Abstract
Multichannel quantum defect calculations for NO+dissociative recombination (DR) for electron energies from thresholdto 8 eV are presented. The calculations use electronic energiesand autoionization widths of valence states obtained from ab initio R-matrix calculations with the correspondingpotential curves calibrated using available spectroscopic data.Six valence states open to dissociation are included in thefinal calculations. Excellent agreement with the measured crosssections is obtained for the low-energy DR, up to 3 eV and, forthe first time, the peak observed in the cross section at highenergy is accounted for. The importance of the variousdissociative states at different electron energies, as well asthe direct and indirect processes, is discussed. Compared toprevious theoretical studies, the inclusion of a thirddissociative state of 2Π symmetry and the largerautoionization width of the B' 2Δ state are found to beparticularly important for the agreement with experiment.
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