GAGG:Ce闪烁晶体光输出的温度特性研究

人工晶体学报 ›› 2024, Vol. 53 ›› Issue (12): 2073-2078.

GAGG:Ce闪烁晶体光输出的温度特性研究

万前银^1,2, 王强^1,2, 刘双全³, 黄先超³, 肖雄^1,2, 宋宝林^1,2, 蒋赟睿^1,2, 陶祖才^1,2, 丁雨憧^1,2

1.中电科芯片技术(集团)有限公司,重庆 401332;
2.中国电子科技集团公司第二十六研究所,重庆 401332;
3.中国科学院高能物理研究所,北京市射线成像技术与装备工程技术研究中心,北京 100049

收稿日期:2024-07-09 出版日期:2024-12-15 发布日期:2024-12-20
作者简介:万前银(1994—),男,四川省人,助理工程师。E-mail:1255722503@qq.com
基金资助:
国家重点研发计划(2022YFF0707900)

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

WAN Qianyin^1,2, WANG Qiang^1,2, LIU Shuangquan³, HUANG Xianchao³, XIAO Xiong^1,2, SONG Baolin^1,2, JIANG Yunrui^1,2, TAO Zucai^1,2, DING Yuchong^1,2

1. CETC Chip Technology (Group) Co., Ltd, Chongqing 401332, China;
2. 26th Research Institute of China Electronics Technology Group Corporation, Chongqing 401332, China;
3. Beijing Engineering Research Center of Radiographic Techniques and Equipment, Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, China

Received:2024-07-09 Online:2024-12-15 Published:2024-12-20

摘要/Abstract

摘要： 闪烁晶体的光输出性能会受到晶体温度的影响。掺铈钆镓铝石榴石(Gd₃(Ga,Al)₅O₁₂:Ce,GAGG:Ce)闪烁晶体在医学成像、辐射监测、高能物理等领域应用广泛。为研究GAGG:Ce晶体光输出的温度特性,本文设计了晶体温度为单一变量的实验,测量了GAGG:Ce晶体在-30~60 ℃、121.8~1 112.1 keV的7个能量γ射线的全能峰峰位随温度的变化,得到了GAGG:Ce晶体光输出随温度的变化曲线,并分析了晶体光输出与温度的线性关系;采用一次函数拟合了不同温度下121.8~1 112.1 keV的7个能量与γ谱线相应道址的能量线性,其线性拟合的决定系数R²大于0.999 9,证明了GAGG:Ce晶体具备良好的能量线性。

关键词: 闪烁晶体, GAGG:Ce, 温度响应, 光输出, 能量线性

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

中图分类号:

O734

万前银, 王强, 刘双全, 黄先超, 肖雄, 宋宝林, 蒋赟睿, 陶祖才, 丁雨憧. GAGG:Ce闪烁晶体光输出的温度特性研究[J]. 人工晶体学报, 2024, 53(12): 2073-2078.

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.

