| Analysis of prompt fission neutron spectrum and multiplicity for 237Np（n,f） in the frame of multi-modal Los Alamos model |
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| 引用本文： | 郑娜,丁毅,钟春来,陈金象,樊铁栓.Analysis of prompt fission neutron spectrum and multiplicity for 237Np（n,f） in the frame of multi-modal Los Alamos model[J].中国物理 B,2009,18(4):1413-1420. |
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| 作者姓名： | 郑娜 丁毅 钟春来 陈金象 樊铁栓 |
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| 作者单位： | State Key Laboratory of Nuclear Physics and Nuclear
Technology and School of Physics,
Peking University, Beijing
100871,
China;State Key Laboratory of Nuclear Physics and Nuclear
Technology and School of Physics,
Peking University, Beijing
100871,
China;State Key Laboratory of Nuclear Physics and Nuclear
Technology and School of Physics,
Peking University, Beijing
100871,
China;State Key Laboratory of Nuclear Physics and Nuclear
Technology and School of Physics,
Peking University, Beijing
100871,
China;State Key Laboratory of Nuclear Physics and Nuclear
Technology and School of Physics,
Peking University, Beijing
100871,
China |
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| 基金项目： | Project supported by the State Key
Development Program for Basic Research of China (Grant Nos
2008CB717803 and 2007ID103) and the Research Fund for the Doctoral
Program of Higher Education of China
(Gant No 200610001023). |
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| 摘 要： | The improved version of Los Alamos model with the multi-modal fission approach is used to analyse the prompt fission neutron spectrum and multiplicity for the neutron-induced fission of 237Np. The spectra of neutrons emitted from fragments for the three most dominant fission modes (standard Ⅰ, standard Ⅱ and superlong) are calculated separately and the total spectrum is synthesized. The multi-modal parameters contained in the spectrum model are determined on the basis of experimental data of fission fragment mass distributions. The calculated total prompt fission neutron spectrum and multiplicity are better agreement with the experimental data than those obtained from the conventional treatment of the Los Alamos model.
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| 关 键 词： | 237Np(n f) prompt neutron spectrum neutron multiplicity multi-modal model Los Alamos model |
| 收稿时间： | 2008-12-01 |
Analysis of prompt fission neutron spectrum and multiplicity for 237Np(n, f) in the frame of multi-modal Los Alamos model |
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| Zheng N,Ding Yi,Zhong Chun-Lai,Chen Jin-Xiang and Fan Tie-Shuan.Analysis of prompt fission neutron spectrum and multiplicity for 237Np(n, f) in the frame of multi-modal Los Alamos model[J].Chinese Physics B,2009,18(4):1413-1420. |
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| Authors: | Zheng N Ding Yi Zhong Chun-Lai Chen Jin-Xiang and Fan Tie-Shuan |
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| Institution: | State Key Laboratory of Nuclear Physics and Nuclear Technology and School of Physics, Peking University, Beijing 100871, China |
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| Abstract: | The improved version of Los Alamos model with the multi-modal
fission approach is used to analyse the prompt fission neutron
spectrum and multiplicity for the neutron-induced fission of
237Np. The spectra of neutrons emitted from fragments for the
three most dominant fission modes (standard I, standard II and
superlong) are calculated separately and the total spectrum is
synthesized. The multi-modal parameters contained in the spectrum
model are determined on the basis of experimental data of fission
fragment mass distributions. The calculated total prompt fission
neutron spectrum and multiplicity are better agreement with the
experimental data than those obtained from the conventional
treatment of the Los Alamos model. |
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| Keywords: | 237Np(n f) prompt neutron
spectrum neutron multiplicity multi-modal model Los Alamos model |
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