Evaluation of Neutron Cross Sections for Sm-150 and Sm-151

The neutron induced nuclear data for Sm-150 and Sm-151 was calculated and evaluated from unresolved region to 20 MeV. The process of evaluation for deformed nuclei was setup in Ecis-Empire combination. The energy dependent optical model potential based on the recent experimental data was applied up to 20 MeV. Optical model, full featured Hauser-Feshbach model, multistep direct and multistep compound model were used in the calculation. The direct-semidirect capture model and the direct coupled-channels contribution to discrete levels were introduced to improve capture and inelastic scattering cross sections. The theoretically calculated cross sections were compared with the experimental data and the evaluated files. The model calculated total and capture cross sections were in good agreement with the reference experimental data. The evaluated cross section results were compiled to ENDF-6 format and will improve the ENDF/B-VI. (author)