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1. 中国科学技术大学近代物理系
2. 中国科学技术大学近代物理系,合肥,230027
纸质出版日期:2005-05-01
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[1]刘春雷,刘杨,刘士涛,许咨宗,汪兆民.一种像增强屏特性的研究[J].核技术,2005(05):405-408.
LIU Chunlei LIU Yang LIU Shitao XU Zizong WANG Zhaomin. A phosphor screen for intensifying image[J]. Nuclear techniques, 2005, (5): 405-408.
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.
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