Theoretical investigation of collision induced dissociation in He + Na2 Original Research Article

A quantum mechanical investigation is made for the collision induced dissociation (CID) process, He + Na2 → He + Na + Na, by treating the vibrational and rotational degrees of freedom in fully decoupled approximation. The collision problem to be solved is simply reduced to the calculation of the scattering phase shift that depends parametrically on the molecular orientation and on the internuclear distance of the molecule. The present method gives a useful approach to study vibrational energy transfer and dissociation in collisions of heavy (or polyatomic) molecules which lie in any vibrational states.