PROCESS DEVICE FOR TREATMENT OF HOLLOW COLD CATHODE IN GAS DISCHARGE Russian patent published in 2014 - IPC H01J9/02 

FIELD: electricity.

SUBSTANCE: process device for treatment of a hollow cold cathode in a gas discharge comprising a hollow cold cathode, an anode, located coaxially inside the cathode and equidistant from its surface, a glass vacuum-tight shell, in which the anode is made composite, the working part of the anode contacting with the gas discharge, is connected with its outer part, electrically contacting with the outer source of voltage or current, by means of a detachable joint, is made of the same material as the working surface of the cathode, treated with at least the same class of purity as the cathode, at the side of the inlet into the cathode is partially shielded by a dielectric located coaxially outside the anode. The non-shielded working part of the anode is located inside the cavity of the cathode and limited with maximum length not exceeding the length of the cathode. The treated cathode is fixed in the holder, which is electrically connected with a shunt to the cathode, besides, the shunt is in a vacuum tight manner mounted into a glass shell of the process device.

EFFECT: possibility to perform anode oxidation of a cathode in a medium of electrically negative gas, train and test a cathode autonomously from a vacuum post, multiply replace or use an anode and a glass vacuum-tight shell during installation of a new cathode.

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