Electron scattering cross sections for SF6 and SF5CF3 at intermediate and high energies (100-10000 eV)

Abstract

A modified experimental apparatus with improved angular resolution and stability has been used to measure the total electron scattering cross sections for SF6 and SF5CF3 in the energy range of 100-5000 eV. A detailed analysis of the experimental error sources is provided. The experimental results are compared with integral elastic and inelastic cross sections calculated using the independent atom model approximation and a modified single-center additivity rule for electron energies ranging from 1 to 10,000 eV. The accuracy of these approximations method is discussed through a comparison with the experimental results. Previous cross-sectional data for SF6 are compared with the present theoretical and experimental results. For SF5CF3, we present the first electron scattering cross-sectional data for the 100-10,000 eV energy range, as well as the first empirical determination of the molecular polarizability. © 2005 The American Physical Society.