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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Imprimir: 1093-3611
ISSN On-line: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v1.i2.90
pages 249-261

DESCRIPTION OF SOME PHENOMENA IN ELECTRIC ARC CATHODE REGION

Stephane Pellerin
GREMI, CNRS-Universite d'Orleans, BP 6759, 45067 Orleans Cedex 2, France LASEP, Universite d'Orleans - Antenne de Bourges, BP4043, 18028 Bourges, France
K. Musiol
Marian Smoluchowski Inst. of Physics, Jagellonian University, ul. Reymonta 4,30-459 Krakow, Poland
B. Pokrzywka
Mt.Suhora, Observatory of Cracow Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
E. Pawelec
Zaklad Fizyki Plazmy, Uniwersytet Opolski, ul. Oleska 48,45-052 Oplole, Poland
F. Richard
GREMI - Universite d'Orleans - BP 6759 - 45067 ORLEANS CEDEX 2
J.-M. Cormier
GREMI-ESPEO, CNRS-Universite d'Orleans, BP 6759, 45067 Orleans Cedex 2, France
J. Chapelle
LASEP, Centre Universitaire de Bourges, Rue Gaston Berger, BP 4043, 18028 Bourges Cedex, France

RESUMO

Photographic observation of the cathode tip and near electrode region of an electric arc, working at atmospheric pressure in argon permitted to observe some interesting phenomena, which take place in this region, e.g. existence of a "dark zone" between the plasma column and the cathode, low frequency (f<0.1Hz) fluctuations of emitted light, existence of several hot spots on the cathode surface at the same moment, movements of the arc spot and modification of the cathode surface structure.


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