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Generation of Anode Spot in Low‐Current DC Vacuum Arcs by the Effect of Embedded Magnet in the Anode
Author(s) -
Kobayashi Kazuki,
Wanninayake W. M. R. R.,
Yanagidaira Takeshi,
Sato Naoyuki,
Tsuruta Koichi
Publication year - 2008
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.20262
Subject(s) - anode , magnet , materials science , current (fluid) , vacuum arc , plasma , ion , optoelectronics , electrode , cathode , electrical engineering , chemistry , physics , nuclear physics , engineering , organic chemistry
Experiments were conducted with the aim of keeping low‐current DC vacuum arcs stable. A permanent columnar magnet was embedded in the anode and a permanent disk‐shaped magnet was arranged behind the anode. As result, the arc plasma is strongly constricted to a column and a light emitting point appeared on the anode surface. Generation of the anode spot was confirmed by detecting anode metal vapor and ions using mass and spectroscopic analyses under low‐current arcs of less than 20 A. Copyright © 2008 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.