11-16 July 2022
Europe/Moscow timezone
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ENERGY DEPENDENCE OF TOTAL REACTION CROSS SECTIONS FOR ISOTOPES OF Be ON TARGETS ${}^{28}$Si, ${}^{59}$Co, ${}^{181}$Ta

12 Jul 2022, 12:10
20m
Физический факультет, СФА

Физический факультет, СФА

Oral talk (15 min + 5 min questions) Experimental and theoretical studies of nuclear reactions

Speaker

Sergey Stukalov (JINR, Dubna, Russia)

Description

Energy dependence 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 registration 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 sections are presented.

The values of σ${_{\rm{R}}}$ were calculated taking into account:

  1. the mean detection efficiency <ε> of the 4π-spectrometer, which does not depend on γ-multiplicity M${_{{\gamma}}}$ [2];
  2. the distribution of the numbers of triggered detectors during registration of the cascades of particles at a fixed value of multiplicity M${_{{\gamma}}}$.

Measurement of the detection efficiency ε(M${_{{\gamma}}}$) for various values of γ-multiplicity M${_{{\gamma}}}$ was carried out using the method described in [3].

  1. Yu.G. Sobolev, Yu.E. Penionzhkevich, V.V. Samarin, M.A. Naumenko, S.S. Stukalov, I. Siváček, S.A. Krupko, A. Kugler, and J. Louko, Bull. Russ. Acad. Sci.: Phys. 84, 948 (2020).
  2. Yu.E. Penionzhkevich, Yu.G. Sobolev, V.V. Samarin, and M.A. Naumenko, Phys. Atom. Nucl. 80, 928 (2017).
  3. 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).
The speaker is a student or young scientist Yes
Section 2. Experimental and theoretical studies of nuclear reactions

Primary author

Sergey Stukalov (JINR, Dubna, Russia)

Co-authors

Dr Yuri Sobolev (JINR) Prof. Yuri Penionzhkevich (Joint Institute for Nuclear Research) Viacheslav Samarin (Joint Institute for Nuclear Research) Dr Mikhail Naumenko (JINR, Dubna) Mr Ivan Sivacek (JINR, NPIASCR)

Presentation Materials