Measurement of uranium mass and enrichment by time correlation coincidence method

LIANG Qinglei; LI Jinghuai; LIU Guorong; LI Anli

doi:10.11889/j.0253-3219.2014.hjs.37.020202

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Measurement of uranium mass and enrichment by time correlation coincidence method

更新时间：2021-03-03

- Measurement of uranium mass and enrichment by time correlation coincidence method
- NUCLEAR TECHNIQUES Vol. 37, Issue 2, Article number: 020202(2014)
- 作者机构：
  
  中国原子能科学研究院,北京,102413
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2014.hjs.37.020202
  CLC：
- Published：19 February 2014
- 稿件说明：
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LIANG Qinglei, LI Jinghuai, LIU Guorong, et al. Measurement of uranium mass and enrichment by time correlation coincidence method[J]. Nuclear techniques, 2014, 37(2): 020202
DOI：

LIANG Qinglei, LI Jinghuai, LIU Guorong, et al. Measurement of uranium mass and enrichment by time correlation coincidence method[J]. Nuclear techniques, 2014, 37(2): 020202 DOI： 10.11889/j.0253-3219.2014.hjs.37.020202.

摘要

核材料尤其是高浓铀材料一直是人们重点关注的对象，越来越多的方法和技术手段用来探测其质量和富集度的信息，而重屏蔽体内高浓铀材料质量和富集度的测量是一项技术性的难题。为此，利用14 MeV中子和14 MeV中子慢化后得到的连续中子能谱来探测铅容器内铀材料质量和富集度的信息，结果如下：在低富集度的范围内，相同富集度的铀样品质量之间存在良好的线性关系；相同质量的铀样品富集度之间也存在良好的线性关系，这为将来探测重屏蔽体内铀材料质量和富集度的信息提供了很好的方法基础。

Abstract

Background: Nuclear materials especially highly enriched uranium materials attract more and more attentions

and increasing methods and technical means are used to detect its information of mass and enrichment. Purpose: In order to solve the key technique problem of measuring the mass and enrichment of highly enriched uranium materials in the heavy shielded containers

a novel trial method was proposed in the paper. Methods: Time correlation coincidence method was implemented by using 14-MeV neutrons and continuous spectrum neutrons obtained by moderating 14-MeV neutrons to interrogate uranium materials inside of lead container with different mass and enrichment. Results: Within the certain range of low enrichment

the relation of different uranium samples mass of same enrichment was linear

and so was the relation of different uranium samples enrichment of same mass. Conclusion: Time correlation coincidence method might be an effective solution to measure the mass and enrichment of uranium materials in the heavy shielded container in the future.Cited

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Related Institution

Shanghai Institute of Applied Physics, Chinese Academy of Sciences

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