| 252Cf自发裂变谱形对中子反射实验数值模拟的影响 |
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| 引用本文： | 毛孝勇,王敏,温中伟,王玫. 252Cf自发裂变谱形对中子反射实验数值模拟的影响[J]. 原子能科学技术, 2009, 43(8): 688-692. DOI: 10.7538/yzk.2009.43.08.0688 |
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| 作者姓名： | 毛孝勇 王敏 温中伟 王玫 |
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| 作者单位： | 1.北京应用物理与计算数学研究所，北京 ;100088；2.中国工程物理研究院 ;核物理与化学研究所，四川 ;绵阳 ;621900 |
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| 摘 要： | 针对裂变源中子反射实验中涉及到的中子源能谱问题，选取两套用公式拟合、被普遍认可的252Cf自发裂变能谱，分别将其应用于该类实验的数值模拟中。对实验测点的中子注量及裂变反应率进行了对比研究，结果表明，相对于Maxwell谱，Watt谱能更好地与实验结果符合。
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| 关 键 词： | 自发裂变中子源 Maxwell谱 Watt谱 中子注量 裂变反应率 |
| 收稿时间： | 2008-05-29 |
| 修稿时间： | 2008-09-03 |
Structure of Spontaneous Fission Spectrum of 252Cf and Its Impact on Neutron Albedo Experiments' Simulation |
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| MAO Xiao-yong,WANG Min,WEN Zhong-wei,WANG Mei. Structure of Spontaneous Fission Spectrum of 252Cf and Its Impact on Neutron Albedo Experiments' Simulation[J]. Atomic Energy Science and Technology, 2009, 43(8): 688-692. DOI: 10.7538/yzk.2009.43.08.0688 |
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| Authors: | MAO Xiao-yong WANG Min WEN Zhong-wei WANG Mei |
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| Affiliation: | 1.Institute of Applied Physics and Computational Mathematics, P. O. Box 8009, Beijing 100088, China； 2.Institute of Nuclear Physics and Chemistry, ;China Academy of Engineering Physics, Mianyang 621900, China ; |
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| Abstract: | Aimed at the problem of the energy spectrum of spontaneous fission source, which was used in neutron albedo experiments, we selected two sets of 252Cf fission spectra, which were fitted by formulae and were universally accepted. And they were applied in neutron albedo experiments independently. Neutron fluence and fission rate on each detecting point were compared and analyzed. The results show that Watt spectrum agrees the experiment data better than that of Maxwell spectrum. |
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| Keywords: | spontaneous fission neutron source Maxwell spectrum Watt spectrum neutron fluence fission rate |
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