molybdenum DTSTART;VALUE=DATE-TIME:20220713T141000Z DTEND;VALUE=DATE-TIME:20220713T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-536@events.sinp.msu.ru DESCRIPTION:Speakers: Pavel Remizov (MSU)\nIt is generally accepted that p hotonuclear reactions caused by photons occur in two stages in region of g iant dipole resonance (GDR): the excitation of the nucleus as a system and its decay according to statistical laws. Neutron emission is the most wel l studied decay channel. Its output has a much greater magnitude than othe r reactions: (γ\, 2n)\, (γ\, p)\, etc. In addition\, the direct registra tion of reaction products doesn’t allow to attribute nucleons to specifi c channel reliably if thresholds of several reactions are exceeded. Thus\, the photonuclear reactions with the emission of charged particles are stu died poorly. However\, they point out the domination of non-statistical de cay mechanisms in GDR region. For example\, the collective model overestim ates the yields of reactions with the neutron emission and significantly u nderestimates the reactions with the proton emission in nuclei with A > 90 . The isospin splitting of GDR effect is the reason for this. \nWe've inve stigated the photonuclear reactions on molybdenum isotopes for bremsstrahl ung with 20\, 40 and 55 MeV in this research. (γ\, p)\, (γ\, pn)\, (γ\, p2n)\, (γ\, α) and (γ\, αn) are studied. 20 MeV bremsstrahlung allows to distinguish the dominant reaction. 40 and 55 MeV bremsstrahlung enable to follow cross sections changes.\nThe values calculated in Talys1.95 are much smaller than the observed ones. We’ve tested method of isospin spl itting consideration for (γ\, p)-reactions and it has provided us with th e values which are close to experiments.\nThe statistical model also gives a strong yield underestimation for the reactions with the emission of α- particles\, for which the Coulomb barrier is essential in its framework. T he observed yield can be explained by the contribution of semi-direct reac tions occurring on time scales of 10-21 s when the barrier does not have e nough time to form and inhibit (γ\, α). Our results shows the connection s between yields and nuclear shell completeness. If the residual nucleus h as the magic number of neutrons (N = 50 in our case) then yield is much hi gher for such a reaction.\n\n\nThe reported study was funded by RFBR\, pro ject number 20-315-90124.\n\nhttps://events.sinp.msu.ru/event/8/contributi ons/536/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/536/ END:VEVENT BEGIN:VEVENT SUMMARY:TARGET DESIGN FOR EXPERIMENTAL INVESTIGATION OF ADS WITH PROTON AN D LIGHT ION BEAMS DTSTART;VALUE=DATE-TIME:20220712T120000Z DTEND;VALUE=DATE-TIME:20220712T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-541@events.sinp.msu.ru DESCRIPTION:Speakers: Mihaela Paraipan ()\nA particle accelerator coupled with a subcritical fission reactor (accelerator driven system - ADS) can r ealize a safe\, clean and efficient source of energy. We showed that in sp ite of the majority’s opinion with respect to the optimal beam for ADS ( considered to be proton with energy 1-1.5 GeV) light ion beams at lower en ergies are more efficient [1-3]. Aspects related with the core structure a nd composition\, the optimal value of the criticality coefficient keff\, t he particle beam and the accelerator type were analyzed. The larger pitch to diameter ratio possible to achieve in ADS (~2 for a core cooled with le ad or lead bismuth eutectic - LBE) allows to accommodate higher power dens ities\, keeping the coolant velocity below 2 m/s in order to minimize the corrosion effects on the cladding and structural materials. The role of a Be converter with large dimensions (radius 10-20 cm\, length 100-120 cm) i s emphasized. In the presence of a long Be converter a beam of 7Li with en ergy 0.2 AGeV is equivalent from the point of view of the net power produc ed with a beam of 1 GeV proton\, and a beam of 0.25 AGeV 7Li is equivalent with a beam of 1.5 GeV protons. This allows to obtain the same net power with a 2.5 times shorter accelerator with lower cost for the power plant b uilding and maintenance. The apparition of a tail towards thermal energy i n the neutron spectrum allows to obtain the needed value of the criticalit y coefficient keff in a given geometry with a lower enrichment\, increases the breeding capability of the core and ensures a deeper burning of the a ctinides in one cycle. Until 25 % of the actinides can be fissioned in one cycle in ADS with Be converter in comparison with 6-7 % that can be achie ved in a fast reactor. The analysis of the power evolution after beam stop ping and the investigation of possible insertions of positive reactivity d uring transients concluded that metallic fuel allows a core with keff 0.98 8\, when fuels with melting temperature higher than the clad (as oxide\, c arbide\, nitride) needs a lower value of 0.985 for keff. The maximum energ y gain of protons is obtained at 1.5 GeV when they are accelerated in a li nac (G ~14)\, and at lower energy (0.75-1 GeV) when a cyclotron is used. I n both situations ion beams starting with 4He realize higher energy gain t han protons. Ion beams offer the possibility to obtain energy gain from 25 (with 0.25AGeV 7Li beam) to 45 (with 0.75 AGeV 16O and 20Ne beam).\nA pro posal for the design of a target dedicated to the experimental study is pr esented. The design of the experimental target must reproduce at a small s cale the situation in a real ADS. The interest is to determine the minimal dimensions and minimal amount of fuel necessary for a correct reproductio n of the ratio of the energy released (amount of fissions) produced with p roton and ion beams. Two designs are analyzed. In the first\, the target c onsists of rods from enriched U (15 % 235U) with diameter 2 cm and length 120 cm\, distributed in 6 layers (~200 rods) inside a cylinder from Pb wit h length 150 cm and radius 70 cm. The central part of cylinder is empty\, allowing the placement of different converters. In the second variant the rods are placed in a graphite target\, surrounded by a 10 cm Pb blanket. D ue to the softer neutron spectrum\, the use of graphite target allows to d iminish significantly the number of fuel rods (~20 rods with 15 % 235U). \ n\nReferences:\n1. M. M. Paraipan\, A. A. Baldin\, E. G. Baldina\, S. I. T yutyunnikov\, EPJ proceedings MMCP2017\, 173 (2017).\n2. M. M. Paraipan\, V. M. Javadova\, S. I. Tyutyunnikov\, Prog. Nucl. En. 120 (2020).\n3. M. M . Paraipan\, I. A. Kryachko\, V. M. Javadova\, E. Levterova\, S. I. Tyutyu nnikov\, Phys. Part. Nucl. Lett. 19\, 2 (2022).\n\nhttps://events.sinp.msu .ru/event/8/contributions/541/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/541/ END:VEVENT BEGIN:VEVENT SUMMARY:INFINITE ELECTRON OSCILLATIONS NEAR THE CELL SEPARATOR IN THE SIMP LEST REACTOR DTSTART;VALUE=DATE-TIME:20220712T143000Z DTEND;VALUE=DATE-TIME:20220712T145000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-537@events.sinp.msu.ru DESCRIPTION:Speakers: Daria Zemlianskaya ()\nToday\, there are many unsolv ed mysteries in the physics of atmospheric lightning discharge. The unexpl ained phenomenon of atmospheric electricity is gamma-ray bursts observed s ince 1994 by space gamma-ray observatories (for example\, BATSE\, Fermi)\, created for observing gamma radiation from astrophysical sources. Mysteri ous natural gamma radiation of the earth's atmosphere is called Terrestria l Gamma-ray Flushes (TGFs). Long-term observation of TGF made it possible to establish that\, apparently\, this natural phenomenon is based on the a cceleration of relativistic electrons in the electric fields of thunderclo uds. Actually\, the fundamental phenomenon is the avalanche-like multiplic ation of fast electrons in matter. This phenomenon was proposed by Gurevic h [1]\, it is called runaway breakdown.