Kinetic simulations of a direct-current positive-column Ar plasma revealed that electron fluxes are sensitive to energy dependence of an elastic collision cross section. Paradoxical behavior of the electron flux in a coordinate-energy phase space is presented. The direction of the electron flux at the “elastic” energy region (5–10 eV) in whole volume, except the region near the wall, turned out to be oppositely directed to that conventionally assumed.