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SUMMARY:PHOTONUCLEAR REACTIONS: SOME POSSIBILITIES FOR METHODOLOGICAL IMPR
 OVEMENT
DTSTART;VALUE=DATE-TIME:20220713T124500Z
DTEND;VALUE=DATE-TIME:20220713T130500Z
DTSTAMP;VALUE=DATE-TIME:20260414T115137Z
UID:indico-contribution-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/
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