Radiation detector using double amplification

Abstract

In a radiation detector two photocathodes are provided one on either side of a channel amplifier plate. One of these photocathodes is provided, so as to be electrically floating, on a layer of a dielectric on the opposite surface of which an electrode is provided, the lateral conductivity of this photocathode being low either owing to its subdivision into electrically isolated areas or owing to the choice of material. The potential distribution in the detector can be reversed from a write-in situation to a read-out situation so that the channel plate can be used twice and the amplification is subdivided, enabling it to be increased to a higher level.

Dependencies are inferred from the claim text.