参考文献

[1] 冯大建, 丁雨憧, 刘军, 等. Ce:GAGG闪烁晶体生长与性能研究[J]. 压电与声光, 2016, 38(3): 430-432.
FENG D J, DING Y C, LIU J, et al. Study on the growth and scintillation properties of Ce:GAGG crystal[J]. Piezoelectrics & Acoustooptics, 2016, 38(3): 430-432 (in Chinese).
[2] 王海丽, 李辉, 周南浩, 等. Gd₃(Al, Ga)₅O₁₂:Ce晶体生长与闪烁性能研究[J]. 人工晶体学报, 2023, 52(12): 2156-2160.
WANG H L, LI H, ZHOU N H, et al. Growth and scintillation properties of Gd₃(Al, Ga)₅O₁₂:Ce crystal[J]. Journal of Synthetic Crystals, 2023, 52(12): 2156-2160 (in Chinese).
[3] KIM H L, KIM H J, JANG E J, et al. Scintillation properties of the Gd₃Al₂Ga₃O₁₂:Ce crystal [J]. Journal of Ceramic Processing Research, 2015, 16(1): 124-128.
[4] DELLA CASA G, ZAMPA N, CIRRINCIONE D, et al. New detailed characterization of the residual luminescence emitted by the GAGG:Ce scintillator crystals for the HERMES pathfinder mission[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2024, 1058: 168825.
[5] WANG R, ZHANG D B, HU Y F, et al. High-sensitivity cardiac SPECT system design with collimator-less interspaced mosaic-patterned scintillators[J]. Frontiers in Medicine, 2023, 10: 1145351.
[6] 李冲, 杨帅, 刘玥雯, 等. 雪崩光电探测器的击穿效应模型分析[J]. 半导体光电, 2023, 44(4): 493-497.
LI C, YANG S, LIU Y W, et al. Model analysis of breakdown effects in avalanche photodetectors[J]. Semiconductor Optoelectronics, 2023, 44(4): 493-497 (in Chinese).
[7] 李延鹏. NaI(Tl)谱仪温漂校正技术的研究[D]. 成都: 成都理工大学, 2019.
LI Y P. Study on temperature drift correction technology of NaI(Tl) spectrometer[D].Chengdu: Chengdu University of Technology, 2019 (in Chinese).
[8] IANAKIEV K D, ALEXANDROV B S, LITTLEWOOD P B, et al. Temperature behavior of NaI(Tl) scintillation detectors[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2009, 607(2): 432-438.
[9] 邓晓钦, 胡天宇, 曾国强, 等. 适用于深孔测井的LuAG闪烁体探测器的温度特性[J]. 核技术, 2017, 40(11): 33-38.
DENG X Q, HU T Y, ZENG G Q, et al. Temperature characteristic of LuAG scintillation detector for deep-well logging[J]. Nuclear Techniques, 2017, 40(11): 33-38 (in Chinese).
[10] 雷文明, 李京伦, 艾宪芸, 等. SiPM-GAGG(Ce)探测器γ能谱稳谱方法研究[J]. 原子能科学技术, 2023, 57(7): 1425-1434.
LEI W M, LI J L, AI X Y, et al. Study on gamma spectrum stabilization method for SiPM-GAGG(Ce) detector[J]. Atomic Energy Science and Technology, 2023, 57(7): 1425-1434 (in Chinese).
[11] 孙超, 郭乃宇, 叶力, 等. 优化的RBF神经网络对光纤位移传感器温度补偿[J]. 压电与声光, 2022, 44(1): 85-88.
SUN C, GUO N Y, YE L, et al. Study on temperature compensation of optical fiber displacement sensor based on optimized RBF neural network[J]. Piezoelectrics & Acoustooptics, 2022, 44(1): 85-88 (in Chinese).
[12] NAKAJIMA K, TAMAGAWA Y, OGAWA I, et al. Temperature dependence of scintillation properties and pulse shape discrimination between γ- and α-rays in Gd₃Al₂Ga₃O₁₂:Ce scintillator[J]. Nuclear Instruments and Methods in Physics Research Section A:Accelerators, Spectrometers, Detectors and Associated Equipment, 2019, 916: 51.
[13] SEITZ B, CAMPOS RIVERA N, STEWART A G. Energy resolution and temperature dependence of Ce:GAGG coupled to 3 mm×3 mm silicon photomultipliers[J]. IEEE Transactions on Nuclear Science, 2016, 63(2): 503-508.
[14] YONEYAMA M, KATAOKA J, ARIMOTO M, et al. Evaluation of GAGG:Ce scintillators for future space applications[J]. Journal of Instrumentation, 2018, 13(2): P02023.
[15] KORJIK M, ALENKOV V, BORISEVICH A, et al. Significant improvement of GAGG:Ce based scintillation detector performance with temperature decrease[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2017, 871: 42-46.
[16] 李东. 基于SiPM的γ能谱仪关键影响因素修正研究[D]. 抚州: 东华理工大学, 2023.
LI D. Study on correction of key influencing factors of γ-ray spectrometer based on SiPM[D].Fuzhou: East China Institute of Technology, 2023 (in Chinese).
[17] 王兆民. 暗物质粒子探测卫星塑闪阵列探测器温度效应研究[D]. 北京: 中国科学院大学, 2016.
WANG Z M. Study on temperature effect of plastic scintillation array detector of dark matter particle detection satellite[D]. Beijing: University of Chinese Academy of Sciences, 2016 (in Chinese).
[18] SYSOEVA E, TARASOV V, ZELENSKAYA O. Comparison of the methods for determination of scintillation light yield[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2002, 486(1/2): 67-73.
[19] 程翀, 王益元, 许浒, 等. GAGG:Ce探测器与NaI:Tl探测器性能比较[J]. 核电子学与探测技术, 2017, 37(1): 16-19.
CHENG C, WANG Y Y, XU H, et al. Comparative Study of GAGG:Ce and NaI:Tl detector[J]. Nuclear Electronic & Detection Technology, 2017, 37(1): 16-19 (in Chinese).