计量学报2016，Vol.37Issue(z1)：75-78,4.DOI:10.3969/j.issn.1000-1158.2016.z1.17
微弱电离电流测量方法的比较
Comparison of Three Kinds of Weak Current Measurement Methods in Ionizing Radiation
摘要
Abstract
In order to better use direct electrometer measurement,high gain negative feedback absolute measurement method and Thomson zero compensation method to measure in the experiment,the three methods were used to measure the ionization current of the ionization chamber in the monitoring source repeatedly.The measurement results show that the uncertainty of the measurement of the weak current is larger with direct electrometer measurement,the relative uncertainty of the measured values of the two later methods is smaller,so when measuring the current,the relative uncertainties are different.According to the actual situation,it should be to choose the appropriate method for measurement.关键词
计量学/微弱电流/静电计直接测量法/高增益负反馈法/汤森零位补偿法Key words
metrology/weak current/current/charge (I/Q) method/high gain negative feedback method/Thomson zero compensation method分类
通用工业技术引用本文复制引用
康佳佳,吴金杰,周振杰,任世伟,余继利,廖振宇..微弱电离电流测量方法的比较[J].计量学报,2016,37(z1):75-78,4.基金项目
国家自然科学基金项目(11205178) （11205178）
