Inelastic excitation and charge transfer processes for oxygen in collision with H atoms.

Potential energy functions of the OH molecule are investigated from small to large inter-atomic distances R. The electronic problem is treated using an efficient Full Configuration Interaction (Full CI) approach that avoids orbital jumps found usually in multi-configuration self-consistent-field followed by multi-reference configuration interaction calculations of excited states. The calculations are performed for all the doublet, quartet, and sextet OH molecular states, up to the O(2p4s S) + H(1s S) asymptote, and for the lowest O + H and O + H ionic states.