LOW-ENERGY-ELECTRON SCATTERING BY HALOMETHANES - ELASTIC AND DIFFERENTIAL CROSS-SECTIONS FOR CF4

Low-energy quantum calculations are carried out for electrons scatteri ng by CF4 molecules in their ground electronic stales. The correspondi ng elastic cross sections (rotationally summed) are obtained as integr al quantities and as angular distributions, i.e., differential cross s ections (DCS), over a range of collision energies from approximate to 3 eV up to 35 eV. The exact static exchange (ESE) results compare well with experiments and with previous calculations. The inclusion of a m odel polarization potential is shown to generally improve results, esp ecially at low collision energies and in the small-angle scattering re gion. (C) 1996 American Institute of Physics.