Abstract

The electron energy distribution function (eedf) in expanding nitrogen arcs has been obtained by solving a Boltzmann equation including elastic, inelastic, and superelastic terms. Different realistic hypotheses on the concentrations of vibrationally and electronically excited states as well as on the ionization degree have been assumed. The results show that eedf and related coefficients are strongly dependent on the concentrations of excited states that superimpose structures to the bulk of eedf.

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