Momentum transfer cross section for oxygen molecule by electron transport coefficients in the O/sub 2/-Ar mixtures and in pure O/sub 2/ molecule

摘要

We measured electron transport coefficients, the electron drift velocity, W, and the product of the gas number density and the longitudinal diffusion coefficients, ND/sub L/, in the 1.01% and 4.994% O/sub 2/-Ar mixtures and pure O/sub 2/ over the range of E/N 0.01/spl sim/350.0 Td. The measurements have been carried out by the double shutter drift tube method,and a two-term approximation of the Boltzmann equation analysis were used to study electron transport coefficients. We compared measured results and calculated results, and we determined the momentum transfer cross section for O/sub 2/ molecules.