| 有源符合中子法探测高浓缩铀的技术研究 |
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| 引用本文： | 赵德山,陈琦,陈想林. 有源符合中子法探测高浓缩铀的技术研究[J]. 核电子学与探测技术, 2004, 24(6): 726-728 |
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| 作者姓名： | 赵德山 陈琦 陈想林 |
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| 作者单位： | 中国工程物理研究院,四川绵阳919信箱71分箱,621900;中国工程物理研究院,四川绵阳919信箱71分箱,621900;中国工程物理研究院,四川绵阳919信箱71分箱,621900 |
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| 摘 要： | 开展了有源符合中子法探测^235U富集度为90．34％的小圆柱状金属铀块裂变材料的方法与技术研究。使用有源井型中子符合计数装置测量金属铀块中^235U受Am-Li中子源诱发后产生的裂变中子，运用最小二乘法的计算方法将测得的中子总计数率、真符合计数率分别与金属铀块质量做线性拟合，其线性相关性系数达0．999；在此基础上，进一步测量了在相同质量金属铀的条件下不同源、样距及不同样品形状的中子计数变化趋势。
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| 关 键 词： | 有源符合中子法 浓缩铀 裂变中子 |
| 文章编号： | 0258-0934(2004)06-0726-03 |
| 修稿时间： | 2003-09-21 |
The study on the detecting technique of high-enrichment uranium by active coincidence neutron count |
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| ZHAO De-shan,CHEN Qi,CHEN Xiang-lin. The study on the detecting technique of high-enrichment uranium by active coincidence neutron count[J]. Nuclear Electronics & Detection Technology, 2004, 24(6): 726-728 |
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| Authors: | ZHAO De-shan CHEN Qi CHEN Xiang-lin |
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| Abstract: | A small column of Uranium fission material, which contains 90. 34%235U, is detected by active coincidence neutron counting in this study. An active well coincidence counter is used to measure the fission neutrons from 235U induced by Am-Li neutron source. The linear correlation coefficient comes to 0. 999 after a linear recombination is performed between the mass of uranium metal and real coincidence counts rate, total neutron counts rate calculated by least square method respectively. Fur-ther more, it is determined the trend of neutron counts varying with different sample shapes, the distances between neutron source and sample while keeping the Uranium quality a constant. |
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| Keywords: | active coincidence neutron counting high-enrichment fission neutron |
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