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Measurement of the intrinsic radiopurity of (CS)-C-137/U-235/U-238/Th-232 in CsI(Tl) crystal scintillators
TEXONO Collaboration
2006
发表期刊NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
卷号557期号:2页码:490-500
通讯作者Wong, HT (reprint author), Acad Sinica, Inst Phys, Taipei, Taiwan.
摘要The inorganic crystal scintillator CsI(TI) has been used for low energy neutrino and Dark Matter experiments, where the intrinsic radiopurity is an issue of major importance. Low-background data were taken with a Csl(TI) crystal array at the Kuo-Sheng Reactor Neutrino Laboratory. The pulse shape discrimination capabilities of the crystal, as well as the temporal and spatial correlations of the events, provide powerful means of measuring the intrinsic radiopurity of Cs-137 as well as the U-215, U-238 and Th-232 series. The event selection algorithms are described, with which the decay half-lives of (218)po, (214)po, Rn-220, Po-216 and Po-212 were derived. The measurements of the contamination levels, their concentration gradients with the crystal growth axis, and the uniformity among different crystal samples, are reported. The radiopurity in the U-231 and Th-212 series are comparable to those of the best reported in other crystal scintillators. Significant improvements in measurement sensitivities were achieved, similar to those from dedicated massive liquid scintillator detector. This analysis also provides in situ measurements of the detector performance parameters, such as spatial resolution, quenching factors, and data acquisition dead time. (c) 2005 Elsevier B.V. All rights reserved.
关键词PULSE-SHAPE DISCRIMINATION DARK-MATTER DETECTION NEUTRINO EXPERIMENTS BETA-DECAY GRAN SASSO DETECTOR SEARCH PERFORMANCES IDENTIFICATION SPECTROSCOPY
学科领域Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy
DOI10.1016/j.nima.2005.11.192
收录类别SCI
语种英语
WOS类目Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Particles & Fields ; Spectroscopy
WOS记录号WOS:000235498300011
引用统计
被引频次:21[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212647
专题实验物理中心
作者单位中国科学院高能物理研究所
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TEXONO Collaboration. Measurement of the intrinsic radiopurity of (CS)-C-137/U-235/U-238/Th-232 in CsI(Tl) crystal scintillators[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2006,557(2):490-500.
APA TEXONO Collaboration.(2006).Measurement of the intrinsic radiopurity of (CS)-C-137/U-235/U-238/Th-232 in CsI(Tl) crystal scintillators.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,557(2),490-500.
MLA TEXONO Collaboration."Measurement of the intrinsic radiopurity of (CS)-C-137/U-235/U-238/Th-232 in CsI(Tl) crystal scintillators".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 557.2(2006):490-500.
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