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 TVT, 2013, Volume 51, Issue 2, Pages 176–182 (Mi tvt71)

Plasma Investigations

Dynamics studies of cathode spots in a vacuum-arc discharge with ring electrodes

E. F. Prozorov, K. N. Ul'yanov, V. A. Fedorov

All Russia Institute of Electrotechnics, Moscow, Russia

Abstract: The effect of an external pulse magnetic field with axial and radial components on electric characteristics of the discharge and the configuration of cathode spots of a vacuum arc discharge with ring electrodes is studied experimentally. For arc currents within the range of $0.05$$2$ kA, shots of the cathode spots at different instants of time are obtained. The dependences of the number of the spots on the discharge current and the mean current per spot are determined. It was found that the expansion rate of the cathode spots area depends significantly on the instant value of the discharge current. It is shown that, when the pulse magnetic field is applied, the discharge voltage increases and the discharge current and number of the cathode spots decreases. It was found that the current interruption is a probability process. The probabilities of the current interruption depending on the maximal value of the external pulse magnetic field induction are determined.

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English version:
High Temperature, 2013, 51:2, 153–159

Bibliographic databases:

UDC: 537.525.5

Citation: E. F. Prozorov, K. N. Ul'yanov, V. A. Fedorov, “Dynamics studies of cathode spots in a vacuum-arc discharge with ring electrodes”, TVT, 51:2 (2013), 176–182; High Temperature, 51:2 (2013), 153–159

Citation in format AMSBIB
\Bibitem{ProUlyFed13} \by E.~F.~Prozorov, K.~N.~Ul'yanov, V.~A.~Fedorov \paper Dynamics studies of cathode spots in a vacuum-arc discharge with ring electrodes \jour TVT \yr 2013 \vol 51 \issue 2 \pages 176--182 \mathnet{http://mi.mathnet.ru/tvt71} \elib{http://elibrary.ru/item.asp?id=18822180} \transl \jour High Temperature \yr 2013 \vol 51 \issue 2 \pages 153--159 \crossref{https://doi.org/10.1134/S0018151X1302017X} \isi{http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&DestLinkType=FullRecord&DestApp=ALL_WOS&KeyUT=000320157900003} \elib{http://elibrary.ru/item.asp?id=20445667} \scopus{http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-84880656626} 

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Citing articles on Google Scholar: Russian citations, English citations
Related articles on Google Scholar: Russian articles, English articles

This publication is cited in the following articles:
1. E. F. Prozorov, K. N. Ulyanov, V. A. Fedorov, “Switching of the Vacuum-Arc Discharge Direct Current”, High Temperature, 52:2 (2014), 179–184
2. A. E. Balanovskiy, “Invisible structure of the cathode spot of a welding arc with a tungsten anode and a film cathode burning in an inert gas”, High Temperature, 57:1 (2019), 8–16
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