https://doi.org/10.1051/epjconf/202429208004
Prompt-fission observable and fission yield calculations for actinides by TALYS
1 Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, 152-8550, Tokyo, Japan
2 Department of Physics and Astronomy, Uppsala University, S-751 20, Uppsala, Sweden
3 CEA-DAM Île-de-France, Bruyères-le-Châtel, 91297, Arpajon Cedex, France
4 NAPC-Nuclear Data Section, International Atomic Energy Agency, Vienna International Centre, 1400, Vienna, Austria
5 NAT Research Center, NAT Corporation, 3129-45 Hibara, Muramatsu, Tokai-mura, Naka-gun, 319-1112, Ibaraki, Japan
* e-mail: fujio.k.aa@m.titech.ac.jp
Published online: 14 March 2024
The nuclear reaction code TALYS adopts the Hauser-Feshbach statistical decay theory, to de-excite fission fragments. This involves for instance the evaporation of prompt fission neutrons and γ-rays. TALYS incorporates databases of primary fission fragment distribution which consists of primary fission fragment yield and data for excitation energy distribution of fission fragments. We conducted a sensitivity study on three parameters in TALYS and fitted them in order to reproduce experimental and evaluated data, in thermal neutron-induced fission of 235U. Moreover, we demonstrate a large-scale calculation of average prompt neutron and γ-ray multiplicities for 243 selected actinide isotopes.
© The Authors, published by EDP Sciences, 2024
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.
