Total cross sections for electron scattering on NO₂, OCS, SO₂at intermediate energies

Abstract

Total cross sections for electron scattering on SO2, NO2, OCS have been measured in the energy range from 90 to 4000 eV. Our data extrapolated to low energies match other experiments on OCS and NO2; for SO2 discrepancies amount to as much as 20%. The experimental values for these gases and for CO2 (the latter measured previously in our laboratory) have hen fitted with a Born-like formula. Two parameters are sufficient to reproduce the SO2, NO2 and CO2 cross sections from 20 to 4000 eV within the experimental errors. A double Yukawa potential with four parameters is needed to reproduce the OCS cross sections over the same energy interval.