SD-3A型自动测氡仪在观测中值得注意的几个问题  

Some problems about Radon Detector of type SD-3A in measurement

作　　者：朱方保[1] 王雪莹[2] 张朝明[2] 陶月潮[2] 汪世仙[1] 

机构地区：[1]庐江地震台,中国安徽231511 [2]安徽省地震局,中国合肥230031

出　　处：《地震地磁观测与研究》2007年第1期96-102,共7页Seismological and Geomagnetic Observation and Research

基　　金：中国地震局三结合课题资助

摘　　要：论述了数字化气氡仪器SD-3A型自动测氡仪在观测中值得注意的几个问题,特别要注意①气氡观测数据在使用前要经过气温和气压的改正;②闪烁室进水、受到其他气体的污染、补充气体不及时等对观测结果影响是很明显的;③闪烁室在用空气和无水酒精清洗后测值的恢复有一个过程;④仪器标定前应用无水酒精对闪烁室进行清洗,才能提高标定的准确性。Several problems that should be paid attention to during the observation of Radon Detector with digital instrument of type SD-3A are discussed in the paper. They are （1） air temperature and air pressure corrections are necessary before the radon measurement data being used; （2） the measurement errors resulted from water getting into scintillant cell, contaminated by other gas and failing to replenish gas in time are obvious; （3） the process of measurement precision recovery after cleaning the scintillant cell with gas and anhydrous alcohol will last for awhile; （4） for improving the precision of instrument calibration, the scintillant cell should be cleaned with anhydrous alcohol before the calibration.

关 键 词：SD-3A型测氡仪 逸出气氡 观测 干扰问题 

分 类 号：P315.62[天文地球—地震学]