Characterization of a β-γ coincidence system comprising a plastic scintillator and HPGe detector for radioxenon measurements under the CTBT,Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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Characterization of a β-γ coincidence system comprising a plastic scintillator and HPGe detector for radioxenon measurements under the CTBT
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment ( IF 1.5 ) Pub Date : 2023-05-12 , DOI: 10.1016/j.nima.2023.168358
Qi Li , Yun-Gang Zhao , Yuan-Qing Fan , Shi-Lian Wang , Huai-Mao Jia , Xin-Jun Zhang , Rui-Qin Zhang , Ya-Zhou Niu , Rui-Ying Li

Measurement of the four relevant radioxenon isotopes, namely $^{131m}$ Xe, $^{133m}$ Xe, ¹³³Xe, and ¹³⁵Xe, play a key role in underground nuclear explosion monitoring for ensuring compliance with the Comprehensive Nuclear-Test-Ban Treaty (CTBT). A $β - γ$ coincidence system that employs a plastic scintillator detector and a HPGe detector was developed in Beijing Radionuclide Laboratory. The Minimum Detectable Activity (MDA) in a 24-h measurement of the system for $^{131m}$ Xe, $^{133m}$ Xe, ¹³³Xe and ¹³⁵Xe can achieve 1.8 mBq, 1.4 mBq, 3.4 mBq and 4.1 mBq, respectively.

更新日期：2023-05-12

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