A theoretical model for the x-ray luminescence of granular phosphor screens
نویسندگان
چکیده
All theoretical calculations and predictions concerning the efficiency and resolution of fluorescent screens have been based until now on the Hamaker-Ludwig model,lV2 according to which a phosphor screen is assumed to be a homogeneous and uniform layer of phosphor material. As a result the model is suitable for the nongranular screens like the ones prepared by evaporation, but it is generally unsuitable for the granular screens like the ones prepared by sedimentation. In a previous paper3 we have studied the case of a low-thickness granular phosphor screen excited by an electron beam; in this paper we complete that study considering the case of granular screens excited by x rays.
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