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.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2008年第3期218-222,共5页
Atomic Energy Science and Technology
关键词
HPGE探测器
符合
反符合
HPGe detector
coincidence
anticoincidence
