Determination of Electron Collision of Cross-Sections for the H2 Molecule for Plasma Discharge Simulation

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Momentum transfer cross-section, rotational cross-sections, vibrational cross-sections, and electronic excitation cross-sections for H2 molecule for plasma discharge simulation have been determined from measured and calculated electron transport coefficients in H2--Ar mixtures and in pure H2 gas at 293 K using the electron swarm study and the two-term approximation Boltzmann solution for energy. The set of electron collisions cross-sections for H2 molecule reproduced the experimental transport coefficients in pure H2 gas and in 0.5% and 4% H2--Ar mixtures. The reproduced transport coefficients such as electron drift velocity (W), longitudinal diffusion coefficient per mobility ratio (D_{\text{L}}/\mu), transverse diffusion coefficient per mobility ratio (D_{\text{T}}/\mu) and ionization coefficient per density ratio (\alpha/N) in pure H2 gas and W, D_{\text{T}}/\mu in H2--Ar mixtures were within \pm 5% deviation from experimental results. The cross-section set also yielded drift velocity in 10.91% H2--He mixture within 0--2%.
2012-10-15