Journal of Radiation Research and Radiation Processing, Volume. 43, Issue 2, 020701(2025)
Nuclear spectrometric performance measurement and comparative analysis of common gamma spectrum detectors
To understand the nuclear spectroscopic performance of gamma-ray spectrum detectors in different application scenarios, HPGe, CZT, LaBr3(Ce), CeBr3, and NaI(Tl), which are common gamma-ray spectrum detectors, were selected. 241Am, 137Cs, and 60Co standard sources were measured, and the detection limits of the different detectors for different nuclides were calculated. The results show that under environmental background conditions, the detection limits of the HPGe, CZT, LaBr3(Ce), CeBr3, and NaI(Tl) gamma spectrum detectors for low-energy gamma-ray 241Am are 0.039 Bq, 0.180 Bq, 0.781 Bq, 0.697 Bq, and 1.104 Bq, respectively. However, when measuring the activity of 137Cs in the lead chamber, the detection limits are 0.005 Bq, 0.294 Bq, 0.036 Bq, 0.037 Bq, and 0.057 Bq, respectively. The measurement and calculation results show the full-energy peak shape, source peak detection efficiency, background energy spectrum, and the detection limits of the different detectors in different application scenarios, thus providing reference nuclear spectroscopic performance parameters for selecting the appropriate gamma spectrum detectors to measure sample activity.
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Hai SUN, Xianbao GU, Guobing YU, Hao WANG, Deyun WEN, Wenliang ZHANG, Ben LIU. Nuclear spectrometric performance measurement and comparative analysis of common gamma spectrum detectors[J]. Journal of Radiation Research and Radiation Processing, 2025, 43(2): 020701
Category: RADIATION INTERDISCIPLINARY RESEARCH
Received: Jul. 11, 2024
Accepted: Aug. 8, 2024
Published Online: May. 16, 2025
The Author Email: GU Xianbao (顾先宝)