https://doi.org/10.1051/epjconf/202124709003
MEASUREMENT OF 182,184,186W (N, N’ γ) CROSS SECTIONS AND WHAT WE CAN LEARN FROM IT
Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France ghenning@iphc.cnrs.fr
1. Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France.
2. Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
3. IAEA, Nuclear Data Section, Vienna, Austria.
4. European Commission, Joint Research Centre, B-2440 Geel, Belgium.
5. CEA, DAM, DIF, F-91297 Arpajon, France.
6. Theoretical Division,Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
Published online: 22 February 2021
Today’s development of nuclear installations rely on numerical simulation for which the main input are evaluated nuclear data. Inelastic neutron scattering (n, xn) is a reaction of importance because it modifies the neutron population, the neutron energy distribution and may create new isotopes. The study of this reaction on tungsten isotopes is interesting because it is a common structural material. Additionally, tungsten isotopes are a good testing field for theories. The IPHC group started an experimental program with the GRAPhEME setup installed at the neutron beam facility GELINA to measure (n, xn γ) reaction cross sections using prompt gamma spectroscopy and neutron energy determination by time-of-flight. The obtained experimental data provide constraints on nuclear reaction mechanisms models for 182,184,186W. Indeed, to reproduce correctly the experimental (n, n’ γ) cross-sections, the reaction codes must include accurate models of the reaction mechanism, nuclear de-excitation process and use correct nuclear structure information.
Key words: Neutron / nuclear reaction / reaction mechanism / neutron inelastic scattering / tungsten
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
