1947•Journal of Scientific InstrumentsOpen access

Some Photoelectric Thresholds for Geiger-M ller Counters with Evaporated Cathodes

C A Ramm

Abstract

In order to determine the influence on the photoelectric thresholds of Geiger-Müller counters prepared in a manner similar to that described by De Vos and Du Toit, measurements with several cathode metals have been made. It was found that gold had desirable properties for counters with evaporated cathodes.

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Key concepts: Geiger counter, Photoelectric effect, Cathode, Materials science, Physics, Optics, Chemistry, Physical chemistry