井式HPGe探测器测量放射性氙活度方法研究

Activity measurement of radioxenon isotopes by well-type HPGe detector

介绍了用井式HPGe探测器测量氙同位素气体活度的方法。在研制了塑料管型γ源盒和样品转移制源平台的基础上,通过测试CTBT惰性气体氙传递实验比对样品对井式HPGe探测器进行了效率标定。对于133Xe 81 keVγ射线,测量24 h,系统的活度探测限达到了10.2 mBq。

This article introduces a new method to measurement the activity of radioxenon isotopes. The plastic tube-type gas cell and samples transfer apparatus were researched and manufactured. Peak efficiency of well-type HPGe detector was calibrated with the archive sample of CTBT noble gas exercise. The minimum detectable activity reaches 10.2 mBq to 81 keV gamma ray of ^133Xe in 24 h measurement time.