https://doi.org/10.1051/epjconf/202328403010
Re-examining intermediate resonant structures in the 242Pu fission cross section
1 Institut Pluridisciplinaire Huber Curien, 23 rue du Loess, 67200 Strasbourg, France
2 CEA, DES/IRESNE/DER/SPRC/LEPh, 13008 Saint Paul Lez Durance, France
3 National Technical University of Athens, Department of Physics, Zografou Campus, Athens, Greece
4 Laboratoire de Physique des 2 infinis, 33170 Gradignan, France
* Corresponding author: carole.chatel@iphc.cnrs.fr
Published online: 26 May 2023
The study of the 242Pu fission cross section has become more important since this isotope is present in Pressurized Water Reactor Uranium Oxide and Mixed Oxide fuel, as well as in fast neutron reactors fuel. This nucleus has been also selected for monitoring the high neutron flux RJH reactor (CEA-Cadarache). For all these reasons, the fission cross section structure of this fertile isotope, and especially its class-II states resonances were investigated in this work. Two class-II states have been identified in the Resolved Resonance Range (RRR) and their parameters have been supplied to the CONRAD code. 68 class- II states have been identified in the Unresolved Resonant Range (URR) and their parameters have been added in the TALYS code data library to reproduce as well as possible the experimental fission cross section. The methodology to identify and insert the class-II states in RRR and URR is described here.
© The Authors, published by EDP Sciences, 2023
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.
