Recent advances in nuclear fission theory: pre- and post-scission physics

Conference · Fri Jan 01 00:00:00 EST 2010

DOI:https://doi.org/10.3938/jkps.59.797· OSTI ID:1012636

Talou, Patrick ^[1]; Kawano, Toshihiko ^[1]; Bouland, Olivier ^[1]; Moller, Peter ^[1]; Chadwick, Mark B ^[1]; Lynn, J E ^[2]

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1. Los Alamos National Laboratory
2. CEA DEN FRANCE

Recent advances in the modeling of the nuclear fission process for data evaluation purposes are reviewed. In particular, it is stressed that a more comprehensive approach to fission data is needed if predictive capability is to be achieved. The link between pre- and post-scission data is clarified, and a path forward to evaluate those data in a consistent and comprehensive manner is presented. Two examples are given: (i) the modeling of fission cross-sections in the R-matrix formalism, for which results for Pu isotopes from 239 to 242 are presented; (ii) the modeling of prompt fission neutrons in the Monte Carlo Hauser-Feshbach framework. Results for neutron-induced fission on {sup 235}U are discussed.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1012636
• Report Number(s): LA-UR-10-03259; LA-UR-10-3259; TRN: US1102347
• Resource Relation: Journal Volume: 59; Journal Issue: 2(3); Conference: Proceedings of the International Conference on Nuclear Data for Science & Technology ND2010 ; April 26, 2010 ; Jeju, Island, Korea
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CROSS SECTIONS
EVALUATION
FISSION
FISSION NEUTRONS
PHYSICS
R MATRIX
SIMULATION