Light emission of droplet spots at vacuum arc and after arc extinction

Light emission of droplet spots at vacuum arc and after arc extinction

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...

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Veröffentlicht in:IEEE transactions on plasma science 2005-10, Vol.33 (5), p.1476-1480
Hauptverfasser: Batrakov, A.V., Juttner, B., Proskurovsky, D.I., Pryadko, E.L.
Format: Artikel
Sprache:eng
Schlagworte:
Arc discharges
Cathodes
Dense plasmas
Digital cameras
Droplets
Emissions
Emittance
Extinction
Gallium alloys
High speed optical techniques
Light emission
Microscopy
Plasma
Plasma density
Plasma diagnostics
Plasma measurements
Plasma temperature
Spectral emissivity
Spots
Vacuum arcs
vacuum measurements
Vacuum technology
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Zusammenfassung: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.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2005.856516