计量学报2013，Vol.34Issue(2)：180-183,4.DOI:10.3969/j.issn.1000-1158.2013.02.16
4πγ电离室活度标准装置测量系统的建立及性能测试
Establishment and Performance Testing of Measurement System for 4πγ Ionization Chamber Radioactivity Standard
柳加成 1吴永乐 1梁珺成 1袁之伦 1陈靖 1杨元第1
作者信息
摘要
Abstract
A measuring system based on Townsend induction balance method for 47πγ ionization chamber radioactivity standard is developed. The measuring system consists of high voltage source, voltage measurement, compensation circuit and control software. During Townsend balance process, the leakage currents and offset current are small in comparison with the current to be measured. The leakage and background current obtained with the measuring system is less than 3 x 10-14A. Measurements are performed to check the repeatability, stability, linearity and angle response of the system. The testing result shows that the measuring system meets the requirement of 4πγ ionization chamber radioactivity standard.关键词
计量学/4πγ电离室/活度/电离电流测量Key words
Metrology/ 4πγ ionization chamber/ Radioactivity/ Ionization current measurement分类
通用工业技术引用本文复制引用
柳加成,吴永乐,梁珺成,袁之伦,陈靖,杨元第..4πγ电离室活度标准装置测量系统的建立及性能测试[J].计量学报,2013,34(2):180-183,4.
