Transport phenomena in a completely ionized gas with large temperature gradients

Physics – General Physics

Scientific paper

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Boltzmann Transport Equation, Gas Transport, Plasma Dynamics, Plasma Temperature, Chapman-Enskog Theory, Electron Scattering, Ionized Gases, Temperature Gradients

Scientific paper

A solution to the Boltzmann equation is found that extends to large gradients and fields the classical Chapman-Enskog approximation developed by Spitzer and collaborators for electron transport in a fully ionized gas. The extended solution is used to calculate correction factors to the classical transport coefficients of a nonuniform plasma that depend on the temperature-gradient scale length as a parameter. These factors lead to inherently flux-limited heat flow with values in close agreement with Monte Carlo and numerical Fokker-Planck calculations.

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