Cathode spot motion in a vacuum arc with a long roof-shaped cathode

I. I. Beilis, B. Sagi, V. Zhitomirsky, R. L. Boxman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Vacuum arc cathode spot motion was investigated on a 'roof-shaped' aluminum cathode. This roof geometry included flat roof-top and four sloped sides, inclined by an angle α. A high speed camera was used to observe cathode spot motion in an external axial magnetic field. The spot velocity on the slopes and the distribution of cathode spots between the roof and slopes was determined. It was obtained that under a magnetic field the spot motion on the roof was slow (<1m/s) and mainly random, while on the slopes fast retrograde motion was observed. This velocity increased linearly with the magnetic field, and decreased slightly with α. The general behaviour of the spot motion agreed with previously published data.

Original languageEnglish
Title of host publicationISDEIV 2014 - Proceedings of the 26th International Symposium on Discharges and Electrical Insulation in Vacuum
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages213-216
Number of pages4
ISBN (Electronic)9781479967506
DOIs
StatePublished - 18 Nov 2014
Event26th International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV 2014 - Mumbai, India
Duration: 28 Sep 20143 Oct 2014

Publication series

NameProceedings - International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV
ISSN (Print)1093-2941

Conference

Conference26th International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV 2014
Country/TerritoryIndia
CityMumbai
Period28/09/143/10/14

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