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

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

doi:10.1063/1.4922862

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

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

^*Corresponding author for this work

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Vacuum arc cathode spot motion was investigated on a "roof-shaped" aluminum cathode under an external magnetic field. The cathode included a flat roof-top and four sloped sides, inclined by an angle α. A high speed camera was used to observe cathode spot motion. The spot velocity on the slopes and the distribution of cathode spots on 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.

Original language	English
Article number	233303
Journal	Journal of Applied Physics
Volume	117
Issue number	23
DOIs	https://doi.org/10.1063/1.4922862
State	Published - 21 Jun 2015

Access to Document

10.1063/1.4922862

Cite this

@article{2d23aa895db6403a92aec16af003b06e,

title = "Cathode spot motion in a vacuum arc with a long roof-shaped cathode under magnetic field",

abstract = "Vacuum arc cathode spot motion was investigated on a {"}roof-shaped{"} aluminum cathode under an external magnetic field. The cathode included a flat roof-top and four sloped sides, inclined by an angle α. A high speed camera was used to observe cathode spot motion. The spot velocity on the slopes and the distribution of cathode spots on 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.",

author = "Beilis, {I. I.} and B. Sagi and V. Zhitomirsky and Boxman, {R. L.}",

note = "Publisher Copyright: {\textcopyright} 2015 AIP Publishing LLC.",

year = "2015",

month = jun,

day = "21",

doi = "10.1063/1.4922862",

language = "אנגלית",

volume = "117",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

number = "23",

}

TY - JOUR

T1 - Cathode spot motion in a vacuum arc with a long roof-shaped cathode under magnetic field

AU - Beilis, I. I.

AU - Sagi, B.

AU - Zhitomirsky, V.

AU - Boxman, R. L.

PY - 2015/6/21

Y1 - 2015/6/21

N2 - Vacuum arc cathode spot motion was investigated on a "roof-shaped" aluminum cathode under an external magnetic field. The cathode included a flat roof-top and four sloped sides, inclined by an angle α. A high speed camera was used to observe cathode spot motion. The spot velocity on the slopes and the distribution of cathode spots on 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.

AB - Vacuum arc cathode spot motion was investigated on a "roof-shaped" aluminum cathode under an external magnetic field. The cathode included a flat roof-top and four sloped sides, inclined by an angle α. A high speed camera was used to observe cathode spot motion. The spot velocity on the slopes and the distribution of cathode spots on 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.

UR - http://www.scopus.com/inward/record.url?scp=84935014362&partnerID=8YFLogxK

U2 - 10.1063/1.4922862

DO - 10.1063/1.4922862

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:84935014362

SN - 0021-8979

VL - 117

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 23

M1 - 233303

ER -

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

Abstract

Access to Document

Other files and links

Fingerprint

Cite this