DocumentCode
1194084
Title
Arc cathode spots: Their mechanism and motion
Author
Schrade, Herbert O.
Author_Institution
Inst. fuer Raumfahrtsyst., Stuttgart Univ., West Germany
Volume
17
Issue
5
fYear
1989
fDate
10/1/1989 12:00:00 AM
Firstpage
635
Lastpage
637
Abstract
Arc spots are usually highly unstable and jump statistically over the cathode surface. In a magnetic field parallel to the surface, they preferably move in the retrograde direction, i.e., opposite to the Lorentzian rule. If the field is inclined with respect to the surface, the spots drift away at a certain angle with respect to the proper retrograde direction (Robson drift motion). The phenomenon are explained by a unique stability theory
Keywords
arcs (electric); plasma transport processes; Lorentzian rule; Robson drift motion; arc cathode spots; cathode surface; highly unstable system; magnetic field; retrograde direction; stability theory; statistical jump; Cathodes; Electric breakdown; Electron emission; Equations; Helium; Magnetic fields; Plasma density; Plasma materials processing; Stability; Surface discharges;
fLanguage
English
Journal_Title
Plasma Science, IEEE Transactions on
Publisher
ieee
ISSN
0093-3813
Type
jour
DOI
10.1109/27.41170
Filename
41170
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