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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2025 Volume 121, Issue 7, Pages 525–534 (Mi jetpl7476)

FIELDS, PARTICLES, AND NUCLEI

Measurement of the anisotropy of the angular distributions of fragments and the cross section for the neutron-induced fission of $^{242}$Pu nuclei in the energy range of $0.3$$500$ MeV

A. S. Vorobyeva, A. M. Gagarskia, O. A. Shcherbakova, L. A. Vaishnenea, A. M. Tiagelskaiaa, N. M. Olkhovicha, A. L. Barabanovbc, T. E. Kuz'minad

a Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute, 188300, Gatchina, Russia
b National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409, Moscow, Russia
c National Research Center Kurchatov Institute, 123182, Moscow, Russia
d RPA 'V.G. Khlopin Radium Institute', St. Petersburg

Abstract: The angular distributions of fragments and the cross section for the neutron-induced fission of $^{242}$Pu nuclei in the energy range of $0.3$$500$ MeV have been measured using the time-of-flight spectrometer of the GNEIS neutron complex at the Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute. Fission fragments have been detected using low-pressure position-sensitive multiwire proportional counters. The $^{242}$Pu $(n,f)$ fission cross section has been measured with respect to the $^{235}$U $(n,f)$ fission cross section. The data obtained are compared to the results of previous experiments, as well as to estimates from various evaluated data libraries.

Received: 13.02.2025
Revised: 13.02.2025
Accepted: 24.02.2025

DOI: 10.31857/S0370274X25040018


 English version:
Journal of Experimental and Theoretical Physics Letters, 2025, 121:7, 497–505


© Steklov Math. Inst. of RAS, 2025