闪光X射线高速摄影荧光转换屏的设计和性质研究  

A DESIGN AND THE PROPERTIES OF A PHOSPHOR TRANSFORM SCREEN FOR FLASH X-RAY HIGH SPEED PHOTOGRAPHY

作　　者：王富芝[1] 何喜庆[1] 曹瑰华 杨汉生 龚美霞[1] 王治平[1] 张儒端[1] 刘富霞[1] 

机构地区：[1]武汉大学环境科学系,武汉市医药公司,中国科学院西安光学精密机械研究所瞬态光学技术国家重点实验室

出　　处：《光子学报》1995年第3期268-272,共5页Acta Photonica Sinica

摘　　要：本文描述了用于中间弹道高速摄影荧光转换屏的设计特点、性能测试和实验结果。文中讨论了Ｇｄ２Ｏ２Ｓ：Ｔｂ和（Ｚｎ，Ｃｄ）Ｓ对Ｘ射线的吸收系数、发光效率以及荧光光谱与变象管Ｓ—２０阴极光谱灵敏度曲线相匹配的相关曲线；测试了转换屏的相对发光强度、分辨率及其余辉。实验证明本屏发光亮度比钨酸钙屏高６０倍左右，屏分辩率达５１ｐ／ｍｍ，余辉时间为８μｓ，多幅摄影结果证明第一幅的图象对第二幅照片无“拖尾”现象，本屏已达到了中间弹道高速摄影转换屏的实用水平。A design and a study of theproperties ofaphosphor transfOrm screen are reported,it isused for the high speed photography of middle ballistics,The absorption coefficient of X-ray,theluminous efficiency and the correlation of the fluorescence spectrum with the sensitivity of S 20 arestudied.And the relative luminosity,the spatial resolution and the afterglow are measured.It’sexperimentally shown that the luminosity of this screen is about 60 times higher than that of CaWO4screen. The spatial resolutin is 51p/mm and the afterglow is 8μs. From the multiframing photograph,itcan be seen that there isn’t tailing phenomena of the first image in the second image,this transformscreen is practical in the high speed photography of middle ballistics.

关 键 词：荧光转换屏 闪光X射线 高速摄影 设计 性质 

分 类 号：TB872[一般工业技术—摄影技术] O434.19[机械工程—光学工程]