基于ERS2S测氡仪的氡析出率准确测量研究  

Accurate Measurement of Radon Exhalation Rate based on ERS2S Instrument

作　　者：张叶[1,2] 张雄杰[3] 杨亚新[1] 郑勇明[1] 

机构地区：[1]东华理工大学放射性地质与勘探技术国防重点学科实验室,南昌330013 [2]南京航空航天大学材料科学与技术学院,南京211100 [3]核技术应用教育部工程研究中心(东华理工大学),南昌330013

出　　处：《核电子学与探测技术》2015年第2期150-153,共4页Nuclear Electronics & Detection Technology

基　　金：江西省青年科学基金项目(20132BAB213023);江西省教育厅科学技术研究项目(赣教技字[12754]号);放射性地质与勘探技术国防重点学科实验室开放基金项目(REGT1209)

摘　　要：氡析出率的测定是废石堆、尾矿堆监测治理中的重要指标,德国ERS2S氡钍射气析出率测量仪提供了线性拟合和指数拟合两种数据处理方式,在实际工作中往往出现难以确定选择使用何种数据处理方式能得到较为准确的氡析出率。针对该问题本文从线性拟合和指数拟合两种计算方法的理论模型入手,分析两种拟合方法的适用范围。研究表明线性拟合适合短时间测量,随着测量时间的增加,线性拟合计算的氡析出率误差将会不断增大。指数拟合需要测量数据较多,短时间测量时容易产生较大误差,长时间测量拟合度较好。研究成果有利于使用ERS2S测氡仪准确测量氡析出率,同时也为氡析出率的新测量方法的研究提供了理论、实践基础。Radon exhalation rate is an important indicator in waste dump and tailing heap monitoring governance, and Germany Electrostatic Radon/Thoron Sampler ERS2S provides linear fitting and exponential fitting data processing methods to calculate radon exhalation rate.However, in the actual work, it tends to be difficult to determine which kind of data processing methods can get more accurate radon exhalation rate.Therefore, in this paper, the applicable scope of the two fitting methods was analyzed from the theoretical model of two kinds of calculation methods.The results have shown that linear fitting is suitable for a short measuring time.With the increase of measuring time, linear fitting calculation error of radon exhalation rate will be increased.Exponential fitting needs more data, it is easy to generate large measurement error with short time, and the fit of the measurements for a long time is better.This research is helpful to use ERS2S instrument to accurately measure radon exhalation rate, as well as provides a theoretical and practical basis of a new method for measuring radon exhalation rate.

关 键 词：氡析出率 ERS2S测氡仪 线性拟合 指数拟合 

分 类 号：TL84[核科学技术—核技术及应用]