A close-coupling study of collision-induced dissociation in He + H2

The previous quantum mechanical close-coupling study of the dissociative collisions in He + H2 (T-shape configuration) by the present authors [Chem. Phys. Letters 216 (1993) 613] has been extended to a wide range of the total energy 4.8-7.5 eV. The dissociation process shows a clear vibrational enhancement. The dissociation probability has an undulation as a function of the total energy, and by using classical S-matrix theory it is shown that this feature is caused by interference of the contributions of multiple trajectories.