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Article Dans Une Revue Journal of Physics: Conference Series Année : 2005

Role of molecular ions in plasmas of atmospheric and energetic interest

Résumé

Molecular ions often play a very important role in plasmas. The electron energy distribution function (eedf ) and density (ne ) are influenced by the reactions of molecular ions with electrons. We bring these aspects into focus by studying successively the following situations: We show that the dissociative recombination of Ar+ 2 allows to understand the measured characteristics of an argon supersonic plasma flow where the electron density is low. Afterwards, we show the dominating role of NO+ in the chemistry of a space vehicle atmospheric re-entry air plasma. Finally, by using the Boltzmann equation in order to show the influence of molecular ions such as NO+ in air plasmas on the eedf, we comment on the common assumption of Maxwell-Boltzmann equilibrium for this distribution.

Dates et versions

hal-02023307 , version 1 (18-02-2019)

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Arnaud Bultel, Bruno Chéron. Role of molecular ions in plasmas of atmospheric and energetic interest. Journal of Physics: Conference Series, 2005, 4, pp.205-210. ⟨10.1088/1742-6596/4/1/029⟩. ⟨hal-02023307⟩
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