On a photoelectric theory of sparking potentials

Open Access

2 January 1928

journal article
Published by The Royal Society in Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character

Vol. 117 (777) , 508-516
https://doi.org/10.1098/rspa.1928.0013

Abstract

In recent papers (1) a new photoelectric theory of sparking potentials was put forward, in which it was assumed that no ionisation by collision of the positive ions against the gas molecules or atoms is produced, but that the additional ionisation required for the initiation of the self-sustained electric discharge is to be found in the photoelectric effect at the cathode surface of the radiation accompanying the neutralisation of the positive ions there. According to this theory, the sparking potential v _c is a function of the photoelectric emissivity of the cathode for those radiations accompanying the neutralisation of the positive ions at the cathode.

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