Hoffmann, T. H. Hotop, H. Allan, Michael 2008-09-17 Energy-dependent absolute angle-differential cross sections (θ = 135°) for elastic and vibrationally inelastic electron scattering from OCS molecules have been investigated at high resolution (13 meV). The elastic cross section, reported over the range <i>E</i>= 0.06–20 eV, exhibits a deep Ramsauer–Townsend minimum near 0.55 eV and the π*(1.2 eV) and σ*(3.8 eV) resonances known from earlier experimental and theoretical work. The excitation functions for vibrational excitation (VE) of the fundamental CS stretch (1 0 0), the CO stretch (0 0 1) as well as for the fundamental and harmonics of the bending (0 <i>n</i> 0) mode are reported from threshold up to <i>E</i> = 8 eV. VE is mediated—in part in a mode-selective way—by threshold peaks and the higher lying resonances. The selectivity in the threshold region can be rationalized in terms of symmetry arguments where the ²Σ virtual state excites preferentially the σ vibrational states with even quanta of bending vibration over the π vibrational states with odd quanta of bending vibration. The σ*_CS resonance is essentially inactive in VE of the CO stretch and the bending mode. application/pdf https://folia.unifr.ch/global/documents/301069 https://folia.unifr.ch/documents/301069/files/allan_rsl.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-4075/41/19/195202 info:eu-repo/semantics/openAccess License undefined Journal of Physics B: Atomic, Molecular and Optical Physics. - 2008, vol. 41, no. 9, p. 195202 info:eu-repo/classification/udc/54 Resonance structure in low-energy electron scattering from OCS http://purl.org/coar/resource_type/c_6501