A multi-component transport model for non-equilibrium low-temperature low-pressure plasmas

Thomas Senega, Ralf Peter Brinkmann

2006 J. Phys. D: Appl. Phys. 39 1606


A unified transport model for the bulk of a non-equilibrium low-temperature plasma is presented which consists of a fluid description of the heavy particles (neutrals and ions) in local thermal equilibrium, a reduced kinetic equation for the electrons and the assumption of quasi-neutrality. The transport model of the heavy particles is derived by approximately solving a linearized multi-component Boltzmann equation with the help of an expansion into tensorial Hermitian polynomials, while the electron model is taken from the literature. The description accounts for drift, ordinary diffusion and thermal diffusion, as well as for the effects of heat conduction and viscosity. The relation of the model to previously formulated transport theories is discussed and estimates for its range of validity are given.


Tags: bulk, fluid description, heavy particles, inearized multi-component Boltzmann equation, local thermal equilibrium, non-equilibrium low-temperature plasma, quasi-neutrality, reduced kinetic equation, tensorial Hermitian polynomials, transport model