Comparison of Lu 3Al 5O 12:Ce and LaBr 3:Ce scintillators in gamma-ray spectrometry

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Publication Details

Author list: Chewpraditkul W., Wanarak C., Moszynski M., Swiderski L.

Publisher: Trans Tech Publications

Publication year: 2012

Volume number: 418-420

Start page: 922

End page: 927

Number of pages: 6

ISBN: 9783037853269

ISSN: 1022-6680

eISSN: 1662-8985

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857941090&doi=10.4028%2fwww.scientific.net%2fAMR.418-420.922&partnerID=40&md5=c97ac9059283f8bb7f66e76f0d45a4ab

Languages: English-Great Britain (EN-GB)

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Abstract

The performances of Ce-doped Lu 3Al 5O 12 (LuAG:Ce) and LaBr 3 (LaBr 3:Ce) scintillators were compared for γ-ray detection using photomultiplier tube ( XP5500B PMT) readout. For 662 keV γ-rays ( 137Cs source), an energy resolution of 3.5% obtained for LaBr 3:Ce is much better than that of 6.7% obtained for LuAG:Ce, while the estimated photofraction of 28.0% for LuAG:Ce is higher than that of 16.2% for LaBr 3:Ce. The light yield non-proportionality and energy resolution versus γ-ray energy were measured and the intrinsic resolution of the crystals was calculated. The coincidence timing resolution, obtained in this work for 511 keV annihilation quanta, was 583 ps and 204 ps, respectively, for LuAG:Ce -BaF 2 and LaBr 3:Ce - BaF 2 detectors. © (2012) Trans Tech Publications, Switzerland.

Keywords

LaBr 3:ce, Non-proportionality