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

doi:10.1080/00295450.2018.1474704

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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
	Li Sangang 2,3; Cheng Yi 3; Wang Lei 1,3; Yang Li 2,4; Liu Huan 3; Liao Jiawei 3; Zeng Liyang 3; Luo Yong 3; Wang Xiaoyu 2; Pei Qiuyan 2
刊名	NUCLEAR TECHNOLOGY
	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
DOI	10.1080/00295450.2018.1474704
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.
资助项目	Ministry of Science and Technology, China[2012YQ180118]
WOS关键词	CONTAMINATION ; CS-137
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000447370000007
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
内容类型	期刊论文
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.