量子电子学报 ›› 2021, Vol. 38 ›› Issue (2): 259-264.

• “先进光学晶体”专辑 • 上一篇    

不同厚度Ce:GAGG闪烁晶体性能研究


王强, 丁雨憧∗, 屈菁菁, 王璐, 董鸿林, 方承丽, 毛世平   


  1. 中国电子科技集团公司第二十六研究所, 重庆400060
  • 收稿日期:2020-11-08 修回日期:2021-01-04 出版日期:2021-03-28 发布日期:2021-03-29
  • 通讯作者: E-mail: dingyuchong@163.com E-mail:wqcetc@163.com
  • 作者简介:王强( 1986 - ), 重庆人, 硕士, 工程师, 主要从事核辐射探测方面的研究。E-mail: wqcetc@163.com
  • 基金资助:
    Supported by ”13th Five Year Plan” Equipment Pre-research Project of China (“十三五”装备预研项目, 41424060303)

Performance of Ce: GAGG scintillation crystals with different thickness

WANG Qiang, DING Yuchong∗, QU Jingjing, WANG Lu, DONG Honglin, FANG Chengli, MAO Shiping   

  1. The 26th Institute of China Electronics Technology Group Corporation, Chongqing 400060, China
  • Received:2020-11-08 Revised:2021-01-04 Published:2021-03-28 Online:2021-03-29

摘要: 选择不同厚度的Ce:GAGG 闪烁晶体(2, 4, 6, 8, 10 mm), 通过透过率测试分析自吸收对Ce: GAGG 闪烁晶 体性能的影响, 同时研究晶体表面不同粗糙度、不同封装、不同耦合方式对Ce: GAGG 闪烁晶体光输出、能量分 辨率的影响。实验结果表明通过优化Ce: GAGG 闪烁晶体样品表面粗糙度、封装反射层和耦合方式, 能大幅度提 高Ce: GAGG 闪烁晶体样品的光输出和能量分辨率。使用137Cs 标准放射源, 测试得到Ce: GAGG 闪烁晶体样品 的最佳能量分辨率为7.0%。

关键词: 材料, Ce:GAGG 闪烁晶体, 透过率, 光输出, 能量分辨率

Abstract: Ce:GAGG scintillation crystals with different sizes and thicknesses (2, 4, 6, 8, 10 mm) are selected to analyze the influence of self absorption on Ce: GAGG scintillation crystals by measuring the transmittance. At the same time, the effects of different surface roughness, package and coupling mode on light output and energy resolution of Ce: GAGG scintillation crystals are investigated. The experimental results show that the optical output and energy resolution of Ce: GAGG scintillation crystal samples can be greatly improved by optimizing the surface roughness, encapsulation reflector and coupling mode. The best energy resolution of Ce: GAGG scintillation crystals is 7.0% by using 137Cs standard radioactive source.

Key words: material, Ce:GAGG scintillator crystals, transmission, light yield, energy resolution

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