\nIf we investigate the propagation of relativistic avalanches of runaway electrons at a sufficiently large v alue of the electric field in the case of two adjoining parts of the cloud with opposite directions of the electric field. In the simulation\, this configuration can be described as a system of two cells with different fie ld directions and called the simplest reactor. Under certain conditions of the system\, the initiation of feedback is possible. Electrons due to the presence of a field in the system will be accelerated\, and when they get into the field in the opposite direction\, they will turn. Along the way\ , they will emit gamma quanta\, on which the field does not act\, thus pla ying a key role in the formation of a non-stop process.\nIn this paper\, e lectrons were described that exist in the system and\, under the action of a field\, can begin to oscillate near the plane of separation of two cell s\, thereby maintaining feedback in the system of a simple reactor. This r elationship can exist even at small cell sizes and small margins. This mea ns that for the explosion criterion in a reactor\, not only the gamma feed back is essential\, but also electronic communication\, contributes to the development of gamma communication.\nThe purpose of this work was to stud y the process of gamma and electron multiplication for the simplest reacto r\, by modeling on GEANT4. The studies were carried out for particles with an energy of 5 MeV at a height of 10 km from the Earth's surface.\n\nhttp s://events.sinp.msu.ru/event/8/contributions/537/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/537/ END:VEVENT BEGIN:VEVENT SUMMARY:THERMAL PHOTONS PRODUCTION IN PROTON-PROTON COLLISIONS AT HIGH ENE RGIES DTSTART;VALUE=DATE-TIME:20220714T130000Z DTEND;VALUE=DATE-TIME:20220714T132000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-539@events.sinp.msu.ru DESCRIPTION:Speakers: Mohsun Alizada (Baku State University)\nIn proton-p roton collision at high energies are produced two type photons: prompt and thermal. Prompt photons are produced at Compton scattering of quark-gluon and at annihilation of quak-antquark processes [1]. Thermal photons are produced in the processes with participation π mesons [2]. \nWe construct ed Feynman diagrams of the thermal photons production in following process es: 1.\, 2. \, 3. \, 4. \, 5. \, 6. and wrote matrix elements. Calculation of the square of matrix elements are performed using FeynCalc. \nThe depe ndence of differential cross section of processes production thermal photo ns on energy of colliding protons and on cosine of angle of scattering of photons are investigated. In calculation of differential cross section of these processes form factor of mesons also has been taked in account.\nIt is shown that the differential cross section of investigated processes dec reased with increasing of energy of colliding protons. Comparison of diffe rential cross section of processes has been carried out. The dependence of differential cross section of processes 1\,3 and 4 on cosine of the angle of scattering photons is symmetric relative to 0 and it increases with th e cosine of the angle in the intervals [-1\, 0] and [0\, 1]. The different ial cross section of process 2 has a maximum at -1 cosine of the scatterin g angle of photons and decreases with increasing cosine of the angle scatt ering photons. The differential cross section of process 5 does not depend on cosine of the angle scattering photons. It is shown that accounting of the form factor of mesons reduces of differential cross section of proces ses.\n\n1. M. Germain\, on behalf of the ALICE Collaboration\, Nucl.Phys. A 967\, 696 (2017).\n2. J. Kapusta\, P. Lichard\, D. Seibert\, Phys.Rew. D 44\, 2774 (1991).\n\nhttps://events.sinp.msu.ru/event/8/contributions/539 / LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/539/ END:VEVENT BEGIN:VEVENT SUMMARY:USING A ΔE(SI)-E(CSI(TL)) TELESCOPE TO IDENTIFY LIGHT CHARGED PAR TICLES DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-538@events.sinp.msu.ru DESCRIPTION:Speakers: Zhassulan Zeinulla (JINR\, Dubna\, Russia)\nIn this work the analog\, digital and combination (analog-digital) electronic read out methods of pulse analysis of ΔE-E telescope detectors were studied. T he ΔE-E telescope\, consisting of thin Si-detector (H = 100 um) as a ΔE detector and CsI(Tl) scintillator (H = 20 mm) activated with Tl 0.7% as an E detector was used. The analog method of pulse analysis was carried out by using a dual spectroscopic amplifier Ortec-855 at the different integra tion times (τ = 0.5÷3.0 us) and a VME module of the analog-to-digital co nverter Mesytec MADC-32. The digital method of pulse analysis was carried out using a pulse processor Mesytec MDPP-16 CsI.\nIn the report the electr onic block schemes and two dimensional ΔE×E spectra obtained by the abov e mentioned methods were presented. The main attention was focused on the dynamic range of the detected particle identification.\nThe 1\,2\,3H\, 4He light charged particles with high positive Qgg value of the 6Li+9Be react ion together with 6\,7Li isotopes were registered by ΔE×E telescope at t he broad energy range. It was shown that the combined and digital electron ic readout methods of pulse analysis give the most effective particle iden tification at low-energy and high-energy ranges\, respectively. \nThe meas urements were carried out with 6Li beam at E = 10 MeV/nucleon of the U400 cyclotron at the FLNR JINR.\n\nhttps://events.sinp.msu.ru/event/8/contribu tions/538/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/538/ END:VEVENT BEGIN:VEVENT SUMMARY:BOSE-HUBBARD MODELS WITH ON-SITE AND NEAREST-NEIGHBOR INTERACTIONS : EXACTLY SOLVABLE CASE DTSTART;VALUE=DATE-TIME:20220715T091000Z DTEND;VALUE=DATE-TIME:20220715T093000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-544@events.sinp.msu.ru DESCRIPTION:Speakers: Saidakhmat Lakaev ()\nWe study the discrete spectrum of the two-particle Schrodinger operator depending on the quasi-momentum associated to the Bose-Hubbard Hamiltonian of a system of two identical bo sons interacting on one site and nearest-neighbor sites in the two-dimensi onal lattice with arbitrary interaction magnitudes. We completely describe the spectrum of Schrodinger operator with zero quasi-momentum and establi sh the optimal lower bound for the number of eigenvalues of Schrodinger op erator outside its essential spectrum for all non-zero values of quasi-mom entum.\n\nhttps://events.sinp.msu.ru/event/8/contributions/544/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/544/ END:VEVENT BEGIN:VEVENT SUMMARY:Hadronic resonance production with ALICE at the LHC DTSTART;VALUE=DATE-TIME:20220713T124000Z DTEND;VALUE=DATE-TIME:20220713T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-545@events.sinp.msu.ru DESCRIPTION:Speakers: Sergey Kiselev (NRC «Kurchatov Institute» - ITEP\, Moscow\, Russia)\nThe study of resonance production is important in proto n-proton\, proton-nucleus\, and heavy-ion collisions.\nIn heavy-ion collis ions\, since the lifetimes of short-lived resonances are comparable with t he lifetime \nof the late hadronic phase\, regeneration and rescattering e ffects become important and resonance yield ratios \nto those of longer li ved particles can be used to estimate the time interval between the chemic al and kinetic freeze-out.\nThe measurements in pp and p-Pb collisions con stitute a reference for nuclear collisions \nand provide information for t uning event generators inspired by Quantum Chromodynamics.\nIn this talk\, recent results on short-lived hadronic resonances obtained with ALICE at LHC energies are presented. \nThe presented results include system-size and collision-energy evolution of transverse momentum spectra\, \nyields and the ratios of resonance yields to those of longer lived particles\, an d nuclear modification factors. \nThe results will be compared with model predictions and measurements at lower energies.