Abstract

The radiation-transport coupled particle-in-cell model is applied to one-dimensional planar model to investigate the radiation trapping phenomena in relatively high- and low-pressure Ar glow discharges. The radiation intensity spectra and the total radiation flux are calculated from the radiative excited-state profile. The simulation results for Doppler and resonance collision broadenings are compared with the eigenmode description of the Holstein equation, with good agreement. Observed are the effects of radiation trapping of photons, diffusion, collisional quenching, and step ionization from excited states on the discharge properties.

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