Development of multi-color scintillator based X-ray image intensifier
Development of multi-color scintillator based X-ray image intensifier
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DOI：
10.1016/j.nima.2004.06.179
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发表时间：
2004-12-21
影响因子：
1.4
通讯作者：
Noji, T
中科院分区：
文献类型：
--
作者：
Nittoh, K;Konagai, C;Noji, T
研制了一种基于多色闪烁体的高灵敏度、宽动态范围、长寿命X射线像增强器。铕激活的Y2O2S闪烁体发射不同强度的红、绿色和蓝色光子，用作增强器的输出荧光屏。通过将该图像增强器与适当调谐的高灵敏度彩色CCD摄像机相结合，红色分量的灵敏度可能比常规图像增强器的灵敏度高六倍。适度的绿色和弱蓝色的同时发射覆盖不同的灵敏度区域。这将动态范围扩大了近两个十的数量级。使用这种图像增强器，可以同时对包含各种不同X射线透射率的复杂物体进行成像，从纸张，水或塑料到重金属。这种高灵敏度增强器在较低的X射线曝光下工作，导致闪烁体材料的降解较少，输出屏幕玻璃的着色较少，从而有助于实现更长的寿命。这种基于彩色闪烁体的图像增强器正被引入各种领域的X射线检查。(C)2004 Elsevier B.V.保留所有权利。
A multi-color scintillator based high-sensitive, wide dynamic range and long-life X-ray image intensifier has been developed. An europium activated Y2O2S scintillator, emitting red, green and blue photons of different intensities, is utilized as the output fluorescent screen of the intensifier. By combining this image intensifier with a suitably tuned high sensitive color CCD camera, it is possible for a sensitivity of the red color component to become six times higher than that of the conventional image intensifier. Simultaneous emission of a moderate green color and a weak blue color covers different sensitivity regions. This widens the dynamic range, by nearly two orders of ten. With this image intensifier, it is possible to image simultaneously complex objects containing various different X-ray transmission from paper, water or plastic to heavy metals. This high sensitivity intensifier, operated at lower X-ray exposure, causes less degradation of scintillator materials and less colorization of output screen glass, and thus helps achieve a longer lifetime. This color scintillator based image intensifier is being introduced for X-ray inspection in various fields. (C) 2004 Elsevier B.V. All rights reserved.