A quantum-classical study of the OH + H 2 reactive and inelastic collisions

We carried out a study of OH + H 2 scattering using a quantum-classical method, treating quantally vibrations and classically both translations and rotations. The good agreement between the state specific quantum-classical reactive probabilities and the corresponding quantum ones prompted the extension of the study to state to state probabilities for non reactive vibrational energy exchange. The study showed that H 2 reactive dynamics depends on the vibrational excitation, while the non reactive one is mainly vibrationally adiabatic. On the contrary, OH reactive dynamics is not affected by its vibra-tional excitation, whereas the non reactive one might produce some pumping up to higher vibrational states.