Increasing the ion charge states in vacuum arc plasmas by arc current spikes

Author

Yushkov, George Yu. ; Oks, Efim M. ; Anders, André ; Brown, Ian G.

Author_Institution

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

Volume

1

fYear

2000

fDate

2000

Firstpage

264

Abstract

The ion charge state distribution of vacuum arc plasma depends on its arc operating (“burning”) voltage. Increase of the arc operating voltage leads to dissipation of more energy in the collisional cathode-spot plasma and as a result the average ion charge state increases. One way of increasing the arc voltage is to superimpose current spikes on the arc current. The influence of single, double, and multiple current spikes on the charge state distribution has been investigated for various cathode materials

Keywords

cathodes; electric charge; ions; magnetic fields; plasma; vacuum arcs; arc burning voltage; arc current spikes; arc operating voltage; cathode materials; collisional cathode-spot plasma; current spkies superposition; double current spikes; ion charge state distribution; ion charge states improvement; multiple current spikes; single current spikes; vacuum arc plasmas; Cathodes; Ion sources; Magnetic fields; Plasma density; Plasma materials processing; Plasma sources; Pulse circuits; Radio control; Vacuum arcs; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 2000. Proceedings. ISDEIV. XIXth International Symposium on

Conference_Location

Xi´an

Print_ISBN

0-7803-5791-4

Type

conf

DOI

10.1109/DEIV.2000.877301

Filename

877301