\n\nhttps://events.sinp.msu .ru/event/8/contributions/545/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/545/ END:VEVENT BEGIN:VEVENT SUMMARY:Finite nuclei size effects in elasticity of neutron star inner cru st DTSTART;VALUE=DATE-TIME:20220713T151000Z DTEND;VALUE=DATE-TIME:20220713T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-547@events.sinp.msu.ru DESCRIPTION:Speakers: Andrey Chugunov (Ioffe Institute)\nWhen considering elasticity in terrestrial conditions\, one can safely neglect the nuclear size and treat nuclei as point charges\, which create the electrostatic po tential for electrons. However\, it is not the case for the deepest layers of neutron star inner crust\, where the distance between nuclei becomes o f the same order as their sizes (e.g. [1\,2]). In these conditions\, the e lectrostatic potential\, induced by nearby nuclei and electrons\, can affe ct nuclei shape and indeed\, the most energetically favorable shape of nuc lei can substantially differ from spherical one (so-called pasta-phases in the mantle region) [1\,2]. Here we analyze the elasticity of the matter u nder these conditions. In comparison with [3]\, we consider not only the m antle region but also spherical nuclei of the deepest layers of the inner crust. We also take into account neutron skin as well as the fact that nuc leon number density can be affected by deformation. The latter effect decr eases elastic energy.\n\n1. N. Chamel\, P. Haensel\, Living Rev. Relativ. 11\, 10 (2008).\n2. C. J. Pethick\, D. G. Ravenhall\, Annu. Rev. Nucl. Par t. Sci. 45\, 429 (1995).\n3. C. J. Pethick and A. Y. Potekhin\, Physics Le tters B 427\, 7 (1998).\n\nhttps://events.sinp.msu.ru/event/8/contribution s/547/ LOCATION: Физический ф-т\, 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/547/ END:VEVENT BEGIN:VEVENT SUMMARY:New approaches to neutron monitoring in low background neutrino ex periments DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-546@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitrii Ponomarev (JINR)\nIn this work the new metho ds for neutron detection in low background experiments are presented. \n D uring study of background conditions of νGeN and Ricochet neutrino experi ments is has been shown that low intrinsic background helium-3 filled tube s are suitable not only for well known detection of thermal neutrons\, but also for the fast neutrons with energies up to few MeV. \nAlternative to the helium-3 could be NaI (Li+Tl) detectors. One such of the detectors loa ded with 1% of natural lithium was experimentally studied. The MC calculat ions based on our data shows that in a case of the detector loaded with 2% of lithium-6 and with its background reduced to the lowest values of avai lable NaI detectors\, it will becomes possible simultaneous measurement of low level fluxes for thermal\, epithermal and fast neutrons. That possibi lity\, together with traditional γ– measurements\, looks very promising for background characterization at neutrino experiment sites.\n\nhttps:// events.sinp.msu.ru/event/8/contributions/546/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/546/ END:VEVENT BEGIN:VEVENT SUMMARY:Proton and deuteron polarimetry at Nuclotron-NICA DTSTART;VALUE=DATE-TIME:20220714T144900Z DTEND;VALUE=DATE-TIME:20220714T150900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-548@events.sinp.msu.ru DESCRIPTION:Speakers: Arkadiy Terekhin ()\nExtensive experience has been a ccumulated in deuteron and proton beam polarization measurements as well a s in the the simulation of the pp-\, pd- and dp-elastic scattering up to 1 GeV/nucleon for polarimeter upgrade at the Nuclotron Internal Target Sta tion. Further development of the pp-\, pd- and dd- colliding beams polar imetry at NICA is discussed. The first results of the simulation of thes e proceses at the total energy up to 27 GeV are presented.\n\nhttps://even ts.sinp.msu.ru/event/8/contributions/548/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/548/ END:VEVENT BEGIN:VEVENT SUMMARY:Charmed Particle Production in Geant4 DTSTART;VALUE=DATE-TIME:20220715T072000Z DTEND;VALUE=DATE-TIME:20220715T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-550@events.sinp.msu.ru DESCRIPTION:Speakers: Aida Galoian (Joint Institute for Nuclear Research ( JINR))\nCharmed Particle Production in Geant4 \n \n A. Galoyan^1\, V. Grichine^2\, V. Uzhinsky^1 \n1 Joint Institute for Nuclear Research\, Dubna\, Russia\;\n2 P. N. Lebedev Physical Institute of RAS\, Moscow\, Ru ssia\n E-mail: galoyan@lxmx00.jinr.ru\n\nCharmed particles production was observed and measured in fixed target experiments performed in CERN\, Ferm ilab and DESY with hadron beams at energies from 200 GeV up to 900 GeV. T he charmed particles production is studied by all RHIC and LHC collaborati ons. It is expected that the charmed particles will be copiously produced at the Future Circular Collider (FCC). Due to long life time of the partic les\, it will be needed to account their interactions with surrounded matt er and detector materials. In order to meet the requirement\, the charmed particles were introduced in the Geant4 toolkit. First of all\, a list of the charmed particles according to PDG has been implemented. Their decay c hannels are not setting up until now\, though there is a possibility for u ser to determine the channels in the Geant4. The next step was simulation of the charmed particle production in soft hadronic interactions. We foll owed to the Kaidalov – Piskunova approach [1\,2]. The approach gives fr agmentation functions of quarks into the charmed particles. It is assumed that there are no constituent charmed quarks in initial hadrons. All of t hese has been implemented in FTFP and QGSP hadronic generators of the Gean t4 toolkit\, and allow to reach a good description of known experimental d ata on the soft charmed particle production. \nWe have applied a simple sc aling in calculation of cross sections of the charmed particles with nucle ons [3]. We are going to generalize it for nuclear targets. We will consi der some details of the implementation in our talk.\n\n 1. A.B. Kaida lov and O.I. Piskunova\, Z. Phys. C 30\, 145 (1986). \n 2. A.B. Kai dalov and O.I. Piskunova\, Sov. J. Nucl. Phys. 43\, 994 (1986).\n 3. V.N. Grichine\, IEEE Trans. Nucl. Sci. 67\, 1993 (2020).\n\nhttps://ev ents.sinp.msu.ru/event/8/contributions/550/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/550/ END:VEVENT BEGIN:VEVENT SUMMARY:STUDY OF DOSE DELIVERY FOR TOTAL BODY IRRADIATION ON TOMOTHERAPY U SING EXIT DETECTOR DATA DTSTART;VALUE=DATE-TIME:20220715T082000Z DTEND;VALUE=DATE-TIME:20220715T084000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-549@events.sinp.msu.ru DESCRIPTION:Speakers: Diana Tovmasian (1 Lomonosov Moscow State University \, Russia 2 Dmitry Rogachev National Medical Research Center Of Pediatri c Hematology\, Oncology and Immunology)\nOptimized Conformal Total Body Ir radiation (OC-TBI) is very complex and unique method of radiotherapy. It i nclude irradiation of the whole body with dose of 12 Gy\, except organs at risk: lungs\, kidneys\, liver and lenses. Because of its complicity\, we need to pay attention to dose delivery in this method.\nThe evaluation of the delivered dose for patient received OC-TBI on TomoTherapy can be done using MVCT images and raw data from exit detectors. Exit detectors are an important part of TomoTherapy that needed to visualize patient anatomy rig ht before the treatment. Also they store a huge amount of information abou t the beam characteristics throughout the procedure\, that achieved by 640 xenon ionization chambers.\nWe used CIRS ATOM anthropomorphic phantom to find correlation between fluence of radioation that collects in detectors and the dose in each area of irradiation. 12 additional plans with differe nt shifts were calculated and then performed on Tomotherapy. Signal from e xit detectors was collected and analyzed with Gamma 0.5%/0.5 mm criteria.