Dense plasma cluster formation around drop in vacuum discharge cathode plasma

Author

Popov, S.A.

Author_Institution

Inst. of High Current Electron., Acad. of Sci., Tomsk, Russia

fYear

2002

fDate

2002

Firstpage

384

Lastpage

387

Abstract

The subject of investigation described in the paper is a set of droplets flying away from the cathode and their own dense plasma surrounding them. Plasma parameters of the formed clusters were measured. It has been suggested that the mechanism of plasma cluster formation consists in intensive heating, evaporation, and ionization of the droplet material. Herewith, the key factor increasing the heating flow from surrounding plasma to droplet is electron emission originating from the droplet surface.

Keywords

cathodes; drops; evaporation; ionisation; light interferometry; plasma diagnostics; plasma production; vacuum arcs; dense plasma cluster formation; droplet surface; droplets; electron emission; evaporation; heating flow; intensive heating; ionization; long-distance QUESTAR QM-100 microscope; plasma parameters measurement; resonance laser diagnostics; subnanosecond laser interferometry; ultrahigh-speed IMACON-468 camera; vacuum discharge cathode plasma; vapor density measurements; Cathodes; Fault location; Heating; Plasma density; Plasma materials processing; Plasma measurements; Plasma sources; Production; Surface discharges; Vacuum arcs;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 2002. 20th International Symposium on

Print_ISBN

0-7803-7394-4

Type

conf

DOI

10.1109/ISDEIV.2002.1027389

Filename

1027389