掺铈钆镓铝石榴石闪烁晶体辐照效应研究  

Effect of Irradiation on Ce:GAGG Scintillation Crystals

作　　者：韩恒利 王强 万前银[1,2] 屈菁菁 安康 陈研[3] 肖雄[1,2] 任科静 丁雨憧 HAN Hengli;WANG Qiang;WAN Qianyin;QU Jingjing;AN Kang;CHEN Yan;XIAO Xiong;REN Kejing;DING Yuchong(The 26th Institute of China Electronics Technology Group Corporation,Chongqing 400060,China;CETC Chip Technology(Group)Co.,Ltd.,Chongqing 401332,China;ICT-NOT Engineering Research Center of Ministry of Education,Chongqing University,Chongqing 400044,China;College of Aerospace Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]中国电子科技集团公司第二十六研究所,重庆400060 [2]中电科芯片技术(集团)有限公司,重庆401332 [3]重庆大学工业CT无损检测教育部工程研究中心,重庆400044 [4]重庆大学航空航天学院,重庆400044

出　　处：《压电与声光》2025年第1期104-107,共4页Piezoelectrics & Acoustooptics

基　　金：国家重点研发计划资助项目(2022YFF0706400)。

摘　　要：使用^(60)Co放射源对掺铈钆镓铝石榴石(Ce:GAGG)闪烁晶体样品进行辐照,剂量率为3×10^(5)Rad/h,辐照总剂量分别为10^(6)Rad、10^(7)Rad和10^(8)Rad。通过测试辐照前后Ce:GAGG闪烁晶体样品的透过率、相对光输出、能量分辨率及衰减时间来研究辐照效应。实验结果表明,经过10^(8)Rad辐照,晶体的透过率在450~900 nm波段无明显变化,在320 nm处降幅最大(为8.9%);晶体的光输出降低了1.47%,能量分辨率略有下降;晶体的相对光输出、能量分辨率及衰减时间等性能未发生明显改变。验证了该晶体具有良好的抗γ辐照能力,在高剂量核辐射探测领域中具有广阔的应用前景。Ce:GAGG scintillation crystal samples were irradiated using a^(60)Co radiation source at a dose rate of 3×10^(5)Rad/h,and the total irradiation doses delivered to the samples were 10^(6),10^(7),and 10^(8)Rad.The effects of irradiation were investigated by measuring the transmittance,relative light output,energy resolution,and decay time of the Ce:GAGG scintillation crystal samples before and after irradiation.The experimental results showed that after irradiation at a dose of 10^(8)Rad,the transmittance of the crystal remained unchanged in the 450-900 nm,and the lowest transmittance(8.9%)was detected at 320 nm.The light output of the crystal decreased by 1.47%,whereas the energy resolution deteriorated only slightly.The relative light output,energy resolution,and decay time of the crystal did not change significantly.These results confirm the high resistance of the crystal toγ-ray irradiation and demonstrate its broad application prospects in high-dose nuclear radiation detection.

关 键 词：透过率 相对光输出 能量分辨率 衰减时间 辐照损伤 

分 类 号：TN256[电子电信—物理电子学] TN36