\ nData from exit detectors during irradiation of patients were also used fo r analysis. We took 24 data from procedure of OC-TBI and analyzed them in our hand-made software in MatLab. MVCT images were taken before treatment for each fractions and then were exported in MIM software that has the opp ortunity to recalculate dose. For each fraction the patient CT was deforme d using MVCT images\, creating an synthetic CT (sCT). Dose recalculation w as performed on the sCT. Planned and delivered doses were compared using G amma 3%/1 mm criteria.\nWe found that coefficient of determination between fluence and dose for anthropomorphic phantom is bigger than 80% in all ar eas of irradiation: mean coefficient of determination is 87.9 ± 7.2 %. Fo r patients coefficients of determination decrease due to micro movements a nd breathing. Mean gamma index in the area with minimum moving (head) is 9 6.0 ± 4.2 %\, when in the area of breathing (chest) it decrease to 69.9 ± 12.6 %. It shows that signal from detectors very sensitive to any movem ent\, which should be taken into account in further research.\nThe study s howed that fluence and dose in OC-TBI procedures have a high correlation. That can lead to dose evaluation only from data from detectors.\n\nhttps:/ /events.sinp.msu.ru/event/8/contributions/549/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/549/ END:VEVENT BEGIN:VEVENT SUMMARY:Production of Σ0 hyperon and search of Σ0-hypernuclei at LHC wi th ALICE DTSTART;VALUE=DATE-TIME:20220712T093000Z DTEND;VALUE=DATE-TIME:20220712T095000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-552@events.sinp.msu.ru DESCRIPTION:Speakers: Alexander Borissov (MIPT (RU))\nThe first measuremen ts of the transverse momentum (pT) spectra\, integrated yields and mean pT of Σ0 and anti-Σ0 hyperons in pp collisions at s√=7 TeV at the LHC ar e presented. The Σ0(anti-Σ0) signal is reconstructed via its electromagn etic decay channel Λ (anti-Λ)γ. The Λ (anti-Λ) baryon is reconstructe d via its decay into p + π− (anti-p+π+)\, while the photon is detected by exploiting the unique capability of the ALICE detector to measure low- energy photons via conversion into e+e− pairs in the detector material.\ nThe yield of Σ0 is compared to that of the Λ baryon\, which has the sam e quark content but different isospin. These data contribute to the unders tanding of hadron production mechanisms and provide a reference for constr aining QCD-inspired models and tuning Monte Carlo event generators such as PYTHIA.\n\nIn addition\, the feasibility of a search for a bound state of proton\, neutron and Σ0 (Σ0-hypernuclei 3Σ0H) is presented\, based on the luminosities foreseen for the LHC Runs 3 and 4.\n\nhttps://events.sinp .msu.ru/event/8/contributions/552/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/552/ END:VEVENT BEGIN:VEVENT SUMMARY:The effect of the "FLAT-TOP" resonant system of the DC-280 acceler ator on the accelerated ion beam DTSTART;VALUE=DATE-TIME:20220713T074000Z DTEND;VALUE=DATE-TIME:20220713T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-556@events.sinp.msu.ru DESCRIPTION:Speakers: Павел Игоревич ()\nThe work was carried out\, during which the effect of the additional accelerating system "flat -top" on the beam of accelerated ions was studied and verified. This techn ology makes it possible to reduce the energy spread in accelerated ion clu mps and implement an effective single-turn output\, which consequently inc reases the efficiency of beam transmission.\n\nhttps://events.sinp.msu.ru/ event/8/contributions/556/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/556/ END:VEVENT BEGIN:VEVENT SUMMARY:Application of unfolding method for obtaining nuclear data DTSTART;VALUE=DATE-TIME:20220713T152000Z DTEND;VALUE=DATE-TIME:20220713T154000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-554@events.sinp.msu.ru DESCRIPTION:Speakers: David Knezevic (Institute of Physics Belgrade\, Serb ia)\nThe unfolding method is a well-known technique used in nuclear physic s. This method is usually used to unfold the neutron spectrum based on a m easurement of neutron activities in various energy ranges and known cross sections for reactions of interest. But it has also found application in various fields of nuclear physics. The basis of this method is that the ac tivity measured in an experiment \,when the activity is induced by nuclear reaction\, is proportional to the product od the cross section for the re action and the flux of the projectile particles. Then\, combining the meas urements of activities with the well known values of one of the spectrum i nvolved\, the other one can be determined from the set of initial assumpti ons about the spectrum (default)\, which can be a theoretical calculation or any other available source. This spectrum is then unfolded in order to better describe the experimentally obtained results.\n\nThis allows for va rious usage of the unfolding methods within the field of nuclear physics\, which will be presented here. It can be used to approximate the presence of neutrons at the place of the HPGe detector based on the activities of a ctivated Ge isotopes after the interaction of the neutrons with the nuclei of the detector. By using the theoretical spectrum for the neutron flux f rom cosmic rays at ground level\, this spectrum can be unfolded to better describe the actual neutron spectrum at the position of HPGe detector[1]. In the case of photo-nuclear reactions\, if the photon flux is well known\ , based on the measured activities\, it is possible to test various theore tical values of cross section by inserting them as a default functions and comparing the unfolded spectrum with the theoretical spectrum [2]. In cas e of photo-nuclear reaction where the cross section is well known\, it can be used to determine the photon flux\, by using the theoretical bremsstra hlung spectrum as a default function.\n\nIn this work\, we will present pr eviously done work and possible future applications of the unfolding metho d in the field of nuclear physics. \n\n\n1. D. Knežević\, et al.\, Nucl. Instrum. Methods. A\, 833\, 23 (2016)\n2. Medic\, Z.\, et al.\, Eur. Phys . J.\, 57.8\, 1 (2021)\n\nhttps://events.sinp.msu.ru/event/8/contributions /554/ LOCATION: Физический ф-т\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/554/ END:VEVENT BEGIN:VEVENT SUMMARY:HADRON PRODUCTION IN pp AND AA COLLISIONS WITHIN SELF-SIMILARITY A PPROACH DTSTART;VALUE=DATE-TIME:20220714T150900Z DTEND;VALUE=DATE-TIME:20220714T152900Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-568@events.sinp.msu.ru DESCRIPTION:Speakers: Andrei Zaitsev ()\nThe self-similarity approach is a pplied to study the hadron production in mid-rapidity region in $pp$ and $ AA$ collisions. Our calculations describe satisfactorily the experimental data on the inclusive pT spectra of pions and kaons produced in $pp$ and c entral $BeBe$ collisions and their ratios as a function of initial energy $\\sqrt{s}$. We collect also data on ratios of baryon to anti-baryon yield s in $pp$ and $AA$ collisions as a function of $\\sqrt{s}$ and find the si milarity of these ratios for different colliding nuclei.