Description: Analysis of the CORE 14 ThO/sub 2/ axial blanket experiment has produced the following results: The EIR and ORNL ENDF/B-4 data libraries produce similar central reaction rates (+-3% difference) except for the significantly higher /sup 232/Th (n, 2n) rate obtained using ORNL ENDF/B-4 data. Both libraries underpredict the central /sup 232/Th capture and fission rates with C/E values of 0.93 to 0.96 and 0.88 to 0.90 for C2/F9 and F2/F9, respectively. ENDF/B-5 thorium data produce significantly lower capture rates (-7%) and better fission and (n, 2n) rates (+5% and -6%, respectively) relative to ENDF/B-4 data. The central C/E values were insensitive to the theory and modeling approximations investigated; however, the weighting spectrum utilized in the cross section collapse must be properly matched to the calculated broad-group spectrum.
Date: January 1, 1980
Creator: Bartine, D.E. & Hamilton, C.J.
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