Light Yield Non-Proportionality and Energy Resolution of Lu_1.8Y_0.2SiO₅:Ce and LaCl₃:Ce Scintillation Crystals

Abstract:

The scintillation response of Lu_1.8Y_0.2SiO₅:Ce (LYSO:Ce) and LaCl₃:Ce scintillators were compared under g-ray excitation using photomultiplier tube (PMT) readout. For 662 keV g-rays (¹³⁷Cs source), energy resolution of 4.5±0.2% obtained for LaCl₃:Ce coupled to XP5200B PMT is much better than that of 8.2±0.4% for LYSO:Ce. The non-proportionality of the light yield and energy resolution versus g-ray energy were measured and the intrinsic resolution of the crystals was calculated. Special attention was devoted to the correlation between intrinsic resolution and non-proportional response of scintillators.

• Periodical: Advanced Materials Research (Volumes 284-286)
• Pages: 2002-2007
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.284-286.2002
• Online since: July 2011
• Authors: Chalerm Wanarak, WEERAPONG CHEWPRADITKUL, Akapong Phunpueok
• Keywords: Energy Resolution, Intrinsic Resolution, LaCl₃:Ce, LYSO:Ce, Non-Proportionality of the Light Yield, Scintillator

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