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Progress in Plasma Processing of Materials, 1999

ISBN Print: 1-56700-126-2

EMISSION SPECTRA AND THE ELECTRON PARAMETERS OF HIGHLY IONIZED ARGON AND NITROGEN ARC-PRODUCED PLASMA JETS IN DIVERGENT CHANNELS WITH A VORTEX STABILIZATION

Abstract

Emission spectra of argon and nitrogen plasmas realized in a high current (I ≤ 500A) plasmatron with a divergent stabilizing channel have been taken in the range 220−860nm by the use of two automated systems for multichannel analysis. The spectra of highly ionized argon and nitrogen plasmas at atmospheric pressure thus obtained have been extensively investigated in the vicinity of the cathode where the specific energy released is about 50 kW/cm3 as well as in the plasma relaxation zone at different distances downstream from the energy input region. For all the domains mentioned the electron component parameters concentration ne and temperature Te have been determined.
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