4πβ-γ(HPGe)参数法测量放射性活度  

4πβ-γ(HPGe) Method for Activity Measurement

作　　者：姚顺和[1] 汪建清[1] 杨丽艳[1] 姚艳玲[1] 杨巧玲[1] 贾雪文[1] 

机构地区：[1]中国原子能科学研究院放射性计量测试部,北京102413

出　　处：《原子能科学技术》2008年第3期218-222,共5页Atomic Energy Science and Technology

摘　　要：用HPGe探测器替代传统4πβ-γ符合装置中的NaI(Tl)探测器,对γ射线进行精细测量。选取一组适当的γ射线进行符合或反符合测量,计算出较为准确的β效率,从而简单地得到待测核素的放射性活度。133Ba和131I活度的实验测量结果表明,4πβ-γ(HPGe)参数法是1种准确、可靠的放射性活度测量方法。The 4πβ-γ（HPGe） method for activity measurement was described. The HPGe detector is taken to replace the NaI（Tl） detector in the usual 4πβ-γ system, which can detect γ-ray more accurately. With proper selection of γ-ray, the approach can simply determine activity. With the measurements of 133^Ba and 131^I, it is concluded that the 44πβ-γ（HPGe） anticoincidence method is an accurate and credible method for activity measurement.

关 键 词：HPGE探测器 符合 反符合 

分 类 号：TL84[核科学技术—核技术及应用]