Electron swarm parameters in carbon tetrafluoride

This communication reports the first rigorous study of electron swarm parameters in carbon tetrafluoride (CF4). To describe the available differential cross sections for electrons in CF4, we developed the analytical fits to these data, which were useful for Monte Carlo calculations. An agreement between calculated swarm parameters and recommended data of Christophorou, Olthoff, and Rao [J. Phys. Chem. Ref. Data 25, 1341 (1996)] was obtained. It was shown that errors in swarm parameters resulting from the isotropic scattering assumption were high for low and middle values of electric field to gas density ratios, wherein the isotropic electron scattering was considered traditionally.