STP956: Spectrum Integrated (n,He) Cross Section Comparison and Least Squares Analysis for 6Li and 10B in Benchmark Fields

    Schenter, RE
    Fellow scientist, Westinghouse Hanford Co., Richland, WA

    Oliver, BM
    Scientist and manager, Rockwell International, Canoga Park, CA

    Farrar, H
    Scientist and manager, Rockwell International, Canoga Park, CA

    Pages: 7    Published: Jan 1987


    Abstract

    Spectrum integrated cross sections for 6Li and 10B from five benchmark fast reactor neutron fields are compared with calculated values obtained using the ENDF/B-V Cross Section Files. The benchmark fields include the Coupled Fast Reactivity Measurements Facility (CFRMF) at the Idaho National Engineering Laboratory, the 10% Enriched U-235 Critical Assembly (BIG-10) at Los Alamos National Laboratory, the Sigma Sigma and Fission Cavity fields of the BR-1 reactor at CEN/SCK, and the Intermediate-Energy Standard Neutron Field (ISNF) at the National Bureau of Standards.

    Results from least square analyses using the FERRET computer code to obtain adjusted cross section values and their uncertainties are presented. Input to these calculations include the above five benchmark data sets. These analyses indicate a need for revision in the ENDF/B-V files for the 10B cross section for energies above 50 keV.

    Keywords:

    10, B, 6, Li, integral cross sections, benchmark fields, neutrons, adjusted cross sections


    Paper ID: STP25693S

    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP25693S


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