级联衰变核素活度测量方法的比较和探讨

Comparison and Discussion of Measurement Methods for β-γ Nuclides Activity

摘要: 符合法和计数相加法是级联衰变核素活度的两种测量方法。文章分析了两种方法的原理、联系和区别。在此基础上，提出了相加法和直接计数相加法，并指出，相加法和符合法在数学上是等价的，直接计数相加法和计数相加法是等价的。

Abstract: The coincidence method and count-summing method were normally applied to determine the activity for β-γ nuclides. The principles，relation and difference of two methods were discussed in the paper. The summing method and the direct count-summing method were also brought forward.