Activity Measurement of Xenon Isotope by Anti-cosmic Ray γ Spectrometer

LI Qi; WANG Shi-lian; FAN Yuan-qing; ZHAO Yun-gang; JIA Huai-mao; ZHANG Xin-jun; WANG Jun; YU Wei-xiang

doi:10.7538/yzk.2017.51.02.0330

Atomic Energy Science and Technology > 2017 > 51(2): 330-337. > DOI: 10.7538/yzk.2017.51.02.0330

LI Qi, WANG Shi-lian, FAN Yuan-qing, ZHAO Yun-gang, JIA Huai-mao, ZHANG Xin-jun, WANG Jun, YU Wei-xiang. Activity Measurement of Xenon Isotope by Anti-cosmic Ray γ Spectrometer[J]. Atomic Energy Science and Technology, 2017, 51(2): 330-337. DOI: 10.7538/yzk.2017.51.02.0330

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Activity Measurement of Xenon Isotope by Anti-cosmic Ray γ Spectrometer

1.
Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, China
2.
CTBT Beijing National Data Centre and Radionuclide Laboratory, Beijing 100085, China

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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 20-2400 keV. Within 3 days measurement by anti-cosmic HPGe γ spectrometer, the minimum detectable activities of ¹³¹Xe^m,¹³³Xe^m,¹³³Xe and ¹³⁵Xe are 3.2, 4.3, 2.8 and 6.1 mBq respectively, which satisfies the requirements of CTBT.
- anti-cosmic ray γ spectrometer,
- xenon isotope,
- minimum detectable activity

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