原子能科学技术2017，Vol.51Issue(2)：330-337,8.DOI:10.7538/yzk.2017.51.02.0330
反宇宙射线γ谱仪系统测量氙同位素活度
Activity Measurement of Xenon Isotope by Anti-cosmic Ray γ Spectrometer
摘要
Abstract
Radioxenon isotopes are important monitoring components of comprehensive nuclear-test-ban treaty (CTBT).An anti-cosmic ray γ spectrometer was set up for measuring low-level active xenon isotope sample in CTBT verification regime.Compared with the original γ spectrum,the suppression factor of integrated background is about 6 times in the energy range of 20-2 400 keV.Within 3 days measurement by anti-cosmic HPGe γ spectrometer,the minimum detectable activities of 131Xem,133Xem,133Xe and 135Xe are 3.2,4.3,2.8 and 6.1 mBq respectively,which satisfies the requirements of CTBT.关键词
反宇宙射线γ谱仪系统/氙同位素/最小可探测活度Key words
anti-cosmic ray γ spectrometer/xenon isotope/minimum detectable activity分类
能源科技引用本文复制引用
李奇,王世联,樊元庆,赵允刚,贾怀茂,张新军,王军,于伟翔..反宇宙射线γ谱仪系统测量氙同位素活度[J].原子能科学技术,2017,51(2):330-337,8.基金项目
国家自然科学基金青年基金资助项目(11505082) （11505082）
