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Development of a Plasma Gun System for Ion Plating with Long Lifetime  

Choi, Young-Wook (한국전기연구원)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.57, no.1, 2008 , pp. 78-81 More about this Journal
Abstract
A hollow cathode which has extremely stable discharge characteristic has been developed. This is composed of the two separated lanthanum hexaboride(LaB6) of a disk type in the tube as the electron emitters. The way of design is of great advantage to extend the surface discharge area of the LaB6, which is also useful for optimal fixing of the LaB6. The hollow cathode is capable of producing 30 kW(100 V, 300 A) of power continuously. Because the generated plasma beam with the high temperature(above $3000^{\circ}C$) from the hollow cathode passes through the center hole of the two intermediate electrodes, it is designed with the high temperature material of the tungsten and the suitable structure of the water cooling. The combinations of the hollow cathode and the two intermediate electrodes are practically useful for the ion plating plasma beam source.
Keywords
Ion Plating; Hollow Cathode; Plasma Gun; $LaB_6$;
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