KCl校准溶液中^(40)K活度浓度的定值方法  

Methods to Determine the Radioactivity of KCl Solution for the Calibration of Underwater Gamma Ray Detector

作　　者：李强[1] 陈立[1] 方登富[1] 冯梅[1] 韦应靖[1] 

机构地区：[1]中国辐射防护研究院,太原030006

出　　处：《核电子学与探测技术》2016年第6期647-650,共4页Nuclear Electronics & Detection Technology

摘　　要：水下就地γ谱仪的探测效率校准,要用到大体积液体^(40)K放射源。该放射源是通过在大体积水箱中配置KCl溶液制作而成。溶液活度浓度的准确定值是进行探测效率校准的基础。使用HPGe探测器进行取样能谱测量实验,并给出了KCl校准溶液活度浓度定值的质量丰度法、实验效率外推法、实验和MC模拟相结合法、半经验公式法等实用方法。The efficiency of the underwater radioactivity monitor needs to be calibrated. KCl powder was diluted into large volume water tank. The accurate efficiency calibration of the detector depends on correct determina- tion of the solution radioactivity. This paper measured some spectra with hyper pure germanium detector. This study describes some methods, including mass abundance methods, extrapolation of measured detection effi- ciency, the combination of monte carlo method and experiment, semi - experimental formula method, to solve the problem.

关 键 词：辐射环境监测 KCl溶液 探测效率校准 活度浓度 HPGE探测器 

分 类 号：O582[理学—物理]