Improvement of Sensitivity of the Lonizing Method For Radon Determination by lntegrated Current

采用积分电流电离法测氡结果表明；当氡气剂量很低时，在给定时间内将十分微弱的电流积分，大大地提高了测定的灵敏度，可测得剂量为1bQ以下的氧气，与常用的fd-125氡钍分析仪的比较实验数据相对误差不超过5%.The experimental results of Rn determination by the ionizing method with integrated ciruit are presented.The sensitivity of Rn determination could be greatly improved by integration of weakly ionizing current at very low concentrations of Rn and within the given experimental period.Experimental results indicated that sensitivity would be 1 Bq dose of Rn.Relative error was less than 5% in comparison with that of the FD-125 Rn analyzor

The Ionizing Measurement of Radon Escaped From the Underground Water

将氧气引入电离室，测定其微电流，可以直接测定地下水逸出气氡的浓度，实现自动记录。为地下水氧测定提供新的途径。该文着重介绍应用电离法测氧的各组实验及数据。When Radon is introduced into the ionizing cell,the micro-current can be mea-sured,so the Radon concentration can be measured directly and recorded automatically,This is a newmethod For measuring the Radon escaped From the underground water.In this paper,we present someexperiments and results of the Radon s measurement by the way of ionization