摘要
本标准装置包括有效体积为１．９４Ｌ和１．５４Ｌ的电离室、可编程静电计、高压电源以及可进行数据获取及处理的微机系统。采用标准液体镭源进行刻度，通过一系列实验对各种因素的影响作了测量。测得的电离室刻度系数分别为２４．６２、２３．９０Ｂｑ／ｐＡ，电离室电离电流测量不确定度（２σ）＜２％。
This system consists of internal gas ionization chambers(IC 1 #(volume 1 94 L), IC 2 #(volume 1 54 L)), the Keithley 617 programmable electrometer, a computer with an interface to control it and some programmes for data acquiring and processing in different conditions. The system is calibrated with a standard liquid 226 Ra source. The influence factors are tested through a series of experiments, and the uncertainties are also considered. The calibration factors are 24 62 Bq/pA(IC 1 #) and 23 90 Bq/pA(IC 2 #), respectively.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
1998年第4期317-322,共6页
Atomic Energy Science and Technology
基金
国防科工委资助项目
关键词
内充气
电离室
活度测量
氡
氡子体
标准装置
Calibration Internal gas ionization chamber Activity measurement Radon and its decay products Standard system
