Angular Distribution of Ion Current Emerging From an Aperture Anode in a Vacuum Arc

Yuval Cohen, S. Goldsmith, Raymond L. Boxman

Research output: Contribution to journalArticlepeer-review

Abstract

The ion current distribution emerging from a vacuum arc between a Cu cathode and a conical ring anode was measured by a set of five probes. It was found that 1) the total ion current emerging through the anode was 8.5 percent of the arc current, 2) the measured ion distribution without a magnetic field was a slightly flattened cosinusoidal function, 3) with an axial magnetic field, the ion current distribution became peaked along the z axis, 4) the total ion current extracted through the anode aperture slightly increased with the magnetic field, and 5) an anode with a larger aperture exhibited less magnetic collimation.

Original languageEnglish
Pages (from-to)713-716
Number of pages4
JournalIEEE Transactions on Plasma Science
Volume17
Issue number5
DOIs
StatePublished - Oct 1989
Externally publishedYes

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