\n\nhttps://events .sinp.msu.ru/event/8/contributions/568/ LOCATION: НИИЯФ\, ЮК\, Ц-05 URL:https://events.sinp.msu.ru/event/8/contributions/568/ END:VEVENT BEGIN:VEVENT SUMMARY:MINLOS-FADDEEV REGULARIZATION OF ZERO-RANGE INTERACTIONS IN THE TH REE-BODY PROBLEM DTSTART;VALUE=DATE-TIME:20220715T093000Z DTEND;VALUE=DATE-TIME:20220715T095000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-557@events.sinp.msu.ru DESCRIPTION:Speakers: Anastasia Malykh (Joint Institute for Nuclear Resear ch\, Dubna)\nApplication of zero-range two-body interactions in the three- body problem is not a trivial task\, which manifests in appearance of Efim ov or Thomas effects. One particular modification of zero-range interactio ns was suggested in the influential paper by Minlos and Faddeev [1] and wa s further analyzed in [2]. A main idea is to regularize the three-body pro blem by adding the effective three-body force\, which reduces the interact ion strength near the triple-collision point. As a result\, the Efimov and Thomas effects are prohibited if the strength of regularizing term s exce eds the critical value $\\sigma_c$. Recently\, it was claimed that the con dition $\\sigma \\ge \\sigma_c$ provides the unambiguous description of th e problem for three identical bosons [3] and for N identical bosons intera cting with a distinct particle [4]. \n\nThe proposed modification is studi ed and it is shown that to regularize the three-body problem\, the paramet er s should exceed another critical value $\\sigma_r > \\sigma_c$. More d etailed analysis is given for the interval $\\sigma_c \\le \\sigma < \\sig ma_r$\, for which unambiguous description requires one to set a boundary c ondition at the triple-collision point. \nThese considerations are explici tly demonstrated for two-component system consisting of two identical boso ns interacting with a distinct particle and for three identical bosons. To elucidate the description\, the bound-state energies of three identical b osons are calculated as a function of s and an additional parameter $b$\, which determines the boundary condition. \n\n1. R.A. Minlos and L.D. Fadde ev\, Dokl. Akad. Nauk SSSR 141\, 1335 (1961)\n [Sov. Phys. Doklady 141 \, 1335 (1962)].\n2. S. Albeverio\, et.al.\, Phys. Lett. A 83\, 105 (1981) .\n3. Giulia Basti\, et.al.\, arXiv:2107.07188 [math-ph] (2021).\n4. D. Fe rretti and A. Teta\, arXiv:2202.12765 [math-ph] (2022).\n\nhttps://events. sinp.msu.ru/event/8/contributions/557/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/557/ END:VEVENT BEGIN:VEVENT SUMMARY:First measurement of the forward rapidity gap distribution in prot on-lead collisions at LHC energy $\\sqrt{s_{\\mathrm{NN}}} = 8.16\\mathrm{ ~TeV}$ with the CMS experiment DTSTART;VALUE=DATE-TIME:20220712T120000Z DTEND;VALUE=DATE-TIME:20220712T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-558@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitry Sosnov (NRC KI — PNPI)\nFor the first time at LHC energies\, we present the forward rapidity gap spectra from proton- lead (pPb) collisions for both pomeron-lead and pomeron-proton topologies. The analysis is performed over 10.4 units of pseudorapidity. The center-o f-mass energy is 8.16 TeV per nucleon-nucleon pair\, i.e.\, almost 300 tim es higher than previous measurements of diffractive production in proton-n ucleus collisions. For the pomeron-lead topology\, the EPOS - LHC predicti ons are a factor of two below the unfolded data\, but the model does give a reasonable description of the spectrum's shape. For the pomeron-proton t opology\, the EPOS-LHC\, QGSJET II\, and HIJING generator predictions are all at least a factor of five below the data. This effect can be explained by a significant contribution of ultra-peripheral photoproduction events mimicking the signature of diffractive processes. The obtained data may be of significant help in understanding the high energy limit of QCD and mod eling cosmic ray air showers.\n\nhttps://events.sinp.msu.ru/event/8/contri butions/558/ LOCATION: НИИЯФ\, ЮК\, 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/558/ END:VEVENT BEGIN:VEVENT SUMMARY:Dijet events with large rapidity separation in proton-proton colli sions at √s = 2.76 TeV with CMS detector DTSTART;VALUE=DATE-TIME:20220713T145000Z DTEND;VALUE=DATE-TIME:20220713T151000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-559@events.sinp.msu.ru DESCRIPTION:Speakers: Anatolii Egorov (NRC KI – PNPI\, Gatchina & St.Pet ersburg Polytechnic University\, Russia)\nThe new search for Balitsky-Fa­ din-Kuraev-Lipatov (BFKL) evolution effects is performed at the Large Hadr on Collider by the Compact Muon Solenoid experiment. The cross sections fo r inclusive and Mueller-Navelet dijet production are measured as a functio n of the rapidity separation between the jets in proton-proton collisions at √s = 2.76 TeV for jets with transverse momentum pT > 35 GeV and rapid ity |y| < 4.7. Various dijet production cross section ratios are also meas ured. A veto on additional jets with pT > 20GeV is introduced to improve t he sensitivity to the BFKL evolution. The measurement is compared with the predictions of various Monte Carlo models based on leading-order and next -to-leading-order calculations including the Dokshitzer-Gribov-Lipatov-Alt arelli-Parisi leading-logarithm (LL) parton shower as well as the LL BFKL resummation.\n\nhttps://events.sinp.msu.ru/event/8/contributions/559/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/559/ END:VEVENT BEGIN:VEVENT SUMMARY:ABSENCE OF THE THREE-BODY BOUND STATES FOR SMALL MASS RATIO IN THE TWO-COMPONENT SYSTEM DTSTART;VALUE=DATE-TIME:20220715T095000Z DTEND;VALUE=DATE-TIME:20220715T101000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-560@events.sinp.msu.ru DESCRIPTION:Speakers: Oleg Kartavtsev (Joint Institute for Nuclear Researc h\, Dubna)\nIt is of interest to determine the mass-ratio\, below which th ere are no bound states\, for two-component system of two identical partic les interacting with a distinct particle via contact interaction. Using th e hyperradial expansion and taking into account that interaction is of zer o range\, the two-variable inequality was derived\, which provides absence of bound states. The variable are mass ratio and the lowest eigenvalue of an auxiliary eigenvalue problem on hyper-sphere. This inequality is analy zed for different sectors of total angular momentum and parity. As a resul t\, desired values of the mass ratio for few lowest angular momenta are ob tained. Till now\, this problem was considered for the sector of unit tota l angular momentum and negative parity by analysing momentum-space integra l equation [1]. \n\n1 S. Becker\, A. Michelangeli and A. Ottolini\, Math. Phys. Anal. Geom 21\, 35 (2018).\n\nhttps://events.sinp.msu.ru/event/8/con tributions/560/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/560/ END:VEVENT BEGIN:VEVENT SUMMARY:DEVELOPMENT OF THE CRITERION FOR THE IDENTIFICATION OF CONTRAST AG ENTS IN PHOTON-COUNTING COMPUTED TOMOGRAPHY DTSTART;VALUE=DATE-TIME:20220713T151000Z DTEND;VALUE=DATE-TIME:20220713T153000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-562@events.sinp.msu.ru DESCRIPTION:Speakers: Rostislav Sotenskiy (JINR)\nThe identification of su bstances is one of the tasks in the development of a new multi-energy X-ra y tomograph based on the Widepix detector. The Widepix detector is one of Medipix series detectors\, which are hybrid semiconductor pixel detectors\ , developed by the Medipix collaboration. This detector has a high spatial resolution and is capable of detecting radiation in different energy rang es\, which makes it possible to use it in photon-counting computed tomogra phy (PCCT).\nThis report presents the development and the results of apply ing a criterion for identifying contrast agents for samples containing var ious concentrations of lanthanum. This criterion was investigated on the b asis of energy information presented in the form of a 2D image and a recon structed 3D tomogram. The developed criterion is also capable of estimatin g the concentrations of substances in samples without using the entire ene rgy spectrum\, which makes it possible to reduce the time of sample irradi ation and the time of data collection.