Abstract
A nuclear data library has been created for medium energy neutron transport calculations. The 60-group library includes P5 cross sections in standart LASL format for H, B, C, N, O, Si, Fe and W. The 60-group structure was chosen from a sensitivity analysis of a thick iron shield calculated with a 50 MeV deuteron-on-beryllium neutron source spectrum and a 121-group cross-section set. The library combines processed ENDF/B-IV cross-section data below 20 MeV and higher energy cross-section parameters calculated with the intranuclear-cascade and evaporation model. A 6-group version of the library is used in the design of a shield-collimator unit for fast neutron radiotherapy. While the shield is specific for the 50 MeV d+ -Be neutron source presently used in cancer therapy at Texas A&M University, the cross sections and methods developed are applicable to the problems of medium energy neutron shielding in general.
Wilson, William Bradley (1977). Nuclear data development and shield design for neutrons below 60 MeV. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -357110.