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Using a LaBr3:Ce scintillator for positron annihilation lifetime spectroscopy
Liu JH(刘军辉); Li DW(李道武); Zhang ZM(章志明); Liu, JH; Li, DW; Zhang, ZM; Wang, BY; Zhang, TB; Hao, J; Wei, L; Wang BY(王宝义); Zhang TB(张天保); Wei L(魏龙)
Source PublicationCHINESE PHYSICS C
AbstractA LaBr3:Ce scintillator has a high light output (similar to 60000 p.e/MeV) and a short decay constant (<25 ns), which makes it good for time spectrometry. Compared with a BaF2 scintillator, it can bear a much higher count rate, and can be coupled to photomultipliers without using a quartz window. In this work, a positron annihilation lifetime spectrometer (PALS) consisting of two bulks of phi 25 mmx 25 mm LaBr3:Ce scintillator coupled to two XP20D0 photomultipliers, respectively, was built. A time resolution of FWHM=206 ps was measured for the PALS with a Co-60 source at the energy window for Na-22. With this spectrometer, a reasonable lifetime value tau=221+/-4 ps in a pure Si sample is obtained, which means that the utilization of LaBr3:Ce as the detector for a PALS is feasible.
KeywordPALS LaBr3:Ce
Subject AreaPhysics
Indexed BySCI ; ADS
WOS IDWOS:000302928100017
ADS Bibcode2012ChPhC..36..380L
ADS URLhttps://ui.adsabs.harvard.edu/abs/2012ChPhC..36..380L
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2012ChPhC..36..380L/citations
Citation statistics
Cited Times:0 [ADS]
Document Type期刊论文
Recommended Citation
GB/T 7714
Liu JH,Li DW,Zhang ZM,et al. Using a LaBr3:Ce scintillator for positron annihilation lifetime spectroscopy[J]. CHINESE PHYSICS C,2012,36(4):380-383.
APA 刘军辉.,李道武.,章志明.,Liu, JH.,Li, DW.,...&魏龙.(2012).Using a LaBr3:Ce scintillator for positron annihilation lifetime spectroscopy.CHINESE PHYSICS C,36(4),380-383.
MLA 刘军辉,et al."Using a LaBr3:Ce scintillator for positron annihilation lifetime spectroscopy".CHINESE PHYSICS C 36.4(2012):380-383.
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