空心圆柱体131I取样滤盒γ探测效率刻度法

摘要

通过实验与计算,导出空心圆柱体截面的γ探测效率与炭层厚度的函数关系以及空心圆柱体取样滤盒131I炭层指数分布和均匀分布的γ探测效率,给出了空心圆柱体131I取样滤盒γ探测效率的刻度方法及误差。%In this paper, we deduced the function relationship betweern thegamma detecting efficiency of the hollow cylinder layer and the depth of active-carbon layer, and the gamma detecting effuciency of both the standard source and the actual ampling source, finally the method and the max. error of efficiency calibration to the hollow cylinder samper for 131I has been given.