\n\nhttps://events.sinp.msu.ru/event /8/contributions/562/ LOCATION: Физический ф-т\, ауд. 5-19 URL:https://events.sinp.msu.ru/event/8/contributions/562/ END:VEVENT BEGIN:VEVENT SUMMARY:SIMULATION OF ELECTRON DOSE DISTRIBUTION IN TISSUE EQUIVALENT LAYE RS OF MULTILAYER IONIZATION CHAMBER DTSTART;VALUE=DATE-TIME:20220715T072000Z DTEND;VALUE=DATE-TIME:20220715T074000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-561@events.sinp.msu.ru DESCRIPTION:Speakers: Michael Lifanov (Russian federation)\nM. $Lifanov^1$ *\, S. $Potashev^{1\,2}$\, Yu. $Burmistrov^1$\, V. $Ponomarev^1$\n\n$^1$ I nstitute for Nuclear Research of Russian Academy of Sciences\, Moscow\n$^2 $ P.N. Lebedev Physical Institute of the Russian Academy of Sciences Mosco w\n\n\n*E-mail: mikelifanov@bk.ru\n\nDepth distribution of ionization loss es by electron beam from the output channel at angle of $270^o$ of LUE-8 a ccelerator is measured. A four-layer ionization chamber in current mode is used for measurements [1]. Ionization chamber air layers imitates layers which equivalent to biological tissue if taking into account correction fa ctor. Method for testing of various radiation-protective material elements of at LUE-8 accelerator up to 8 MeV is proposed and studied. Depth-dose d istribution is obtained.\n\nS. Potashev\, Yu. Burmistrov\, S. Zuyev\, S. K araevsky\, E. Konobeevski\, V. Razin and A. Afonin A four-layer gaseous de tector allowing to measure the energy of charged particles. Journal of Phy sics: Conference Series 1390 (2019) 012120\, doi:10.1088/1742-6596/1390/1/ 012120\n\nhttps://events.sinp.msu.ru/event/8/contributions/561/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/561/ END:VEVENT BEGIN:VEVENT SUMMARY:Photonuclear method of 161Tb production DTSTART;VALUE=DATE-TIME:20220715T120000Z DTEND;VALUE=DATE-TIME:20220715T122000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-563@events.sinp.msu.ru DESCRIPTION:Speakers: Nadezhda Fursova (Faculty of Physics\, Lomonosov Mos cow State University\, Russia)\n$^{161}$Tb is a medical isotope that is co nsidered in therapy as an alternative to the widely used $^{177}$Lu. Curre ntly\, the main way of production of this radionuclide is the reactor meth od based on the neutron capture reaction followed by β-decay: $^{160}$Gd( n\,γ)$^{161}$Gd→$^{161}$Tb. However\, in this case it is necessary to u se expensive enriched targets. This disadvantage is the reason why the dev elopment of alternative methods for production of the radioisotope $^{161} $Tb is an important issue.\nTheoretical analysis of the possibility of pro ducing the radioisotope $^{161}$Tb by the photonuclear method was performe d. Using cross sections calculated on the basis of a combined model of pho tonuclear reactions\, the yields and activities of reactions $^{162}$Dy(γ \,p) and $^{163}$Dy(γ\,pn) on electron beam at energies up to 70 MeV were estimated. The side reaction activities of $^{161}$Dy(γ\,p)\, $^{162}$Dy (γ\,pn)\, $^{163}$Dy(γ\,p2n) and $^{163}$Dy(γ\,p) were also analyzed. T he optimal conditions for the production of $^{161}$Tb were chosen on the assumption that the activity of the main reaction should be more than 1MBq \, and the activity of the side reactions should be 4 orders of magnitude less than it. The obtained results indicate the possibility of using the m onoisotopes $^{162}$Dy and $^{163}$Dy at energies of 19-21 MeV and 25-27 M eV\, respectively\, to produce $^{161}$Tb radionuclide.\n\nhttps://events. sinp.msu.ru/event/8/contributions/563/ LOCATION: НИИЯФ\, 19к\, ауд. 2-15 URL:https://events.sinp.msu.ru/event/8/contributions/563/ END:VEVENT BEGIN:VEVENT SUMMARY:ON THE ELASTIC ELECTROWEAK SCATTERING OF POLARIZED LEPTONS BY SPIN 7/2 NUCLEI DTSTART;VALUE=DATE-TIME:20220713T080000Z DTEND;VALUE=DATE-TIME:20220713T082000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-564@events.sinp.msu.ru DESCRIPTION:Speakers: Minikhan Safin (Peoples' Friendship University of Ru ssia)\nIn [1\,2]\, in the framework of a general approach to the covariant description of the structure of half-integer spin nuclei\, analytical exp ressions were found for the multipole expansion of the structure functions in the differential cross section for elastic scattering of longitudina lly polarized leptons\n .\n\nhttps://events.sinp.msu.ru/event/8/contributi ons/564/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/564/ END:VEVENT BEGIN:VEVENT SUMMARY:The computational tool for evaluation of Nπ electroproduction cro ss sections DTSTART;VALUE=DATE-TIME:20220714T132000Z DTEND;VALUE=DATE-TIME:20220714T134000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-567@events.sinp.msu.ru DESCRIPTION:Speakers: Almaz Nasrtdinov (MSU)\nThe measurements of exclusiv e $\\pi^+n$ and $\\pi^op$ electroproduction with the CLAS detector in Hall B at Jlab provided the dominant part of the world data on observables of these channels [1\,2] stored in the CLAS Physics Data Base [3]. The data o n exclusive Nπ and $\\pi^+\\pi^-p$ electroproduction are the major source of the information on nucleon resonance (N*) electroexcitation amplitudes . They offer insight into the Nπ structure and strong QCD dynamics which underlie the nucleon resonance generation from quarks and gluons [1\,2\,4] . The approach for evaluation of the four-fold $N\\pi$ differential cross sections from unpolarized\, transverse-transverse\, longitudinal-transvers e exclusive structure functions will be presented in the talk. The special procedures were developed for extraction of the mentioned above structure functions from experimental data. These structure functions were interpol ated within entire $N\\pi$ electroproduction phase space covered in the me asurements with CLAS offering evaluation of $N\\pi$ electroproduction cros s section entirely from the experimental data without any bias from reacti on models. Comparison with the available data on Np electroproduction dem onstrated credibility of approaches developed for cross section evaluation . For the first time\, reliable estimates of $N\\pi$ electroproduction obs ervables have become available within a broad kinematics area of the invar iant masses of the final hadron system of W < 1.7 GeV and the photon virtu ality range $Q^2$ < 5.0 $GeV^2$. The estimated $N\\pi$ cross sections and exclusive structure functions are of particular importance for the studies of the N* structure. Future extension of these estimates toward higher W covering DIS region are important for exploration of the ground nucleon st ructure in 3-dimesions from the results on the chiral-odd generalized part on distributions constrained by the data of deeply virtual $N\\pi$ electro production. The extracted structure functions and the computer code for on -line evaluation of Np electroproduction cross sections are available on t he website [5] for the access worldwide.\n\n\n1. I.G. Aznauryan and V.D. B urkert\, Electroexcitation of Nucleon Resonances\, Prog. Part. Nucl. Phys. 67\, 1 (2012).\n2. D.S. Carman\, K. Joo\, and V.I. Mokeev\, Few Body Syst . 61 29 (2020).\n3. CLAS Physics Database\, http://clasweb.jlab.org/physic sdb\n4. V.D. Burkert et al.\, The Nucleon Resonance Structure from the $\\ pi^+\\pi^-p$ electroproduction Reaction off Protons\, Moscow Univ. Phys. B ull. 74\, 243 (2019).\n5. https://clas.sinp.msu.ru/~almaz\n\nhttps://event s.sinp.msu.ru/event/8/contributions/567/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/567/ END:VEVENT BEGIN:VEVENT SUMMARY:COMPARISON OF SOME KINEMATICAL CHARACTERISTICS OF PROTONS IN COLLI SIONS n12C AND p12C AT 4.2 GeV/s DTSTART;VALUE=DATE-TIME:20220713T074000Z DTEND;VALUE=DATE-TIME:20220713T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-566@events.sinp.msu.ru DESCRIPTION:Speakers: raxmatillo bekmirzaev (nurmurodovich)\nCOMPARISON OF SOME KINEMATICAL CHARACTERISTICS OF PROTONS IN COLLISIONS n12C AND p12C A T 4.2 GeV/s\nR.N. Bekmirzaev 1 \, Kh.K. Olimov 2 \n1 Jizzakh State Pedagog ical Institute\, 130100\, Jizzakh\, Uzbekistan\,\nbekmirzaev@mail.ru\n2 Ph ysical-Technical Institute of the Academy of Sciences of the Republic of U zbekistan\, 100084\, Tashkent\, Uzbekistan\,\n olimov@uzsci.net\nIt is kno wn\, the interaction of high-energy protons with nucleons and nuclei has b een well studied experimentally in a wide range of primary energies\, and due to the difficulties in obtaining monochromatic beams of neutral partic les\, experimental information on collisions of neutrons with nuclei (nA) obtained under the conditions of 4π-geometry very rare [1-3] and based on few statistics. Therefore\, obtaining experimental data on nA collisions and comparing them with data on pA interactions at the same energy and for the same target nucleus is of considerable interest. The work is devoted to a comparative analysis of various kinematic characteristics of protons in n12C and p12C collisions at a momentum of 4.2 GeV/s.