Abstract
Preliminary results which will be used for calculations of dissociative recombination (DR) of electrons with the CO2+ dication are presented. The measurements of CO2+ dissociative recombination rates, the first for any multiply charged target, were obtained at the ASTRID heavy ion storage ring. The present study starts from the potential energy curves for the first 7 electronic states of CO2+ and results for low-energy e− – CO2+ scattering that were obtained in recent R-matrix calculations (Vinci and Tennyson 2004 J. Phys. B 37 2011). Meanwhile, in order to apply an MQDT-type approach that has been previously used for NO+, we concentrate on partial the resonance series converging to the 1Δ target state in the CO+ 2Σ+ symmetry. The quasi-discrete vibrational spectrum of the CO2+ ground electronic state is explored.
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