Measurement of absolute light yield and quantum efficiency of LaBr3:Ce scintillator detector using SiPM

This brief communication presents our work to determine the absolute light yield and quantum efficiency of LaBr3:Ce scintillator by comparison and also by direct pulse measurement method using SiPM. The first part presents use of the simpler comparison method to determine the light yields of differe...

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Bibliographic Details
Published in:Journal of instrumentation 2021-12, Vol.16 (12)
Main Authors: Sariyal, R., Mazumdar, I., Patel, S.M.
Format: Article
Language:English
Subjects:
Detectors
Efficiency
Excitation spectra
Fluorescence
Gamma detectors (scintillators, CZT, HPGe, HgI etc)
Light
Measurement methods
Photoemission
Photon detectors for UV, visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs, CMOS imagers, etc)
Quantum efficiency
Scintillation
Scintillation counters
Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)
Sensors
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Summary:This brief communication presents our work to determine the absolute light yield and quantum efficiency of LaBr3:Ce scintillator by comparison and also by direct pulse measurement method using SiPM. The first part presents use of the simpler comparison method to determine the light yields of different scintillators using the known yield of NaI(Tl) as reference. In the second part we have determined the absolute light yield and quantum efficiency of LaBr3:Ce crystal by using a SiPM photo detector. Our measured value is in good agreement with the light yield reported by previous measurements using PMT and excitation fluorescence spectroscopy. Quantum efficiencies for scintillation detectors have been determined by using both PMTs and photo detectors, namely APDs by previous authors. This communication is possibly the first report on the determination of quantum efficiency of LaBr3:Ce using SiPM photo detector. The simple and effective method presented here would allow to determine the light yield of any scintillation detector.
ISSN:1748-0221
DOI:10.1088/1748-0221/16/12/P12024