239Pu Resonance Evaluation for Thermal Benchmark System Calculations

Conference · Tue Jan 01 00:00:00 EST 2013

OSTI ID:1110917

Leal, Luiz C ^[1]; Noguere, G ^[2]; De Saint Jean, C ^[2]; Kahler, A. ^[3]

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1. ORNL
2. French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance
3. Los Alamos National Laboratory (LANL)

Analyses of thermal plutonium solution critical benchmark systems have indicated a deciency in the 239Pu resonance evaluation. To investigate possible solutions to this issue, the Organisation for Economic Co-operation and Development (OECD) Nuclear Energy Agency (NEA) Working Party for Evaluation Cooperation (WPEC) established Subgroup 34 to focus on the reevaluation of the 239Pu resolved resonance parameters. In addition, the impacts of the prompt neutron multiplication (nubar) and the prompt neutron ssion spectrum (PFNS) have been investigated. The objective of this paper is to present the results of the 239Pu resolved resonance evaluation eort.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1110917
• Resource Relation: Conference: International Conference on Nuclear Data for Science and Technology (ND 2013), New York, NY, USA, 20130304, 20130308
• Country of Publication: United States
• Language: English