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
Figures & Tables(12)
Fig. 1. 241Am full energy peak measured by different detectors (color online)
Fig. 2. 137Cs full energy peak measured by different detectors (color online)
Fig. 3. 60Co full energy peak measured by different detectors (color online)
Fig. 4. 152Eu point sources measured by five detectors γ energy spectrum (color online)
Fig. 5. Measurement results of source peak detection efficiency for different detectors (color online)
Fig. 6. Background spectra measured by different detectors under environmental background conditions (color online)
Fig. 7. Background spectra measured by different detectors in a lead chamber (color online)
Table 1. Information of the detectors used in the experiment
View tableView in ArticleTable 1. Information of the detectors used in the experiment
探测器类型
Detector type
品牌
Brand
型号
Model
晶体尺寸 / mm
Crystal size
HPGe Canberra BE5030 ø81×31 CZT 迪泰克Imdetek DT-01C11005 10×10×5 LaBr3(Ce) SAINT-GOBAIN 02S102-B380 ø76×76 CeBr3 SCIONIX HOLLAND CEBR3(LB)-X2 ø76×76 NaI(Tl) ORTEC S-1212-1 ø76×76
Table 2. Standard source information used in the experiment
View tableView in ArticleTable 2. Standard source information used in the experiment
标准源
Standard source
主要γ射线能量和发射率 / keV
Main gamma ray energy and emissivity
活度 / Bq
Activity
活度不确定度 / %
Activity uncertainty (k=2）
241Am 59.54（35.9%） 9 000 2.5 137Cs 661.77（85.1%） 7 928 2.5 60Co 1 173.24（99.9%）、1 332.50（99.9%） 17 795 2.5 152Eu 121.78（39.8%）、244.70（10.6%）、344.28（95.2%）…… 27 905 3.0
Table 3. The FWHM of different detectors for different energy γ rays
View tableView in ArticleTable 3. The FWHM of different detectors for different energy γ rays
探测器类型
Detector type
FWHM / keV 241Am
（59.54 keV）
137Cs
（661.77 keV）
60Co
（1332.50 keV）
HPGe 0.72 1.23 1.65 CZT 4.40 9.73 14.36 LaBr3(Ce) 6.92 19.11 28.03 CeBr3 8.73 27.02 38.31 NaI(Tl) 9.57 47.53 66.87
Table 4. The minimum detection limits of five detectors for different nuclides under environmental background conditions
View tableView in ArticleTable 4. The minimum detection limits of five detectors for different nuclides under environmental background conditions
探测器类型
Detector type
探测限 / Bq Detection limits 241Am（59.54 keV） 137Cs（661.77 keV） 60Co（1 173.24 keV） 60Co（1 332.50 keV） HPGe 0.039 0.022 0.031 0.025 CZT 0.180 1.414 0.507 0.372 LaBr3(Ce) 0.781 0.464 0.402 0.335 CeBr3 0.697 0.371 0.404 0.040 NaI(Tl) 1.104 0.987 0.917 0.864
Table 5. The minimum detection limits of five detectors for different nuclides in a lead chamber
View tableView in ArticleTable 5. The minimum detection limits of five detectors for different nuclides in a lead chamber
探测器类型
Detector type
探测限 / Bq Detection limits 241Am（59.54 keV） 137Cs（661.77 keV） 60Co（1 173.24 keV） 60Co（1 332.50 keV） HPGe 0.005 0.005 0.007 0.007 CZT 0.020 0.294 0.162 0.149 LaBr3(Ce) 0.082 0.036 0.047 0.057 CeBr3 0.038 0.037 0.044 0.040 NaI(Tl) 0.063 0.057 0.076 0.072
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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
Paper Information
Category: RADIATION INTERDISCIPLINARY RESEARCH
Received: Jul. 11, 2024
Accepted: Aug. 8, 2024
Published Online: May. 16, 2025
The Author Email: Xianbao GU (顾先宝)
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