摘要
报道了一种用于像增强的闪烁屏(Gd2O2S:Tb)特性的实验研究结果:其光产额约为9×104/MeV;用单光子时间分辨谱仪测得荧光衰减时间为833μs;发射荧光有几个窄的谱带,其中545nm的谱带占优势。实验测得该闪烁屏吸收白光形成的余辉具有分钟级的衰减时间。
The paper reports the experimental result of a kind of phosphor screen (Gd2O2S:Tb) which can be used to reinforce image. The phosphor screen has photon yield about 9×104 / MeV, and decay time of fluorescence measured by a single-photon-time resolution spectrometer is 833μs. The emission spectrum is obtained, which consists of a 545 nm main band surrounded by several weaker narrow bands. The experiment also shows that the phosphor screen has an afterglow component with a decay time of about one minute after natural light exposure.
出处
《核技术》
CAS
CSCD
北大核心
2005年第5期405-408,共4页
Nuclear Techniques
基金
国家自然科学基金(10275063)资助
关键词
荧光衰减时间
光产额
余辉
发射光谱
Fluorescence decay time, Photon yield, Ailerglow, Emission spectrum
