Study on Temperature Dependence of Light Output of GAGG:Ce Scintillation Crystal

Abstract

Abstract: The light output performance of scintillation crystals can be affected by the temperature of the crystal. Gd₃(Ga, Al)₅O₁₂:Ce(GAGG:Ce) scintillation crystals are widely used in medical imaging, radiation monitoring, high-energy physics, and other fields. To study the temperature dependence of the light output of GAGG:Ce crystals, this paper designed an experiment with crystal temperature as a single variable. The full energy peak position of seven energy levels of γ-rays ranging from 121.8 keV to 1 112.1 keV was measured within the temperature range of -30 ℃ to 60 ℃. The curve of the light output of GAGG:Ce crystals changing with temperature was obtained, and the linear relationship between the light output of the crystal and temperature was analyzed. A linear function was used to fit the energy linearity of the corresponding channel positions for seven energies ranging from 121.8 keV to 1 112.1 keV at different temperatures. The determination coefficient R² of the linear fit was greater than 0.999 9, demonstrating that GAGG:Ce crystals have good energy linearity.

Key words: scintillation crystal, GAGG:Ce, temperature response, light output, energy linearity

CLC Number:

O734

WAN Qianyin, WANG Qiang, LIU Shuangquan, HUANG Xianchao, XIAO Xiong, SONG Baolin, JIANG Yunrui, TAO Zucai, DING Yuchong. Study on Temperature Dependence of Light Output of GAGG:Ce Scintillation Crystal[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(12): 2073-2078.

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