NRL-1型测氡仪的绝对湿度效应研究  

Study on Absolute Humidity Influence of NRL-1 Measuring Apparatus for Radon

作　　者：单健[1] 肖德涛[1] 赵桂芝[1] 周青芝[1] 刘彦[1] 丘寿康[1] 孟冶成[1] 熊信明[1] 刘小松[1] 马文荣[1] 

机构地区：[1]南华大学核科学技术学院,湖南衡阳421001

出　　处：《原子能科学技术》2014年第9期1707-1711,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(11375083;11075070);教育部博士点基金博导类课题资助项目(20114324110003)

摘　　要：本文根据目前国内外对绝对湿度效应的研究现状，针对绝对湿度对 N RL-1型测氡仪探测效率的影响，建立了N RL-1型测氡仪温湿度修正的实验方案。通过对南华大学氡实验室氡活度浓度的控制、温湿度调节方案进行分析与改进，控制实验中的绝对湿度变化，得到了不同绝对湿度下的修正因子，并获得了绝对湿度在1.90～14.91 g/m3范围内的温湿度修正曲线，从而成功地对N RL-1型测氡仪进行了温湿度效应修正。实验结果表明：综合考虑绝对湿度的情况下，在绝对湿度小于2.4 g/m3时，N RL-1型连续测氡仪的收集效率趋近于常数；其绝对湿度的修正因子基本接近于1；而随着绝对湿度的增大，修正因子呈非线性增长。The absolute humidity and temperature’s effects on the NRL-1 measuring apparatus for radon were studied in this paper .By controlling the radon activity concen-tration of the radon laboratory in University of South China and improving the tempera-ture and humidity adjust strategy , different correction factor values under different absolute humidities were obtained . Moreover , a correction curve between 1.90 and 14.91 g/m3 was also attained .The results show that in the case of absolute humidity , when it is less than 2.4 g/m3 ,collection efficiency of the NRL-1 measuring apparatus for radon tends to be constant ,and the correction factor of the absolute humidity closes to 1 . However , the correction factor increases nonlinearly along with the absolute humidity .

关 键 词：氡 测氡仪 绝对湿度效应 

分 类 号：TL816.2[核科学技术—核技术及应用]