【摘要】 采用流通式氡气源模拟实际流程 ,对数字化测氡的各个环节以及仪器标定方法进行了实验研究 .发现计数率随气体流量的升高而降低 ,并用氡气在闪烁室中的通过时间予以解释 .指出对测氡仪器必须进行标定 ,而且必须用流通式氡气源来标定 ;在观测中应控制或测定进入闪烁室的气体流量 .最后对闪烁室的放射性污染进行了理论分析更多还原

【Abstract】 The real process of digital measure of radon is simulated by flow through radon gas source.The experimental study on the instrument standardization and each procedure of digital measure of radon is made. It was found that count rate reduces while gas flowing rate increases.This fact can be explained by the lasting time of gas in the scintillation chamber.Some conclusions are drawn:instrument of the digital measure of radon must be standardized and only standardized by flow through radon gas source;gas flux of entering the scintillation chamber should be controlled or measured in the process of digital measure of radon.In addition,the radio contamination in scintillation chamber is analyzed.更多还原