STEW: A Nonlinear Data Modeling Computer Program

Chen, H.

Lawrence Livermore National Laboratory

关键词: Fission;    72 Physics Of Elementary Particles And Fields;    71 Classical And Quantum Mechanics, General Physics;    Neutrons;    Cross Sections;   

DOI  :  10.2172/792692
RP-ID  :  UCRL-ID-138276
RP-ID  :  W-7405-Eng-48
RP-ID  :  792692

美国|英语

来源: UNT Digital Library

【 摘 要 】

A nonlinear data modeling computer program, STEW, employing the Levenberg-Marquardt algorithm, has been developed to model the experimental {sup 239}Pu(n,f) and {sup 235}U(n,f) cross sections. This report presents results of the modeling of the {sup 239}Pu(n,f) and {sup 235}U(n,f) cross-section data. The calculation of the fission transmission coefficient is based on the double-humped-fission-barrier model of Bjornholm and Lynn. Incident neutron energies of up to 5 MeV are considered.