\nExperimental mate rial was obtained using a two-meter propane bubble chamber of the High Ene rgy Laboratory of the Joint Institute for Nuclear Research (Dubna\, Russia )\, irradiated with beams of protons\, deuteron nuclei (d = 2H) and helium -4 at a momentum of 4.2 GeV/s per nucleon at the synchrophasotron in Dubna [2]. The average values of the total and transverse momenta of protons wi th their average escape angles and speed in n12C and p12C collisions are o btained separately for events with and without negative pions in the final state of the reaction. The average value of the total momentum of protons produced in n12C collisions with n (π−) = 0 is much smaller than in p1 2C collisions \, since most of the protons in this case come from the targ et. In the case when one or several negative pions are formed in an event\ , the average value of the total momentum of protons in n12C collisions is greater than in p12C interactions . \nA comparative analysis of the mean values of various kinematic characteristics of protons produced in n12C an d p12C collisions at 4.2 GeV/s has been carried out. The difference in the average momenta of protons in n12C and p1 C is related to the difference in the probabilities of proton conservation in the first case and rechargi ng of the primary neutron by a proton in the second.\nREFERENCES\n1. R. N. Bekmirzaev\, Nuclear Physics\, 40\, 1477 (1984).\n2. Olimov K et al.\, Re ports of the Academy of Sciences of the Republic of Uzbekistan\, 4 (2011) 29.\n3. Olimov\, K. et al.\, “Comparative analysis of characteristics of protons produced in n12C and p12C collisions at 4.2 GeV/s”\, submitted to Intern. J. Mod. Phys. E\, (2020).\n\nhttps://events.sinp.msu.ru/event/8 /contributions/566/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/566/ END:VEVENT BEGIN:VEVENT SUMMARY:MODERNIZATION OF CORSET SETUP TO MEASURE CHARGE DISTRIBUTIONS OF F ISSION FRAGMENTS USING BRAGG IONIZATION CHAMBER DTSTART;VALUE=DATE-TIME:20220713T081000Z DTEND;VALUE=DATE-TIME:20220713T083000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-571@events.sinp.msu.ru DESCRIPTION:Speakers: Vahan Kirakosyan (Joint Institute for Nuclear Resear ch)\, Yerzhan Mukhamejanov (Joint Institute for Nuclear Research)\, Artem Ostroukhov (Joint Institute for Nuclear Research)\nBecause fission is the result of competition between electrostatic and nuclear forces\, informati on about the distribution of charge is critical to understanding the dynam ics of a fissioning nucleus\, as well as refining the parameters of fissio n process models needed for their developing. In this regard\, the measure ment of the charges of fission fragments is a crucially important task\, t herefore\, various methods have been developed for measuring charges based on the Bethe-Bloch theory [1]\, which relates the specific energy loss to the charge number Z. One of these methods is the determination of the cha rge by the Brag peak [2]\, which is widely used both in nuclear physics ex periments and applied research [3–7].\nA system for measuring the charge distributions of fission fragments using an axial Bragg ionization chambe r (BIC) has been developed. The design of the chamber makes it possible to change the distance between the cathode and the anode\, which\, in turn\, along with a change in the pressure of the working gas\, makes it possibl e to register a wider range of charge distributions depending on the task. The development of a technique for extracting information about the charg e number from the signals of the BIC will significantly expand the range o f tasks of the CORSET time-of-flight spectrometer [8]. In addition to meas uring the mass-energy distributions\, the charge distributions of fission fragments will be measured. The upgraded setup has the ability to smoothly change the angles of the Bragg ionization chamber\, which allows one to m easure the charge distributions of fragments emitted at different angles r elative to the beam. This work presents test measurements.\n\n1. H. Bethe und J. Ashkin in "Experimental Nuclear Physics\, New York\, 1953\, p. 253\ n2. C.R. Gruhn\, et al.\, Bragg curve spectroscopy\, Nucl. Instrum. Meth. 196 (1982) 33-40\n3. J.M. Asselineau\, et al.\, Performance of a bragg cur ve detector for heavy ion identification\, Nucl. Instrum. Methods 204 (198 2) 109–115.\n4. A. Oed\, P. Geltenbort\, F. Gönnenwein\, A new method t o identify nuclear charges of fission fragments\, Nucl. Instrum. Methods 2 05 (1983) 451–453.\n5. W. Neubert\, Bragg curve spectroscopy of fission fragments by using parallel plate avalanche counters\, Nucl. Instrum. Meth ods A 237 (1985) 535–542.\n6. Kamanin\, D.V.\, et al.\, Proc. Int. Symp. on Exotic Nuclei. EXON2004 (Peterhof\, Russia\, 2004)\, Singapore: World Sci.\, 2005\, p. 588.\n7. E. Pellereau\, et al.\, Accurate isotopic fissio n yields of electromagnetically-induced fission of 238U measured in invers e kinematics at relativistic energies\, Phys. Rev. C 95 (2017) 054603\n8. Kozulin\, E.M.\, et al.\, Instrum. Exp. Tech.\, 2008\, vol. 51\, p. 44.\n\ nhttps://events.sinp.msu.ru/event/8/contributions/571/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/571/ END:VEVENT BEGIN:VEVENT SUMMARY:Ultra lightweight support structures and gaseous cooling system fo r the novel silicon pixel detectors DTSTART;VALUE=DATE-TIME:20220713T074000Z DTEND;VALUE=DATE-TIME:20220713T080000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-570@events.sinp.msu.ru DESCRIPTION:Speakers: Vera Misheneva ()\nNew research tasks in high-energy physics experiments require using the advanced materials and methods for the precise tracking and decay vertices registration of short-lived charge d particles.\nTherefore\, very thin large area\, coordinate-sensitive Si d etectors with high granularity and the highest radiation transparency will be used for the innermost tracking layers on the next stage of the ALICE experiment at the LHC. Such vertex detectors can provide minimal distortio ns of the registered tracks because of the multiple scattering effects and their application is also being planned for NICA experiments at JINR. In present work\, the conceptual ideas and results of developments of ultra l ightweight support structures and cold nitrogen cooling system proposed fo r next-generation of radiation transparent vertex detectors are discussed [1]. \nTherefore\, the lightweight and radiation transparent materials sho uld be used to develop support structures and cooling system for new silic on pixel detectors. On the one hand\, an ultra lightweight system has to b e strong enough to support the detectors\, on the other hand this system s hould be radiation transparent with the minimum material budget of its com ponents. This means that all parts of the detector system\, sensors\, micr o cables\, support structures and cooling system should have a minimum amo unt of low-Z materials. The gaseous cooling of detectors is being consider ed as an appropriate option [2]. In this case\, we need to avoid vibration s\, that could happen for very thin (~ 20 micron)\, large area Si detector s in case of the non-negligible speed required for the gas flow. In order to reduce these micro-vibrations the low-speed flow of the cold gas was pr oposed.\nIn present work\, our developments of ultra lightweight\, support structures with cold nitrogen cooling system for new generation of thin\, large area\, coordinate-sensitive Si detectors are presented.\nThis work is supported by the SPbSU grant ID: 93025208\nReferencies:\n1. First demon stration of in-beam performance of bent Monolithic Active Pixel Sensors\, ALICE ITS project Collaboration\, G. Aglieri Rinella (CERN) et al\, Nucl.I nstrum.Meth.A 1028 (2022)\n2. Physics Briefing Book : Input for the Europe an Strategy for Particle Physics Update 2020\, Ellis\, Richard Keith (Durh am U.