Properties of Ce:GAGG and CsI(Tl) Scintillation Crystals

Abstract

Abstract: The effect of different reflector packaging materials and different coupling modes with Si-PM on the light output and energy resolution of Ce:GAGG and CsI(Tl) scintillation crystals were studied. The transmittance and decay time of Ce:GAGG and CsI(Tl) scintillation crystals were compared. The experimental results show that the light collection efficiency of Ce:GAGG and CsI(Tl) scintillation crystals can be improved by optimizing the reflector material and coupling mode. The light output, energy resolution, transmittance and decay time of Ce:GAGG scintillation crystal are better than those of CsI(Tl) scintillation crystal. The test shows that the best energy resolution of ¹³⁷Cs radiation source is 4.89% at 662 keV for the Ce:GAGG crystal sample that encapsulated with TiO₂ reflector material and coupled with silicone grease.

Key words: Ce:GAGG, CsI(Tl), light output, energy resolution, transmittance, decay time, reflector

CLC Number:

TL812

WANG Qiang, DING Yuchong, QU Jingjing, ZHANG Zetao, WANG Lu, DONG Honglin, FANG Chengli. Properties of Ce:GAGG and CsI(Tl) Scintillation Crystals[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(10): 1940-1945.

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