Cross sections for electron scattering from sulfuryl chloride fluoride (SO2ClF) molecules

Abstract

Absolute total cross section (TCS) for electron scattering from sulfuryl chloride fluoride (SO2ClF) molecules was measured in a linear transmission experiment at energies ranging from 0.6 to 370 eV. The experimental TCS energy function has a deep minimum (30 × 10−20 m2) at 3 eV which separates two distinct TCS enhancements. Below 3 eV the TCS curve increases steeply towards lower energies with a small resonant maximum visible near 2.2 eV. Above 3 eV the TCS is dominated by second pronounced enhancement with the maximum (45 × 10−20 m2) peaked near 9.5 eV. The experimental TCS findings are—at intermediate energies—satisfactorily reproduced with our total cross section estimation based on calculations of integral elastic (in independent atom approximation) and ionization (binary-encounter-Bethe approach) cross sections. The TCS measured for SO2ClF is also compared with experimental TCSs for molecules containing sulfur as a central atom and it is found that some features observed for SO2ClF are shared by others of the compared molecules.