3Δ bound and continuum states of the TiO molecule

A detailed study of the various Rydberg resonance series found in the 3 Δ symmetry for electron collisions with the titanium oxide cation is presented. A three-state valence configuration interaction (VCI) approximation is used to represent the target molecular states of the cation within the R -matrix methodology. Electron scattering calculations by the TiO + ion yield eigenphase sums, their derivative and associated cross sections. Strong resonance structure is found in the 3 Δ scattering symmetry with the prominent resonance series being comprehensively identified and analysed. Several interloper resonances are revealed which have been assigned to the appropriate parent state. The presence of these interlopers is seen to cause perturbations on the relevant spectral series disrupting the regular Rydberg series pattern. Closed channel electron scattering calculations by the TiO + cation provide bound and Rydberg states of the TiO complex which are identified and analysed in this letter.