基于单光子技术的闪烁体衰减时间常数测量  

Measurement of Scintillator Decay Time Constant Based on Single Photon Technology

作　　者：王强 王璐[1] 屈菁菁 丁雨憧[1] WANG Qiang;WANG Lu;QU Jingjing;DING Yuchong(The 26th Institute of China Electronics Technology Group Corporation,Chongqing 400060,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

出　　处：《压电与声光》2020年第2期200-202,共3页Piezoelectrics & Acoustooptics

基　　金：2016年工信部工业强基工程基金资助项目(TC160A310-17);军用电子元器件支撑科研基金资助项目(1607WM0005)。

摘　　要：采用单光子技术中的延迟符合法原理,搭建了一套闪烁体衰减时间常数测量系统。选取国产的Ce∶LYSO和Ce∶LuAG两种闪烁体各3条进行衰减时间测量,将测试得到的衰减时间常数曲线进行单指数拟合,计算可得,Ce∶LYSO和Ce∶LuAG发光衰减时间常数平均值分别为43.85 ns及56.02 ns。结果表明,该套装置的测试结果与国内外同行其他测量方法得到的结果基本一致。A set of measurement system of scintillator decay time constant is built up based on the principle of delayed coincidence method of single photon technology.Three pieces scintillation crystals of Ce:LYSO and Ce∶LuAG scintillators were selected to measure the decay time.The single exponential fitting of the decay time constant curve obtained from the measurement is carried out.The calculated decay time constant average of Ce∶LYSO is 43.85 ns;the decay time constant average of Ce∶LuAG is 56.02 ns.The test results of the device are basically consistent with those of other measurement methods at home and abroad.

关 键 词：单光子 衰减时间常数 闪烁体 Ce∶LYSO Ce∶LuAG 

分 类 号：TM930.8[电气工程—电力电子与电力传动] TL812.1[核科学技术—核技术及应用]