Calculations of electron transport coefficients in Cl2-Ar, Cl2-Xe and Cl2-O2 mixtures

Abstract

In order to understand quantitatively plasma phenomena and ionized gases, accurate electron collision cross-sections and electron transport coefficients for not only pure atoms and molecules but also for the binary gas mixtures are necessary. Electron transport coefficients (electron drift velocity, density-normalized longitudinal diffusion coefficient, and density-normalized effective ionization coefficient) in mixture gases of Cl2 with Ar, Xe and O2, therefore, were calculated and analyzed by using a two-term approximation of the Boltzmann equation over a wide E/N range (ratio of the electric field E to the neutral number density N). The limiting field strength values of E/N, (E/N)lim, for these binary gas mixtures were also derived and compared with those of pure SF6 gas. These binary gas mixtures are being considered for use in many industries, depending on the mixture ratio and the particular application of the gas and the electrical equipment.