TIME AND SPATIALLY RESOLVED SPECTROSCOPY OF THE PLASMA STATE PRIOR TO AND DURING ANODE SPOT FORMATION IN HIGH CURRENT VACUUM ARCS.

B. Gellert, E. Schade, R. L. Boxman

Research output: Contribution to conferencePaperpeer-review

Abstract

The emission of numerous lines was measured for a vacuum arc between an Al cathode and a Cu anode in which the diffuse, anode spot, and intense arc modes are observed in a single pulse. An increase in Cu emission and a decrease in Al emission are observed at the transition to the anode spot mode, and an increase in both Al and Cu emission are observed at the transition to the intense arc mode. Spatial excited state density profiles and Boltzmann distribution temperatures could be obtained at several positions in the gap.

Original languageEnglish
Pages139-142
Number of pages4
StatePublished - 1984
Externally publishedYes

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