Hollow Cathode-High Voltage Gas Isolator Combination
Original Publication Date: 1985-Aug-01
Included in the Prior Art Database: 2005-Feb-19
A device has been developed which combines two separate fragile components used in plasmas into a composite rugged form. These two components (a hollow cathode electron source and a high voltage gas isolator) are used for electron emission under a variety of circumstances, including ion sources and other plasma-related devices. The unit consists of a sturdy ceramic tube into which both a hollow cathode tube and a ceramic isolation section are inserted. This composite unit also functions as an insulating mount and a means of gas connection at one end. The disclosed structure solves the problems of mounting and electrical insulation of both devices in a simple compact form. The composite device is shown in the figure.