~(241)Am中微量~(242)Cm测量技术研究
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- 英文论文题名：The measure technique study of dram ~(242)Cm in ~(241)Am material
- 论文作者：韩子杰 ; 鹿心鑫 ; 朱通华 ; 王玫
- 英文论文作者：HAN Zi-jie ; LU Xin-xin ; ZHU Tong-hua ; WANG Mei ; Institute of Nuclear Physics and Chemistry ; China Academy of Engineering
- 年：2015
- 作者机构：中国工程物理研究院核物理与化学研究所;
- 论文关键词：本底计数率 ; ~(241)Am峰计数率 ; 组合测量
- 英文论文关键词：count rate of background ; count rate of ~(241)Am peak ; combination measure
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第9册（核技术经济与管理现代化分卷、核电子学与核探测技术分卷、核测试与分析分卷）
- 语种：中文
- 分类号：TL814
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：6
- 文件大小：710k
- 原文格式：O
- 会议级别：全国
摘要
测量了PIPS半导体探测器的本底谱,得出~(242)Cmα粒子可测量的计数率下限为6.3×10~(-6)cps。用~(241)Amα源开展了实验测量工作,研究了不同~(241)Am能峰强度对~(242)Cmα粒子测量的影响,推算了~(241)Am能峰不同计数率情况下可测量的~(241)Am与~(242)Cm最大强度差。在一定的~(241)Am能峰计数率情况下,采用组合测量方法获取了~(242)Cmα谱,谱中~(241)Am与~(242)Cm强度差与理论推算结果基本一致。
The background signal spectra of measuring system with Passivated Implanted Planar Silicon(PIPS) Detector was experimental researched and then the lower limit of measuring count rate was deduced as 6.3×10~(-6) cps.With ~(241)Am alpha source,experiments was conducted to study the influence of peak strength of ~(241)Am alpha source on measurement of ~(242)Cm alpha source.Based on the experiments,the maximum strength gap of typical alpha peak of ~(241)Am and ~(242)Cm was estimated for the condition of different count rate of ~(241)Am peak.For the specific counting rate condition of~(241)Am alpha source,alpha spectra of ~(242)Cm was obtained using combination measuring method.The strength gap of typical alpha peak of ~(241)Am and ~(242)Cm well agreed the calculation.
The background signal spectra of measuring system with Passivated Implanted Planar Silicon(PIPS) Detector was experimental researched and then the lower limit of measuring count rate was deduced as 6.3×10~(-6) cps.With ~(241)Am alpha source,experiments was conducted to study the influence of peak strength of ~(241)Am alpha source on measurement of ~(242)Cm alpha source.Based on the experiments,the maximum strength gap of typical alpha peak of ~(241)Am and ~(242)Cm was estimated for the condition of different count rate of ~(241)Am peak.For the specific counting rate condition of~(241)Am alpha source,alpha spectra of ~(242)Cm was obtained using combination measuring method.The strength gap of typical alpha peak of ~(241)Am and ~(242)Cm well agreed the calculation.
引文
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[5]何贤文,姜山,何明,等.检测4.2 K低温金属环境下(210)Po-α衰变半衰期变化的实验方法[J].核技术,2011,34(7):503-506.
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[2]钱绍钧.核武器装备[M].北京:原子能出版社,2003.
[3]乔登江.地下核爆炸及其应用[M].北京:国防工业出版社,2002.
[4]杨波,应阳君,李金鸿,等.地下核爆的中子反照效应研究[J].原子能科学技术,2013,47(8):1281-1285.
[5]何贤文,姜山,何明,等.检测4.2 K低温金属环境下(210)Po-α衰变半衰期变化的实验方法[J].核技术,2011,34(7):503-506.
[6]朱传新,郑普.Al活化法测量反应截面技术研究[J].中国核科技报告,2009,(1):43-51.
[7]倪建忠,代义华,张海涛,等.α能谱法测定~(241)Am(n,γ)~(242)Am~(g,m)的反应分支比[,].原子能科学技术,2007,41(6):671-673.