摘要
研究了不同反射层封装方式和与Si-PM不同耦合方式对Ce∶GAGG和CsI(Tl)闪烁晶体光输出和能量分辨率的影响,比较了Ce∶GAGG和CsI(Tl)闪烁晶体的透过率和衰减时间。实验结果表明:通过优化闪烁晶体的反射层材料和耦合方式,能大幅度提高Ce∶GAGG和CsI(Tl)闪烁晶体的光收集效率;Ce∶GAGG闪烁晶体的光输出、能量分辨率、透过率、衰减时间指标均优于CsI(Tl)闪烁晶体。Ce∶GAGG闪烁晶体使用TiO_(2)反射层材料封装和硅脂耦合,测试得到^(137)Cs放射源在662 keV最佳能量分辨率为4.89%。
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 ^(137)Cs radiation source is 4.89%at 662 keV for the Ce∶GAGG crystal sample that encapsulated with TiO_(2) reflector material and coupled with silicone grease.
作者
王强
丁雨憧
屈菁菁
张泽涛
王璐
董鸿林
方承丽
WANG Qiang;DING Yuchong;QU Jingjing;ZHANG Zetao;WANG Lu;DONG Honglin;FANG Chengli(The 26th Institute of China Electronics Technology Group Corporation, Chongqing 400060, China)
出处
《人工晶体学报》
CAS
北大核心
2021年第10期1940-1945,共6页
Journal of Synthetic Crystals
基金
重庆市技术创新与应用示范项目(cstc2019jscx-mbdx0037)。
