中子活化分析中煤样厚度及探测器位置的选择  

Selection of Coal Thickness and Detector Position in Neutron Activation Analysis

作　　者：王二永[1] 马玉刚[1] 龚亚林 张伟 李建[1] 马赛[1] 马纯辉 陆景彬[1] 

机构地区：[1]吉林大学物理学院,长春130012 [2]丹东东方测控技术股份有限公司,辽宁丹东118002

出　　处：《吉林大学学报（理学版）》2015年第5期1031-1033,共3页Journal of Jilin University:Science Edition

基　　金：国家重大科学仪器设备开发专项基金(批准号:2012YQ240121)

摘　　要：利用MCNP5程序包模拟14MeV脉冲中子照射一定厚度煤样,并通过时间控制获得非弹γ能谱和俘获γ能谱,再利用计数率的高低确定γ能谱的获取位置.结果表明:当煤样厚度为20cm时,非弹γ能谱的计数率达到饱和;当煤样厚度为35cm时,俘获γ能谱的计数率达到饱和.Fourteen MeV pulsed neutron irradiated coal sample of certain thickness was simulated with the aid of MCNP5 package.Inelastic and captureγspectra were acquired by controlling the tally time.Collection location ofγspectra is determined by count rates.Trends of inelastic and captureγspectra of coal samples with different thickness were observed.

关 键 词：中子感生瞬发γ射线分析方法 俘获 煤样厚度 Γ能谱 

分 类 号：O571.33[理学—粒子物理与原子核物理]