一种同时测量^(222)Rn、^(220)Rn的单闪烁室两段法  

Simultaneous Measurement of Radon and Thoron Using a Scintillation Cell

作　　者：周青芝[1] 肖德涛[1] 赵桂芝[1] 肖拥军[1] 单健[1] 

机构地区：[1]南华大学核科学技术学院,湖南衡阳421001

出　　处：《南华大学学报（自然科学版）》2013年第4期19-22,共4页Journal of University of South China：Science and Technology

基　　金：国家青年基金资助项目(11005060);教育部博士点基金资助项目(20114324110003)

摘　　要：本文介绍了一种同时测量混合222Rn、220Rn空气的单闪烁室方法,该方法利用一个闪烁室测量采样结束后两个不同时间段的计数,再联立一个二元方程组来求解222Rn、220Rn浓度,因此也叫单闪烁室两段法,该方法无需任何延时即可快速准确测定混合环境下222Rn、220Rn浓度.A method has been developed for the simultaneous measurement of radon （222Rn） and thoron（220Rn） in a mixed environment using a scintillation cell in this paper. The method uses counts from two arbitrary counting intervals from zero time with respect to sampling, establishes two equations with two unknown variables to solve concentrations of radon and thoron, hence, called two-count method （TCM）. The method can be used to esti- mate the radon and thoron concentrations in a mixed environment accurately and quickly, as there is no need to delay the counting to achieve complete decay of thoron.

关 键 词：^222RN ^220RN 闪烁室 两段法 

分 类 号：TL751[核科学技术—辐射防护及环境保护]