Title :
Light emission of droplet spots at vacuum arc and after arc extinction
Author :
Batrakov, Alexander V. ; Jüttner, Burkhard ; Proskurovsky, Dmitry I. ; Pryadko, Elena L.
Author_Institution :
High Current Electron. Inst., Russian Acad. of Sci., Tomsk, Russia
Abstract :
Some droplets emitted by vacuum arc cathode spot and surrounded by dense plasma are referred to as droplet spots. The goal of this work is the study of spectral characteristics of the droplet spot light emission. The spectrum of droplets was compared with the spectrum of the cathode spot. The light emission of droplet spots after arc extinction was also studied. Non-monotonous (twinkling) glow of droplet spots was found to last for a long time (up to 1 ms) after arc extinction.
Keywords :
afterglows; drops; plasma diagnostics; vacuum arcs; arc extinction; dense plasma; droplet spot light emission; spectral characteristics; twinkling glow; vacuum arc cathode spot; Arc discharges; Cathodes; Digital cameras; Gallium alloys; High speed optical techniques; Microscopy; Plasma density; Plasma measurements; Plasma temperature; Vacuum arcs; Plasma diagnostics; vacuum arcs; vacuum measurements;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2005.856516
