Characterization of a β-γ coincidence system comprising a plastic scintillator and HPGe detector for radioxenon measurements under the CTBT

Characterization of a β-γ coincidence system comprising a plastic scintillator and HPGe detector for radioxenon measurements under the CTBT

Measurement of the four relevant radioxenon isotopes, namely 131mXe, 133mXe, 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 detec...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2023-08, Vol.1053, p.168358, Article 168358
Hauptverfasser: Li, Qi, Zhao, Yun-Gang, Fan, Yuan-Qing, Wang, Shi-Lian, Jia, Huai-Mao, Zhang, Xin-Jun, Zhang, Rui-Qin, Niu, Ya-Zhou, Li, Rui-Ying
Format: Artikel
Sprache:eng
Schlagworte:
[formula omitted]-[formula omitted] coincidence
CTBT
Minimum detectable activity
Radioxenon isotopes
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Zusammenfassung:Measurement of the four relevant radioxenon isotopes, namely 131mXe, 133mXe, 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 131mXe, 133mXe, 133Xe and 135Xe can achieve 1.8 mBq, 1.4 mBq, 3.4 mBq and 4.1 mBq, respectively.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2023.168358