静电收集法测量氡浓度的道设置方法  

Channel Set up for Measuring Radon Concentration by Static Collection Method

作　　者：周毅[1] 肖田[1] 游开明[1] 

机构地区：[1]衡阳师范学院物理与电子信息科学系,湖南衡阳421008

出　　处：《衡阳师范学院学报》2009年第6期50-52,共3页Journal of Hengyang Normal University

基　　金：衡阳师范学院2008年度大学生研究性学习和创新性实验计划项目

摘　　要：使用静电收集法测量氡浓度需要准确测量218Po产生的α粒子数量,这样就需要对218Po和214Po产生的α粒子的能量进行甄别。一般使用Ⅰ、Ⅱ高低两道来区别218Po2、14Po产生的α粒子,这需要考虑214Po产生的高能α粒子由于探测窗的能量损失而被计入218Po产生的低能α粒子,即两道的重叠因子。通过对氡子体α粒子的能谱进行分析,提出了静电收集法测氡浓度时高低两道设置的方法,得到准确的重叠因子。A α particle quantity procreated by ^218Po need nicety measure /or measuring radon concentration by static collection method. Thus, the quantities of αparticle procreated by ^218 Po and ^214 Po need to discriminate by energy. Generally, theuparticle procreated by ^218 Po and ^214 Po can be discriminated by Ⅰ（high energy） and Ⅱ（low energy） two channel. As a result of energy loss of detection window, high energyapartiele procreated by ^214po may be numbered in low energy αparticle procreated by ^218Po, thus, overlapping gene must be calculated. This paper propose the two channel set up method of high energy and low energy for measuring radon concentration by static collection method, obtain the exact overlapping gene by analyzing theuparticle spectrometer of radon progeny

关 键 词：静电收集法 氡浓度 道设置 

分 类 号：TL81[核科学技术—核技术及应用]