Characteristics of Vacuum-Arc Cathode Spots on the Refractory Metal Electrodes

The paper describes investigation of characteristics of vacuum-arc cathode spots on refractory metal electrodes (Mo, W) that depend on magnetic field and the arc current and length: velocity of spot motion, average current per spot, and Robson angle. In the experiments, the arcs have lengths h={2} a...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2013-08, Vol.41 (8), p.1917-1922
Main Authors: Chaly, Alexey M., Barinov, Yury A., Minaev, Vladimir S., Myatovich, Stanislav U., Zabello, Konstantin K., Shkol'nik, Sergey M.
Format: Article
Language:English
Subjects:
Cathode spot
Cathodes
Comparative analysis
Electrodes
magnetic field
Magnetic fields
Plasma physics
Tungsten
Vacuum arcs
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Summary:The paper describes investigation of characteristics of vacuum-arc cathode spots on refractory metal electrodes (Mo, W) that depend on magnetic field and the arc current and length: velocity of spot motion, average current per spot, and Robson angle. In the experiments, the arcs have lengths h={2} and 6 mm and are subjected to magnetic field inclined to the cathode surface. The cathode surface is filmed during arcing by high-speed photography camera. The results obtained are compared with ones found in the literature.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2013.2249536