High current density spotless vacuum arc as a glow discharge

Author

Puchkarev, V.F. ; Boehkarev, M.B.

Author_Institution

Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA

Volume

1

fYear

1996

fDate

21-26 Jul 1996

Firstpage

155

Abstract

Vacuum discharge burning between a broad cathode and a point anode made of Mo, Cu and Cd has been studied. This discharge operates in anode vapors and shows major arc characteristics, though no craters were examined on the cathode. The secondary electron emission is involved to explain current transport within the cathode region. This discharge is interpreted as a high density low voltage glow discharge. Having discussed the present and previous findings, the conclusion has been drawn that the secondary electron emission and “hump of potential” are dominant in the vacuum arc cathode spot

Keywords

anodes; cadmium; cathodes; copper; electron field emission; glow discharges; molybdenum; secondary electron emission; vacuum arcs; Cd; Cd anode; Cu; Cu anode; Mo; Mo anode; anode vapors; arc characteristics; broad cathode; current transport; glow discharge; high current density spotless vacuum arc; high density low voltage glow discharge; hump of potential; point anode; secondary electron emission; vacuum discharge burning; Anodes; Atomic measurements; Cathodes; Current density; Electrodes; Electron emission; Glow discharges; Low voltage; Surface discharges; Vacuum arcs;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 1996. Proceedings. ISDEIV., XVIIth International Symposium on

Conference_Location

Berkeley, CA

Print_ISBN

0-7803-2906-6

Type

conf

DOI

10.1109/DEIV.1996.545340

Filename

545340