Propagation of ion plasma flow of cathodic arc disharge in hollow cathode (study and the first results)

• Main Authors: Bazhenov, V.Yu., Dobrovol’skii, A.M., Goncharov, O.A., Khomich, V.O., Naiko, I.V., Piun, V.M., Protsenko, I.M., Tsiolko, V.V.
• Format: Article
• Language: English
• Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2016
• Series: Вопросы атомной науки и техники
• Subjects: Iter and fusion reactor aspects
• Online Access: http://dspace.nbuv.gov.ua/handle/123456789/115446

It is shown that the ion plasma flow originated from cathodic spots of vacuum arc discharge, at its propagation through cylindrical electrode with proper voltage bias, initiates hollow cathode discharge, which is self-sustained and continues its glow after the ion plasma flow blow out. At that, the hollow cathode discharge plasma features (electron density and temperature) are mainly determined by work gas pressure and supplied electrical power. Achieved discharge power and duration could be sufficient for efficient evaporation of microdroplets in the ion plasma flow from vacuum arc discharge without significant loss of ion fraction of the flow.