摘要
光电转换效率是低能工业CT探测器的重要性能参数。分析了几种常用闪烁晶体的发光效率、几何尺寸、发光波长等参数对光电转换效率的影响,并通过实验测试比较了不同厚度(闪烁体沿X射线方向的尺寸)的CsI(TI)和CdWO4闪烁体探测器的光电转换效率。证明在低能工业CT中,CsI(TI)比CdWO4更适合用作X射线探测器闪烁体材料,且闪烁体的厚度对光电转换效率的影响很大。这对优化工业CT系统探测器闪烁体的选型与尺寸设计具有一定的参考价值。
Photoelectric conversion efficiency is a important capability parameter for Industry CT Detectors in Low energy.I have analyzed the effect of some common scintillating crystals＇ parameter such as efficiency,dimension and to Photoelectric conversion efficiency.And compared their Photoelectric conversion efficiency of CsI（TI） and CdWO4 scintillating crystal detectors through test experiments.It proved that in the Low X-ray energy Industry CT,CsI（TI） is more suitable than CdWO4 to be material for scintillating crystal detector,and its thickness greatly affect on the detector.It has certain referenced values to optimize the selection and designing dimension of Industry CT system detector Scintillating crystal.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2010年第10期1348-1351,共4页
Nuclear Electronics & Detection Technology
基金
重庆市科技攻关项目(CSTC2009AC3047)
关键词
光电转换效率
闪烁晶体
X射线探测器
Photoelectric conversion efficiency
scintillating crystal
X-ray detector
