| 75As中子辐射俘获截面的实验测量及蒙特卡罗修正 |
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| 引用本文： | 史淑廷,罗小兵,王磊.75As中子辐射俘获截面的实验测量及蒙特卡罗修正[J].原子核物理评论,2007,24(1):29-33. |
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| 作者姓名： | 史淑廷 罗小兵 王磊 |
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| 作者单位： | 四川大学原子核科学与技术研究所, 四川 成都 610065 |
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| 摘 要： | 在四川大学2.5 MV静电加速器上， 用活化法测量了29—1 100 keV 能区中子引起的75As(n， γ)76As反应截面， 并用MCNP 4C程序对实验中由中子的多次散射、 注量率衰减效应等引起的偏差进行了修正， 最后将所得结果与已有数据进行了比较。 We have measured the neutron radiative capture cross section of 75As in the energy range of En=29—1 100 keV using the activation technique at 2.5 MV electrostatic accelerator of Sichuan University. The experimental data were then corrected for multiple scattering and self shielding effects with MCNP 4C code. We also compared our results， with the existing measurement， calculation and evaluated data in ENDF/B Ⅵ.
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| 关 键 词： | 75As中子辐射俘获截面 多次散射 注量率衰减 蒙特卡罗修正 |
| 文章编号： | 1007-4627（2007）01-0029-05 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 2006-07-10 |
Measurement and Monte-Carlo Correction of Neutron Radiative Capture Cross Section for 75As |
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| SHI Shu-ting,LUO Xiao-bing,WANG Lei.Measurement and Monte-Carlo Correction of Neutron Radiative Capture Cross Section for 75As[J].Nuclear Physics Review,2007,24(1):29-33. |
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| Authors: | SHI Shu-ting LUO Xiao-bing WANG Lei |
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| Institution: | Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China |
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| Abstract: | We have measured the neutron radiative capture cross section of 75As in the energy range of En=29—1 100 keV using the activation technique at 2.5 MV electrostatic accelerator of Sichuan University. The experimental data were then corrected for multiple scattering and self shielding effects with MCNP 4C code. We also compared our results， with the existing measurement， calculation and evaluated data in ENDF/B Ⅵ. |
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| Keywords: | 75As neutron radiative capture cross section multiple scattering attenuation of neutron fluence rate Monte-Carlo correction |
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