<sup>252</sup>Cf源驱动噪声分析核材料富集度判别方法

杨帆; 魏彪; 米德伶; 任勇; 周密

²⁵²Cf源驱动噪声分析核材料富集度判别方法

1.
重庆大学光电技术及系统教育部重点实验室, 重庆 400044

基金项目:

面向核军控核查的主动式多通道随机中子脉冲实时频谱分析应用基础研究

详细信息

通讯作者:
杨帆

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出版历程
- 收稿日期: 2012-02-27
- 刊出日期: 2012-05-15

Nuclear material enrichment estimation based on ²⁵²Cf source-driven noise analysis

1.
Key Laboratory of Optoelectronics Technology and Systems,Ministry of Education,Chongqing University,Chongqing 400044,China

摘要

摘要: 针对探测器通道和待测核材料探测通道之间相对几何位置与待测核材料富集度变化之间的相互关系问题，开展了基于探测通道间协方差幅值进行核材料富集度判别的研究工作。实验中，选取富集度分别为85.15%，90.15%和93.15%的235U核材料，模拟研究了多个位置不同的探测通道所得到的协方差运算结果。研究结果表明:随着235U核材料富集度的增加，互相关的幅值也随之增大并与国外文献结果相吻合，率先在国内证明了基于探测器相对几何位置变化的探测通道互相关幅值可以推断核材料富集度的可行性。
- 源驱动噪声分析法 /
- 核材料 /
- 富集度 /
- 协方差
Abstract: The paper investigates the relationship between the change of nuclear sample enrichment and the relative position of detectors of the 252Cf source-driven noise analysis system. A Monte Carlo numerical simulation with varied 235U enrichment (85.15%, 90.15%, 93.15%) and different relative positions has been conducted, and the cross-covariance between data of paired detectors was calculated. The results show that the amplitude of cross-covariance improves with 235U enrichment, which coincides with reference results. Thus it is feasible to estimate the nuclear material enrichment based on the cross-covariance amplitude of detectors.
- source-driven noise analysis /
- nuclear material /
- enrichment /
- covariance

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参考文献(1)

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