Absolute total-cross-section measurements for intermediate-energy electron scattering on CF4, CClF3, CCl2F2, CCl3F, and CCl4

Abstract

The total cross sections of chlorofluoromethane molecules were measured in the 75–4000-eV range. A comparison is given with existing experimental and theoretical data. The present data and previous measurements in the 15–50-eV range were fitted with a Born-like formula. This simple fit allows the cross sections to be reproduced within experimental errors. Phenomenological double Yukawa scattering potentials can be derived from the formula. A short discussion for the total-cross-section partitioning is given for ${\mathrm{CF}}_4$, ${\mathrm{CF}}_2$ ${\mathrm{Cl}}_2$, and ${\mathrm{CCl}}_4$.