Abstract
A collisional-radiative model of argon plasma column at atmospheric pressure sustained in capillary tube by high-frequency electromagnetic wave is presented. The model is based on simultaneously solving the electron Boltzmann equation, the set of particle balance equations for electrons and heavy particles, and the electron energy balance equation. Six blocks of excited levels are included in the model. The electron energy distribution function (EEDF), the mean energy, the axial electric field, the mean absorbed power per electron, the ion densities, the densities of excited atoms are obtained as functions of the electron number density. The model predicts that the excited levels are not in local thermodynamic equilibrium, which is in agreement with the experimental data.
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