Conductivity of ionized flowing gases

In a previous paper, the electron distribution function for a weakly ionized flowing gas in an electric field has been derived. The distribution function is used to calculate the conductivity of the flow. First, the gas molecules are considered as hard spheres. The resulting formula is identical in form to that obtained by Margenau, except that a correction term due to the flow speed is included in the temperature. Next, the gas is treated as Maxwell molecules. In this case, when the field is perpendicular to the flow, the expression reduces to the familiar form ne2/m (ν+iω), independent of the temperature and the flow speed