C-R Model for Ar plasmas using reliable excitation cross-sections

Abstract

We have used reliable electron excitation cross sections in a simple Collisional-Radiative Model (CRM) to obtain the population densities of various excited levels for low electron temperature Ar discharges. Cross sections are obtained by using relativistic distorted wave theory for transitions from ground as well as excited states to the different higher lying levels of the Ar atom. We have compared our calculated population density results for 3p54s levels with recent exp erimental OES measurements.