GUDDEN POHL EFFECT OF ZnCdS ; Ag, FLUORESCENT MATERIALS USED IN FLUOROSCOPY

Abstract

With the technical improvement of semi-conductors, the study of the luminescence of fluorescent materilas in an electric field has become important. Therefore, using ZnCdS ; Ag, fluorescent materials used in fluoroscopy, the authors studied the following aspects of the relation of G.P. effect (change in luminescence of fluorescent materials put in an electric field) : 1) The influence of frequency on the G.P. effect. 2) The relation between the phase of the electric field and that of X-ray as an incitement to luminescence. 3) The relation between G.P. effect and intensity of X-ray. 4) The relation between the quantity of fluorescence and the temperature in the field. From these studies, the following results were obtained : 1) The G.P. effect is proportional to the intensity of X-rays. 2) The quantity of fluorescence is in inverse proportion to the temperature.