Lu 1.8Y 0.2SiO 5:Ce and LaCl 3:Ce scintillators for gamma-ray detection
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Publication Details
Author list: Chewpraditkul W., Wanarak C., Moszynski M., Szczesniak T., Swiderski L.
Publisher: Trans Tech Publications
Publication year: 2011
Volume number: 284-286
Start page: 2064
End page: 2069
Number of pages: 6
ISBN: 9783037851913
ISSN: 1022-6680
eISSN: 1662-8985
Languages: English-Great Britain (EN-GB)
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Abstract
The scintillation properties of Lu 1.8Y 0.2SiO 5:Ce (LYSO:Ce) and LaCl 3:Ce scintillators were studied under γ-ray excitation. For 662 keV γ-rays ( 137Cs source), energy resolution of 4.5% obtained for LaCl 3:Ce coupled to XP5200B PMT is much better than that of 8.2% for LYSO:Ce. The estimated photofraction of 26.1% at 662 keV for LYSO:Ce is higher than that of 15.7% for LaCl 3:Ce. The non-proportionality of the light yield 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 222 and 229 ps, respectively, for LYSO:Ce - and LaCl 3:Ce - based detectors in coincidence with a BaF 2 detector. © (2011) Trans Tech Publications, Switzerland.
Keywords
Energy and timing resolution, Non-proportionality of light yield
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