Fluid modeling and coherent Rayleigh-Brillouin scattering measurements of gas temperature in a xenon DC glow discharge plasma

Plasma fluid models that include both plasma chemistry and gas heating mechanisms are necessary to better understand the nonequilibrium nature of plasma flows in industrial plasma sources. In this talk, we present the development of a plasma fluid simulation for a weakly ionized DC glow discharge. As the characteristic times for the transport and reactions between charged (ions and electrons) and neutral species are separated, different time steps are applied to update the charged and neutral species, so that the simulation is accelerated to obtain steady-state solutions efficiently. The preliminary results of the steady-state neutral temperature profile from a 1D radial simulation are in agreement with experimental measurements obtained using coherent Rayleigh-Brillouin scattering (CRBS), in which the translational temperature of the neutral species is estimated by measuring the velocity distribution functions of neutral atoms.