Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Evaluation of Neutron Cross Sections for Eu-153, Gd-155 and Gd-157

  • Lee, Y. D. (Korea Atomic Energy Research Institute) ;
  • J. H. Chang (Korea Atomic Energy Research Institute)
  • Published : 2003.02.01
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Abstract

The neutron induced nuclear data for Eu-153, Gd-155 and Cd-157 are calculated and evaluated in the high energy region. The evaluation procedure for deformed nuclei is setup by using Ecis-Empire codes. The energy dependent optical model potential parameters are searched based on the recent experimental data and applied up to 20 MeV. Optical model, full featured Hauser-Feshbach model and multistep direct and multistep compound model are used in the calculation. The direct-semidirect capture model and the direct coupled-channels contribution to discrete levels are introduced to improve the capture and inelastic scattering cross sections. The theoretically calculated cross sections are compared with the experimental data and the evaluated files. The model-calculated total and capture cross sections are in good agreement with the reference experimental data. The evaluated cross section results are compiled to ENDF-6 format and are expected to improve the ENDF/B-Vl.

Keywords

References

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