| 镝活化法测量低产额脉冲中子 |
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| 引用本文： | 王新华,牟云峰,安力,郭海萍,朱传新,陈渊. 镝活化法测量低产额脉冲中子[J]. 原子能科学技术, 2007, 41(5): 533-536. DOI: 10.7538/yzk.2007.41.05.0533 |
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| 作者姓名： | 王新华 牟云峰 安力 郭海萍 朱传新 陈渊 |
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| 作者单位： | 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： | 设计一个快中子聚乙烯慢化体，用来慢化加速器的d-T和d-D中子，利用164Dy(n,γ)165Dym在热中子区极高的反应截面，得到半衰期为75s的165Dym，使用HPGe探测器测量165Dym放出的γ射线。由于测得的γ射线与加速器的中子产额成一定比例，故通过这种方法可测量脉冲中子源的中子产额。
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| 关 键 词： | 164Dy(n,γ)165Dym')" >164Dy(n,γ)165Dym, 活化, 中子产额 |
| 文章编号： | 1000-6931（2007）05-0533-04 |
| 收稿时间： | 2006-04-20 |
| 修稿时间： | 2006-04-20 |
Measurement of Low-Yield Pulse Neutron by Dy Activation |
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| WANG Xin-hua,MOU Yun-feng,AN Li,GUO Hai-ping,ZHU Chuan-xin,CHEN Yuan. Measurement of Low-Yield Pulse Neutron by Dy Activation[J]. Atomic Energy Science and Technology, 2007, 41(5): 533-536. DOI: 10.7538/yzk.2007.41.05.0533 |
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| Authors: | WANG Xin-hua MOU Yun-feng AN Li GUO Hai-ping ZHU Chuan-xin CHEN Yuan |
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| Affiliation: | nstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O.Box 919-213, Mianyang 621900, China |
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| Abstract: | A polyethylene moderator was designed for moderating d-T and d-D neutrons from neutron generator. The cross-section of 164Dy(n,γ)165Dym is very large for the thermal neutron, so that lots of 165Dym are produced in the moderator. The half life of 165Dym is 75 s, and it emits ample gamma rays. The gamma rays were measured by HPGe detector. The amount of γ-ray is proportional to the neutron yield, hence the yield of pulse neutron source can be measured. |
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| Keywords: | 164Dy(n γ) 165Dym activation neutron yield |
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