BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN 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:20260519T220753Z UID:indico-contribution-41-620@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: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:20260519T220753Z UID:indico-contribution-41-657@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: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:20260519T220753Z UID:indico-contribution-41-656@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: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:20260519T220753Z UID:indico-contribution-41-636@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:Deep-underwater neutrino telescope Baikal-GVD DTSTART;VALUE=DATE-TIME:20220711T093500Z DTEND;VALUE=DATE-TIME:20220711T101000Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-644@events.sinp.msu.ru DESCRIPTION:Speakers: Grigory Domogatsky (INR RAS)\nThe Baikal-GVD neutrin o telescope is a water Cherenkov detector with a volume of 1 cubic kilomet er constructed in Lake Baikal for the study of natural fluxes of high-ener gy neutrinos. Since April 2022\, the telescope has been operating in a con figuration with 10 clusters consisting of 8 strings of deep-sea optical mo dules (OM) each. The total number of OM\, based on the photomultipliers R7 081-100 with a photocathode with a diameter of 10 inches\, is 2916. Each c luster is an autonomous independent neutrino telescope\, which makes it po ssible to conduct physical research at all stages of the construction of t he Baikal-GVD telescope. Currently Baikal-GVD is the largest neutrino tele scope in the Northern Hemisphere. When analyzing the data obtained during the operation of the detector in the configurations of 2019\, 2020 and 202 1\, the first candidates for events initiated by high-energy neutrinos of astrophysical nature\, were identified. The Baikal-GVD detector is includ ed in the international multichannel notification systems\, in order to se arch for and further study transient astrophysical sources by methods of m ulti-wavelenght and multi-messenger astronomy.\n\nhttps://events.sinp.msu. ru/event/8/contributions/644/ LOCATION: URL:https://events.sinp.msu.ru/event/8/contributions/644/ 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:20260519T220753Z UID:indico-contribution-41-594@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:Limits of nuclear masses and elements DTSTART;VALUE=DATE-TIME:20220711T073000Z DTEND;VALUE=DATE-TIME:20220711T080500Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-646@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:NICA Megascience Project at JINR: Status and Plans DTSTART;VALUE=DATE-TIME:20220711T090000Z DTEND;VALUE=DATE-TIME:20220711T093500Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-629@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:Geant4 status and applications: from HEP to nuclear medicine DTSTART;VALUE=DATE-TIME:20220711T124500Z DTEND;VALUE=DATE-TIME:20220711T132000Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-633@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: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:20260519T220753Z UID:indico-contribution-41-634@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:SUPERNOVA NEUTRINO SPECTRA & OBSERVATIONS BY LARGE VOLUME TELESCOP ES DTSTART;VALUE=DATE-TIME:20220716T081000Z DTEND;VALUE=DATE-TIME:20220716T084500Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-596@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:Structure of heavy nuclei and nucleon-nucleon interaction DTSTART;VALUE=DATE-TIME:20220711T132000Z DTEND;VALUE=DATE-TIME:20220711T135500Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-632@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:MODERN TECHNOLOGIES FOR THE PRODUCTION OF NUCLEAR MEDICINE ISOTOPE S DTSTART;VALUE=DATE-TIME:20220716T095000Z DTEND;VALUE=DATE-TIME:20220716T102500Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-622@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:PARTICLE-HOLE DISPERSIVE OPTICAL MODEL: PAST AND FUTURE DTSTART;VALUE=DATE-TIME:20220714T073000Z DTEND;VALUE=DATE-TIME:20220714T080000Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-599@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:NUCLEAR REACTIONS CONTRIBUTION IN SPACECRAFT ON-BOARD ELECTRONICS FAILURES DTSTART;VALUE=DATE-TIME:20220716T102500Z DTEND;VALUE=DATE-TIME:20220716T110000Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-592@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:PIK reactor complex DTSTART;VALUE=DATE-TIME:20220716T091500Z DTEND;VALUE=DATE-TIME:20220716T095000Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-641@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: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:20260519T220753Z UID:indico-contribution-41-643@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:Status of the MPD@NICA Project DTSTART;VALUE=DATE-TIME:20220716T070000Z DTEND;VALUE=DATE-TIME:20220716T073500Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-642@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: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:20260519T220753Z UID:indico-contribution-41-609@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: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:20260519T220753Z UID:indico-contribution-41-610@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: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:20260519T220753Z UID:indico-contribution-41-607@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:Isotopic dependence of charge and matter radii. DTSTART;VALUE=DATE-TIME:20220714T090000Z DTEND;VALUE=DATE-TIME:20220714T093000Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-608@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: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:20260519T220753Z UID:indico-contribution-41-606@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: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:20260519T220753Z UID:indico-contribution-41-604@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: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:20260519T220753Z UID:indico-contribution-41-603@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: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:20260519T220753Z UID:indico-contribution-41-602@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:GAMOW-TELLER AND ANALOG RESONANCES IN NEUTRON-RICH Sn ISOTOPES DTSTART;VALUE=DATE-TIME:20220714T093000Z DTEND;VALUE=DATE-TIME:20220714T100000Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-601@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: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:20260519T220753Z UID:indico-contribution-41-342@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:CROSSING ROTATIONAL BANDS IN SUPERHEAVY EVEN-EVEN NUCLEI DTSTART;VALUE=DATE-TIME:20220714T080000Z DTEND;VALUE=DATE-TIME:20220714T083000Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-600@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: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:20260519T220753Z UID:indico-contribution-41-598@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:COMPTON DESINTEGRATION OF POSITRONIUM DTSTART;VALUE=DATE-TIME:20220713T101500Z DTEND;VALUE=DATE-TIME:20220713T105000Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-597@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:The JUNO experiment: status and prospects DTSTART;VALUE=DATE-TIME:20220713T094000Z DTEND;VALUE=DATE-TIME:20220713T101500Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-640@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: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:20260519T220753Z UID:indico-contribution-41-593@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: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:20260519T220753Z UID:indico-contribution-41-637@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: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:20260519T220753Z UID:indico-contribution-41-635@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:Opening DTSTART;VALUE=DATE-TIME:20220711T070000Z DTEND;VALUE=DATE-TIME:20220711T073000Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-638@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:NUCLEAR PHYSICS FOR THE WORLD ECONOMY DTSTART;VALUE=DATE-TIME:20220711T080500Z DTEND;VALUE=DATE-TIME:20220711T084000Z DTSTAMP;VALUE=DATE-TIME:20260519T220753Z UID:indico-contribution-41-631@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 END:VCALENDAR