Spectral matching consideration in the design of a novel x-ray image intensifier

In this article, a novel x-ray image intensifier is introduced. It is mainly composed of an x-ray intensifying screen and a low-light-level (L-3) image intensifier. In order to obtain a bright enough image, the spectral compatibility among three different combinations of the x-ray intensifying screen and the photocathode is analyzed. The comparison indicates that a (Zn,Cd)S:Ag screen is superior to either a CaWO4 screen or a Gd2O2S:Tb screen when combined with the Super S-25 photocathode and spectral compatibility analysis is a useful guide when designing an optoelectronic imaging device. (c) 2006 American Institute of Physics.