\, IPPP) et al. CERN\, Report number: CERN-ESU-004 (See p.212\, contr ibution 46: G. Feofilov et al.\, “Heavy-flavour production in relativist ic heavy-ion collisions and development of novel generation of extra- low- material-budget Vertex Detectors for future experiments at CERN and JINR ”).\n\nhttps://events.sinp.msu.ru/event/8/contributions/570/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/570/ END:VEVENT BEGIN:VEVENT SUMMARY:OBSERVATION OF THE SHAPE ISOMER STATES IN FISSION FRAGMENTS FROM ( γ\, f) REACTIONS DTSTART;VALUE=DATE-TIME:20220712T070000Z DTEND;VALUE=DATE-TIME:20220712T072000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-573@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitry Kamanin (JINR)\nThe experiments were performe d at the beam of the MT-25 microtron\, FLNR\, JINR\, using VEGA (V–E Gui de based Array) setup. Fission fragments (FFs) from the $^{235\, 238}$U ($ ɣ\, f$) reactions are captured by the electrostatic guide system (EGS). T he EGS constitutes a cylindrical capacitor of four meters long with a thin wire as a central electrode. Some part of the ions emitted from the targe t at one end of the guide can be involved in the spiral-like movement alon g the guide axis [1]. By this way the FFs are transported to the time-of-f light mass-spectrometer consisted of the microchannel-plates based timing detector and the mosaic of four PIN diodes. The mean time-of-flight of the FFs in the EGS exceeds 400 ns.\nThe peculiarities of the two dimensional FFs mass correlation distributions observed let us to suppose the followin g nature of such peculiarities (linear structures) [2]. Very deformed FF f rom binary ($ɣ\, f$) reaction undergoes a break-up crossing the Lexan foi l of the timing detector due to inelastic Coulomb scattering. It is possib le if the fragment was born in the shape isomer state with a typical life time of more than 400 ns. Earlier\, manifestations of similar process in $ ^{252}$Cf(sf) and $^{235}$U($n$$_{th}$\, $f$) we discussed in Ref. [3].\n\ nhttps://events.sinp.msu.ru/event/8/contributions/573/ LOCATION: Физический факультет\, СФА URL:https://events.sinp.msu.ru/event/8/contributions/573/ END:VEVENT BEGIN:VEVENT SUMMARY:FRACTAL ANALISIS OF Au+Au MONTE CARLO EVENTS AT 200 GEV/c DTSTART;VALUE=DATE-TIME:20220713T141000Z DTEND;VALUE=DATE-TIME:20220713T143000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-572@events.sinp.msu.ru DESCRIPTION:Speakers: Tatiana Dedovich (Joint Institute for Nuclear Resear ch)\nResults of fractal analysis of Au+Au events at the energy of $\\sqrt{ s_{NN}} = 200$ GeV/c by the method of the equation systems of power coveri ngs (SePaC) [1] are presented. A Multi-Phase Transport (AMPT) model [2\,3] to generate events in relativistic heavy ion collisions was used. In Even t-by-Event analysis a distribution on the transverse momentum $p_Т$ of ne gatively charged particles produced in the pseudo-rapidity interval $|\\et a| <0.5$ in the events with different centrality from 0-5% to 30-40% was s tudied.\nThe fractal data set includes 1823 events obtained by independent [4]\, dependent [5]\, and combined [6] partition. Fractal events differ i n multiplicity (from 8 to 1024)\, the base of formation $P_F$ (from 3 to 8 )\, and the type of structures. The criteria characterizing the similarity of structures at different levels and reducing the portion of background events (mixed data\, events with Gaussian\, exponential\, and uniform dist ributions) [7] were used. \nComparison of the Monte Carlo fractals\, rando m events and AMPT events was performed. It was found that the multiplicity distribution for the sets of random events coincides with the distributio n obtained using the AMPT generator. Distribution of fractal events with d ifferent multiplicity on the dimension DF was obtained and their structure is discussed. The results of applying the selection criteria for various types of events are presented.\n\n1. T. G. Dedovich\, M.V. Tokarev\, Phys. Part. Nucl. Lett. 19\, 552 (2011).\n2. Z.W. Lin\, C.M. Ko\, Phys. Rev. C 65\, 034904 (2002).\n3. Z.W. Lin et al.\, Phys. Rev. C 72\, 064901 (2005). \n4. T. G. Dedovich\, M.V. Tokarev\, Phys. Part. Nucl. Lett. 10\, 481 (201 3).\n5. T. G. Dedovich\, M.V. Tokarev\, Phys. Part. Nucl. Lett. 10\, 491 ( 2013).\n6. T. G. Dedovich\, M.V. Tokarev\, Phys. Part. Nucl. Lett. 13\, 16 9 (2016).\n7. T. G. Dedovich\, M.V. Tokarev\, Phys. Part. Nucl. Lett. 18\, 93 (2021).\n\nhttps://events.sinp.msu.ru/event/8/contributions/572/ LOCATION: НИИЯФ\, ЮК\, ауд. 3-13 URL:https://events.sinp.msu.ru/event/8/contributions/572/ END:VEVENT BEGIN:VEVENT SUMMARY:The reprojection method for inelastic collision processes DTSTART;VALUE=DATE-TIME:20220715T124000Z DTEND;VALUE=DATE-TIME:20220715T130000Z DTSTAMP;VALUE=DATE-TIME:20260308T024451Z UID:indico-contribution-8-575@events.sinp.msu.ru DESCRIPTION:Speakers: Andrey Belyaev (Herzen University)\nThe standard Bor n-Oppenheimer approach to theoretical treatments of inelastic collision pr ocesses is the most widely used approach\, despite many other methods have been proposed as well. It solves the problems into two steps: (1) the ele ctronic structure calculations for fixed nuclei\, and (2) nonadiabatic nuc lear dynamical studies based on the potentials and couplings computed at t he first step. Various quantum methods have been developed for the both st eps and applied to a large variety of collisional partners (atoms\, ions\, molecules\, clusters\, etc) and to a huge number of physical processes. The approach looks to be well developed and reliable. \nHowever\, the deta iled analysis shows that the conventional applications of the Born-Oppenhe imer approach encounter severe problems. They are: ambiguity of nonadiabat ic couplings and coupled channel equations\, nonvanishing asymptotic nonad iabatic couplings\, divergence of state-to-state transition probabilities and cross sections with respect to some parameters of problems\, to mentio n a few. The most severe is probably nonzero asymptotic couplings. In the past\, these and other problems have been ignored as being negligible\, an d final results (transition probabilities\, cross sections\, rate coeffici ents) were assumed to have low error bars\, since usual practical calculat ions were performed with a number of approximations. The development of mo dern computer facilities and soft wear allow one to increase accuracy of c alculations. Nevertheless\, Ref. [1] shown that attempts to extend paramet ers of calculations within the conventional application of the Born-Oppenh eimer approach result in divergence instead of expected convergence\, and the results have no sense.\nThe reprojection method [1-3] within the stand ard Born-Oppenheimer approach solves the problems. It treats the nonadiaba tic nuclear dynamics with nonzero asymptotic nonadiabatic coupligs\, as th ey come from ab initio electronic structure calculations. In addition\, th e method distinguishes interatomic and internuclear distances\, as well as the scattering channels and molecular states. It turns out that the nonze ro asymptotic couplings are responsible for correct asymptotic wave functi ons. Moreover\, Ref. [4] shows that the correct asymptotic wave functions can be constructed from the coupled asymptotic solutions of the dynamical equations.\n\n1. A. K. Belyaev\, Phys. Rev. A 82\, 060701 (2010).\n2. J. G rosser\, T. Menzel\, and A. K. Belyaev\, Phys. Rev. A. 59\, 1309 (1999).\n 3. A. K. Belyaev\, D. Egorova\, J. Grosser\, and T. Menzel\, Phys. Rev. A 64\, 052701 (2001).\n4. С. Л. Яковлев\, Е. А. Яревский\ , Н. Эландер и А. К. Беляев\, ТиМФ 195\, 437 (2018).\ n\nhttps://events.sinp.msu.ru/event/8/contributions/575/ LOCATION: Физический ф-т\, ЦФА URL:https://events.sinp.msu.ru/event/8/contributions/575/ END:VEVENT END:VCALENDAR