High-precision prompt fission gamma-ray studies for nuclear reactor safety

In recent years the study of the nuclear fission process has gained a renewed interest, not at last motivated by nuclear data needs for future reactor applications. Among those demands for improved nuclear data, prompt fission gamma ray spectra characteristics from the neutron-induced fission of 235U and 239Pu are explicitly mentioned in form of high priority request lists by the OECD/NEA. Those isotopes are the most important ones with respect to reactor fuels and precise knowledge about prompt gamma ray emission is necessary for the assessment of gamma heating in e.g. Generation IV reactor systems currently being developed. In this work we present recent results for average multiplicity, total gamma-ray energy released in fission and mean energy per photon from spontaneous as well as thermal- and fast-neutron induced fission of different actinide nuclei and give an outlook on future activities that include photon-induced fission experiments at ELI-NP in Bucharest-Magurele, Romania.

CHOUDHURY Deepika;  GATERA Angelique;  GÖÖK Alf;  LEBOIS M.;  OBERSTEDT A.;  OBERSTEDT Stephan;  QI Liqiang;  WILSON Jonathan; 

2018-01-05

Publishing House of University of Pitesti

JRC106775

2247-191X,   

http://www.jnrd-nuclear.ro/images/JNRD/No.14/jnrd_143_art3.pdf,    https://publications.jrc.ec.europa.eu/repository/handle/JRC106775,