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Modification of the Coulomb Logarithm due to Electron-Neutral Collisions
G J M Hagelaar1, Z Donko2, N Dyatko3
1LAPLACE, University of Toulouse, CNRS, 118 Route de Narbonne, 31062 Toulouse, France.
Abstract:
We demonstrate that in partially ionized plasmas, Coulomb scattering can be significantly perturbed by electron collisions with neutral gas particles, and that this effect can be incorporated in the Coulomb collision terms of the Boltzmann equation by a modification of the classical Coulomb logarithm. We show that Boltzmann transport calculations using this modified Coulomb logarithm are in excellent agreement, for a sensitive model problem and a wide range of conditions, with particle simulations describing the many-body Coulomb interactions from first principles.
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