CR-39测量中子能谱响应函数的计算  

The response function calculation for neutron energy spectrum measurement by CR-39 detector

作　　者：李义国[1] 史永谦[1] 夏普[1] 罗璋琳[1] 

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《核技术》2002年第7期517-519,共3页Nuclear Techniques

基　　金：国家重点基础研究 973课题 (G1 9990 2 2 6)资助

摘　　要：在一定的化学和电化学蚀刻条件下 ,计算了由聚乙烯、铅 (金 )和CR - 39组成的叠层探测器的响应函数 (1— 2 0MeV)。计算结果表明 ,叠层探测器的响应函数分布近似为高斯分布 ,由铅组成的探测器的响应函数的半高宽比由金组成的探测器的响应函数的半高宽窄 。The response function of stack detector consisted of polyethylene, lead (gold) and CR-39 was obtained under the fixed chemical and electrochemical treatment condition. The calculated results show that the response function FWHM of stack detector consisted of lead is smaller than that of stack detector consisted of gold. The former resolution is better than the later. The response and response function peak value of the stack detector are changed with the increment of lead (gold) thickness and neutron energy, and the response function peak value for fixed thickness of polyethylene decreases with the increment of lead (gold) thickness. For fixed thickness of lead (gold), the response function peak value increases with the increment of polyethylene thickness and neutron energy, but the resolution of stack detector becomes poorer.

关 键 词：响应函数 叠层探测器 中子能谱 

分 类 号：TL374.5[核科学技术—核技术及应用]