https://doi.org/10.1140/epja/s10050-024-01334-2
Regular Article - Experimental Physics
Measurement of the neutron-induced fission cross section of 
Am relative to 
U in the neutron energy range of 0.3–500 MeV and its analysis
1
B.P. Konstantinov Petersburg Nuclear Physics Institute of National Research Center “Kurchatov institute”, 188300, Gatchina, Leningrad Region, Russia
2
National Research Center “Kurchatov institute”, 123182, Moscow, Russia
3
National Research Nuclear University MEPhI, 115409, Moscow, Russia
4
JSC “V.G. Khlopin Radium Institute”, Rosatom State Atomic Energy Corporation, 194021, St. Petersburg, Russia
Received:
29
December
2023
Accepted:
7
May
2024
Published online:
29
May
2024
The Am fission cross section was measured for incident neutron energies from 0.3 MeV to 500 MeV on the time-of-flight spectrometer of the neutron complex GNEIS at the NRC “Kurchatov Institute” – PNPI. Fission fragments were registered using position-sensitive low-pressure multiwire counters, which made it possible to simultaneously measure the angular distributions of fission fragments. As a result of processing these distributions, the energy dependence of the angular anisotropy of fission fragments of Am in a wide range of neutron energies was determined for the first time. The cross section of Am(n, f) was measured relative to the U(n, f) cross section. The obtained data are compared with the results of other experimental works. Theoretical estimates for the fission cross section and anisotropy of angular distribution of fission fragments for the Am(n, f) reaction are presented and discussed.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
