New Developments in Radiation Detectors and Electron Multipliers

This paper describes several electron devices for the detection of radiation. Discussed are a photomultiplier for UV and X-ray spectrum analysis which uses a switchable segmented photocathode; a large area scintillation counter tube which uses a large size multiplier structure giving it high coupling factor and high current capability; and a small, two terminal electron multiplier structure which uses an inclined strip of semiconductor material in an electric field. Illustrations and some performance data are given.