Final Report of Subgroup 7 Nuclear Data Standards An International Evaluation of the Neutron Cross Section Standards

Abstract

Work is reported on the results of an international evaluation of the neutron cross section standards. The evaluations include the H(n,n), Li(n,t), B(n,α), B(n,α1γ), Au(n,γ), U(n,f), and U(n,f) standard reactions. In addition evaluations were produced for the non-standard U(n,γ) and Pu(n,f) reactions. This evaluation was performed to include new experiments on the standards that have been made since the ENDF/B-VI standards evaluation was completed and to improve the evaluation process. Evaluations were not done for the He(n,p) and C(n,n) standards. These standards will be carried over from ENDF/B-VI. The interest in standards above 20 MeV led to the extension of the U(n,f) and U(n,f) cross sections to 200 MeV. The Pu(n,f) cross section was also extended to 200 MeV. The general trend observed for the evaluations is an increase in the cross sections for most of the reactions from fractions of a percent to several percent compared with the ENDF/B-VI results.

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Cite this paper

@inproceedings{Badikov2006FinalRO, title={Final Report of Subgroup 7 Nuclear Data Standards An International Evaluation of the Neutron Cross Section Standards}, author={Sergey A Badikov and Ann D. Carlson and Zhiling Chen and E. V. Gai and Gerald M. Hale and J{\"{o}rg Hambsch and Hartmut M. Hofmann and Toshihiko Kawano and Nancy Larson and Sei Yeol Oh and V. G. Pronyaev and Douglas L. Smith and S. Tagesen and H. Vonach}, year={2006} }