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介绍了一种基于133B a标准源代替131I标准源刻度N aI(T l)闪烁体探测器对131I取样滤盒的γ总探测效率的原理和方法。并从实验结果上比较了用133B a标准源、131I标准源做的该总效率的刻度值,两者在6%的范围内一致。
A principle and method for total γ detection efficiency of 131I sampling cartridges based on 133B a standard source instead of 131I standard source calibrated N aI (T l) scintillation detector are presented. From the experimental results, the scale of the total efficiency was compared with that of 133B a standard source and 131I standard source, both of which were consistent within the range of 6%.