一种基于微通道板的脉冲X射线时间谱仪  

A Pulsed X-Ray Facility for Fluorescent Lifetime Measurement Based on Microchannel Plate Photomultiplier Tube

作　　者：顾牡[1] 王迪[1] 倪晨[1] 刘小林[1] 黄世明[1] 刘波[1] 

机构地区：[1]同济大学波耳固体物理研究所、波与材料微结构实验室,上海200092

出　　处：《光学学报》2008年第4期813-816,共4页Acta Optica Sinica

基　　金：国家自然科学基金(50672068,10476018);上海市科委研究项目(05JC14062,05ZR14123)资助课题

摘　　要：为适应新型超快闪烁材料研究的需要,在原有脉冲X射线时间谱仪的基础上,通过改装微通道板光电倍增管(MCP-PMT),并采用具有快时间响应的前置放大器(FPA)和恒比甄别器(CFD)的方法,使谱仪的时间分辨极限提高到170ps左右。BaF2晶体闪烁光快成分衰减时间谱的测量结果表明:该谱仪可很好地满足新型超快闪烁材料发光衰减时间特性的研究。To meet the needs of research on new fast scintillation materials, the home-made pulsed X-ray facility for fluorescents lifetime measurement was upgraded by using microchannel plate photomultiplier tube （MCP-PMT）, fast preamplifier （FPA） and fast constant-fraction discriminator （CFD）. The time resolution of the facility is improved to about 170ps. The decay time measurement of the fast scintillation component in BaF2 crystal shows that the facility can be well adequate to the research on decay times of fast scintillation materials.

关 键 词：脉冲X射线 时间分辨 微通道板光电倍增管 衰减时间谱 

分 类 号：O434[机械工程—光学工程]