| MA Li-yong,SUN Ji-ning,ZHENG Na,ZHONG Chun-lai,LIU Ting-jin,FAN Tie-shuan.Evaluation of dependence of cumulative fission yields on incident-neutron energy for 239Pu (n, f)[J].Chinese Journal of Radiological Medicine and Protection,2010,30(2):120-123 |
| Evaluation of dependence of cumulative fission yields on incident-neutron energy for 239Pu (n, f) |
| Received:March 19, 2009 |
| DOI： |
| KeyWords:239Pu Gas nuclides Cumulative yield Energy dependence of yield |
| FundProject:国家973项目(2009GB107001,2008CB717803);高等学校博士点专项科研基金(200610001023) |
| Author Name | Affiliation | E-mail | | MA Li-yong | State Key Laboratory of Nuclear Physics and Nuclear Technology and School of Physics, Peking University, Beijing 100871, China | | | SUN Ji-ning | State Key Laboratory of Nuclear Physics and Nuclear Technology and School of Physics, Peking University, Beijing 100871, China | | | ZHENG Na | State Key Laboratory of Nuclear Physics and Nuclear Technology and School of Physics, Peking University, Beijing 100871, China | | | ZHONG Chun-lai | State Key Laboratory of Nuclear Physics and Nuclear Technology and School of Physics, Peking University, Beijing 100871, China | | | LIU Ting-jin | 中国核数据中心 | | | FAN Tie-shuan | State Key Laboratory of Nuclear Physics and Nuclear Technology and School of Physics, Peking University, Beijing 100871, China | tsfan@pku.edu.cn |
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| Abstract:: |
| Objective To study the dependence of cumulative fission yields on incident-neutron energy for 239Pu (n,f). Methods The experimental yield data were evaluated by using codes AVERAGE for weighted average and ZOTT for simultaneous evaluation. The multi-modal model was used to calculate the energy dependence of yields.Results The experimental yield data were evaluated at different neutron energies for gas fission products 85Krm, 87Kr, 88Kr and 138Xe resulting from the 239Pu (n, f) reaction. The energy dependence of the cumulative fission product yields on the incident neutron was presented and recommended. The evaluated curves of product yield versus neutron energy were compared with the results calculated by the TALYS code.Conclusions The energy curves of yield showed the rising trend for 87Kr and 88Kr, but the linear functions for 85Krm and 138Xe. The multi-modal model calculation may qualitatively describe the energy dependence of yields for the 239Pu (n,f) reaction. |
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