Plasma properties of arc cathode spots at liquid-metal cathodes

Author

Batrakov, Alexander V.

Author_Institution

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

fYear

2002

fDate

2002

Firstpage

123

Lastpage

130

Abstract

The paper is devoted to results of long-lasting experimental studying of features of the spot burning at a liquid-metal cathode in vacuum. Various techniques were used, which are oscilloscopic registration, real-time observation with the use of high-speed IMACON 468 frame/streak camera, picosecond laser interferometry and absorption shadow imaging, time-of-flight mass spectrometry, and electron projector technique. Nonstationary processes at low-current (less than 100 A) vacuum arc discharge were the major goal of the study.

Keywords

cathodes; electron emission; light interferometry; liquid metals; plasma density; plasma temperature; streak cameras; time of flight mass spectroscopy; vacuum arcs; absorption shadow imaging; accelerated electrons flows; arc cathode spots; breakdown stage; electron plasma density; electron projector technique; electron temperature; explosive emission current; high-speed IMACON 468 frame/streak camera; ion charge state distribution; liquid-metal cathodes; low-current; low-current arc; near-threshold arc current; oscilloscopic registration; picosecond laser interferometry; plasma expansion velocity; plasma properties; time-of-flight mass spectrometry; vacuum arc discharge; Arc discharges; Cathodes; Current measurement; Gallium alloys; Plasma density; Plasma measurements; Plasma properties; Plasma temperature; Vacuum arcs; Vacuum breakdown;

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.2002.1027324

Filename

1027324