<sup>240</sup>Pu丰度计算的γ能谱分析方法

胡广春; 向永春; 伍怀龙; 郝樊华; 龚建; 储诚胜

doi:10.7538/yzk.2012.46.07.0867

²⁴⁰Pu丰度计算的γ能谱分析方法

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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- 刊出日期: 2012-07-19

Analysis Method of γ-ray Spectrum for Calculating Abundance of ²⁴⁰Pu

Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China

摘要

摘要: 构建了多重峰模型，在算法上采用改进非线性最小二乘拟合法，对多重峰峰面积进行拟合计算，回避了关联扣除带来的风险。实验表明：使用开发的γ属性分析例程分析的²⁴⁰Pu丰度不确定度较原来的分析算法降低1倍，在95%的置信概率下测量不确定度小于10%。
- 钚部件 ,
- 钚质量 ,
- ²⁴⁰Pu丰度
Abstract: A γ-ray spectrum analysis algorithms of multi-overlap-peak model and Levenberg-Marquardt (an improved nonlinear least squares fitting) for ²⁴⁰Pu abundance were developed to achieve accurate results. The peak area calculation can avoid the risks of associated subtraction by multi-peak fitting directly. The experiment results show that the improved method can give better results of ²⁴⁰Pu abundance, compared with the previous algorithm. The uncertainty of ²⁴⁰Pu abundance is less than 10% at 95% confidence level.
- weapons-grade plutonium ,
- plutonium mass ,
- ²⁴⁰Pu abundance

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参考文献(8)

[1]	赵武文. 应用模式识别方法的测量技术研究[J]. 核电子学与探测技术，2006，26（6）：1020-1024. ZHAO Wuwen. The research of template measurement technique based on pattern recognition[J]. Nuclear Electronics & Detection Technology, 2006, 26(6): 1020-1024（in Chinese）.
[2]	SAMPSON T E, KELLEY T A. PC/FRAM: A code for the nondestructive measurement of isotopic composition of actinides for safeguards application[J]. Appl Radiat Isot, 1997, 48(10-12): 1543-1568.
[3]	刘素萍，郝樊华，龚建，等. 钚部件属性γ射线综合测量原型系统[J]. 物理学报，2007，56（8）：4 406-4 412. LIU Suping, HAO Fanhua, GONG Jian, et al. A γ ray integrated prototype system for the measurement of plutonium component attributes[J]. Acta Phys Sin, 2007, 56（8）: 4406-4412(in Chinese).
[4]	SAMPSON T E, HSUE S T, PARKER J L, et al. The determination of plutonium isotopic composition by gamma ray spectroscopy[J]. Nucl Instrum Methods, 1982, 193: 177-183.
[5]	田东风，龚健，伍钧，等. 核材料γ特征谱的探测和分析技术[M]. 北京:国防工业出版社，2005：122-138.
[6]	古当长. 放射性核素活度测量的方法和技术[M]. 北京:科学出版社，1996.
[7]	傅祖芸，赵梅娜，丁岩石，等. C数值算法[M]. 北京：电子工业出版社，2003：517-519.
[8]	龚建,郝樊华，熊宗华. 相对效率法同位素丰度分析的研究[J]. 核电子学与探测技术,2001,21（4）：286-289. GONG Jian,HAO Fanhua,XIONG Zonghua. Analyzing isotopic abundance by method of relative efficiency[J]. Nuclear Electronics & Detection Technology, 2001, 21(4): 286-289(in Chinese).

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240Pu丰度计算的γ能谱分析方法

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Analysis Method of γ-ray Spectrum for Calculating Abundance of 240Pu

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目录

²⁴⁰Pu丰度计算的γ能谱分析方法

Analysis Method of γ-ray Spectrum for Calculating Abundance of ²⁴⁰Pu