Primary Photocurrent in Cadmium Sulfide

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Abstract
Experiments were performed on the photocurrent caused by short flashes of light and by individual α particles in high-resistivity cadmium sulfide crystals. It was shown that the photocurrent pulses could be described by the mechanism of the so-called primary photocurrent of both electrons and "holes." The energy lost by an α particle per electron-hole pair created was found to be 7.2 ev, which seems somewhat high. Efforts to correlate the primary photocurrent with the so-called edge luminescence were not successful.