The Direct Current associated with Microwave Gas Discharge between Coaxial Cylinders, I

Abstract

The author has found that when the microwave gas breakdown occurs, the direct current flows, without application of any direct voltage, in the external circuit from the outer conductor to the central wire of a cylindrical cavity containing gas.
An attempt has been made to explain this phenomenon by use of the diffusion theory of Herlin and Brown. The electron diffusion current density potential has been determined and thence the maximum electron density has been derived.