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The Effect of Intrinsic Radiation from a 3 x 3-in. LaBr3(Ce) Scintillation Detector on In Situ Artificial Radiation Measurements

文献类型：期刊论文

作者Li Sangang2,3; Cheng Yi3; Wang Lei1,3; Yang Li2,4; Liu Huan3; Liao Jiawei3; Zeng Liyang3; Luo Yong3; Wang Xiaoyu2; Pei Qiuyan2
刊名NUCLEAR TECHNOLOGY
出版日期2018
卷号204期号:2页码:195-202
关键词Intrinsic radiation LaBr3(Ce) detector in situ radiation measurement minimum detectable activity
ISSN号0029-5450
DOI10.1080/00295450.2018.1474704
通讯作者Cheng Yi(chengyi@cdut.cn)
英文摘要In situ radiation measurements are commonly used to detect radioactive material in luggage; at border control checkpoints; for in-field monitoring; during the illicit transfer of nuclear material; and at radioactive contamination sites, e.g., the Fukushima nuclear accident site. In considering the high brightness, fast decay time, and good energy resolution of cerium-doped lanthanum bromide [LaBr3(Ce)] scintillation detectors, this work conducted an experimental analysis aimed at evaluating the potential for applying LaBr3(Ce) detectors to in situ artificial radiation measurements. The effect of the intrinsic radiation of the LaBr3(Ce) detector was investigated. In addition, the intrinsic radiation contribution to the background radiation of the region of interest (ROI) under full-energy peaks for several artificial point sources and the minimum detectable activity (MDA) values of a 3 x 3-in. LaBr3(Ce) detector for several artificial radioactive point sources under unshielded (in the natural background) and well-shielded (in a low background chamber) conditions were calculated. The results indicate that the intrinsic radiation has a significant effect on the background radiation of the ROI especially when the full-energy peaks of several artificial point sources are located in the low-energy region or near 789 and 1400 keV. In addition, the MDAs (the measured time is 300 s) of the LaBr3(Ce) detector for Eu-152 (121.78 keV), Ba-133 (356 keV), Cs-137 (661.7 keV), and Co-60 (1332.5 keV) were 218.2, 63.6, 61.3, and 59.6 Bq, respectively, under unshielded conditions and 111.4, 39.1, 46.1, and 38.6 Bq, respectively, under well-shielded conditions. The intrinsic radiation also has some effects on the MDA of the LaBr3(Ce) detector, especially in the low-energy region. Thus, the drawback of its intrinsic radiation limits its application to in situ weak artificial radiation measurements, but LaBr3(Ce) detectors have the potential for use in medium-and high-radiation measurements due to the better energy resolution of these detectors than NaI(Tl) detectors.
WOS关键词CONTAMINATION ; CS-137
资助项目Ministry of Science and Technology, China[2012YQ180118]
WOS研究方向Nuclear Science & Technology
语种英语
WOS记录号WOS:000447370000007
出版者TAYLOR & FRANCIS INC
资助机构Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China ; Ministry of Science and Technology, China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/39507]  
专题合肥物质科学研究院_中科院等离子体物理研究所
通讯作者Cheng Yi
作者单位1.State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
2.Univ Sci & Technol China, Hefei 230027, Anhui, Peoples R China
3.Chengdu Univ Technol, Chengdu 610059, Sichuan, Peoples R China
4.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Li Sangang,Cheng Yi,Wang Lei,et al. The Effect of Intrinsic Radiation from a 3 x 3-in. LaBr3(Ce) Scintillation Detector on In Situ Artificial Radiation Measurements[J]. NUCLEAR TECHNOLOGY,2018,204(2):195-202.
APA Li Sangang.,Cheng Yi.,Wang Lei.,Yang Li.,Liu Huan.,...&Wang Jie.(2018).The Effect of Intrinsic Radiation from a 3 x 3-in. LaBr3(Ce) Scintillation Detector on In Situ Artificial Radiation Measurements.NUCLEAR TECHNOLOGY,204(2),195-202.
MLA Li Sangang,et al."The Effect of Intrinsic Radiation from a 3 x 3-in. LaBr3(Ce) Scintillation Detector on In Situ Artificial Radiation Measurements".NUCLEAR TECHNOLOGY 204.2(2018):195-202.

入库方式： OAI收割

来源：合肥物质科学研究院

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