Rapid determination of radon monitor＇s calibration factors  

作　　者：Zhi-Qiang Li De-Tao Xiao Gui-Zhi Zhao Xi-Jun Wu Jian Shan Qing-Zhi Zhou Zheng-Zhong He 

机构地区：[1]University of South China, Hengyang 421001, China [2]Hengyang Normal University, Hengyang 421008, China

出　　处：《Nuclear Science and Techniques》2016年第5期188-192,共5页核技术（英文）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 11475082, 11375083, and 11275096)

摘　　要：The monitors used to measure radon concentration must be calibrated,and the calibration factor of each measurement cycle should be determined.Thus,the determination time of calibration factors of NRL-Ⅱ radon monitors should be reduced.In this study,a method is proposed to determine the calibration factors of radon monitors rapidly.In the proposed method,the calibration factor is initially determined in the 60-min measurement cycle;the calibration factor is then identified in the other measurement cycle on the basis of the principle that the calibration factor of the same radon monitor in different measurement cycles is inversely proportional to the number of a particles produced by ^(218)Po decay in this cycle.Results demonstrate that the calculated calibration factor of the different measurement cycles is consistent with the experimental calibration factor.Therefore,this method is reliable and can be used to determine the calibration factor of radon monitors rapidly.The monitors used to measure radon concentration must be calibrated, and the calibration factor of each measurement cycle should be determined. Thus, the determination time of calibration factors of NRL-II radon monitors should be reduced. In this study, a method is proposed to determine the calibration factors of radon monitors rapidly. In the proposed method, the calibration factor is initially determined in the 60-min measurement cycle; the calibration factor is then identified in the other measurement cycle on the basis of the principle that the calibration factor of the same radon monitor in different measurement cycles is inversely proportional to the number of a particles produced by 218Po decay in this cycle. Results demonstrate that the calculated calibration factor of the different measurement cycles is consistent with the experimental calibration factor. Therefore, this method is reliable and can be used to determine the calibration factor of radon monitors rapidly.

关 键 词：校准因子 氡浓度 监测仪 快速测定 测量周期 监测器 测定时间 校正因子 

分 类 号：R122[医药卫生—环境卫生学]