Evaluation of neutron nuclear data on antimony isotopes

Shibata, Keiichi

Neutron nuclear data on Sb have been evaluated for the next release of JENDL general purpose file in the energy region from 10 eV to 20 MeV. For Sb, the latest resolved resonance parameters were considered. The thermal capture cross sections of Sb, for which no measurements exist, were determined by using a simplified formula. The statistical model was applied to calculate the cross sections above the resolved resonance region. In the calculations, coupled-channel optical model parameters were used for the interaction between neutrons and odd-mass targets. Preequilibrium and direct-reaction processes were taken into account in addition to the compound process. The present evaluation is consistent with available experimental data. The evaluated results are compiled into an ENDF-formatted data file.