Low energy inelastic electron scattering from carbon monoxide: I. Excitation of the a(3)pi, a '(3)sigma(+) and A(1)pi electronic states
Abstract
Differential scattering cross sections for electron excitation of the three lowest excited electron states of carbon monoxide are obtained experimentally using low-energy electron energy-loss spectroscopy and theoretically using theR-matrix method. The incident electron energies range from near-threshold of 6.3 eV to 20 eV.
Experimental scattering angles range from 20 degrees to 120 degrees. The normalization of the experimental cross sections is made to available experimental elastic scattering data (Gibsonet al1996J.
Phys. B: At.
Mol. Opt.
Phys.293197). TheR-matrix calculations use three distinct close-coupling models and their results are compared to available experimental and theoretical cross sections.
The overall comparison leads to significantly improved description of the excitation cross sections for this target.