Abstract
In this paper we study a partially ionized plasma that corresponds to an arc discharge at atmospheric pressure. We derive an inviscid hydrodynamic/diffusion limit, characterized by two temperatures, from a system of Boltzmann type transport equations modelling that plasma problem. The original property of this system is that impact ionization is a leading order collisional process. As a consequence, the density of electrons is given in terms of the density of the other species (and its temperature) via a Saha law.
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Choquet, I., Lucquin-Desreux, B. Hydrodynamic Limit for an Arc Discharge at Atmospheric Pressure. J Stat Phys 119, 197–239 (2005). https://doi.org/10.1007/s10955-004-2711-8
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DOI: https://doi.org/10.1007/s10955-004-2711-8