Distribution of cathode spots in vacuum arc under nonuniform axial magnetic fields

  • Zongqian Shi
  • , Shenli Jia
  • , Lijun Wang
  • , Xingwen Li
  • , Zheng Wang

Research output: Contribution to journalArticlepeer-review

Abstract

Recent results on the distribution of vacuum arc cathode spots (CSs) in nonuniform axial magnetic field (AMF) are presented. Based on previous studies, we deem that two contrary influences of AMF, inward effect and outward effect, are attributed to CSs distribution. With this notion, we have analyzed the controlling effectiveness of nonuniform AMF on CSs distribution. Experiments were conducted in a detachable vacuum chamber with iron-style AMF electrodes. Images of vacuum arc column and the distribution of CSs were photographed with a high-speed charge coupled device (CCD) camera. Experimental results agreed well with the theoretical analysis.

Original languageEnglish
Pages (from-to)666-669
Number of pages4
JournalPlasma Science and Technology
Volume9
Issue number6
DOIs
StatePublished - 1 Dec 2007

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