| Ce∶GAGG与CsI(Tl)闪烁晶体性能对比研究 |
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| 引用本文： | 王强,丁雨憧,屈菁菁,张泽涛,王璐,董鸿林,方承丽.Ce∶GAGG与CsI(Tl)闪烁晶体性能对比研究[J].人工晶体学报,2021,50(10):1940-1945. |
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| 作者姓名： | 王强 丁雨憧 屈菁菁 张泽涛 王璐 董鸿林 方承丽 |
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| 作者单位： | 中国电子科技集团公司第二十六研究所,重庆 400060 |
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| 基金项目： | 重庆市技术创新与应用示范项目(cstc2019jscx-mbdx0037) |
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| 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TiO2反射层材料封装和硅脂耦合,测试得到137Cs放射源在662 keV最佳能量分辨率为4.89%。
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| 关 键 词： | Ce∶GAGG CsI(Tl) 光输出 能量分辨率 透过率 衰减时间 反射层 |
| 收稿时间： | 2021-08-31 |
Properties of Ce:GAGG and CsI(Tl) Scintillation Crystals |
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| 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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| Authors: | WANG Qiang DING Yuchong QU Jingjing ZHANG Zetao WANG Lu DONG Honglin FANG Chengli |
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| Affiliation: | The 26th Institute of China Electronics Technology Group Corporation, Chongqing 400060, China |
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| 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. |
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| Keywords: | Ce:GAGG CsI(Tl) light output energy resolution transmittance decay time reflector |
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