A PRACTICAL EFFECT OF THE RECENT O16 CROSS SECTION AND MUBAR UNCERTAINTIES

With the recent release of ENDF/B VIII.0 data, additional covariance data was provided for many isotopes, including O16. The detail elastic scattering and mubar O16 increased dramatically between VII.1 VIII.0. This new has been processed with NJOY2016 investigation begun on effects these uncertainty data. uncertainties are applied to multi-group cross sections P1 Legendre components in deterministic neutron transport. A simple but typical application shielding fission neutrons concrete used assess practical somewhat surprising result is that can have a significant effect calculated criticality results.