Exact Semiclassical Transition Probabilities for Collinear Collisions

The N-state semiclassical approach is used in the calculation of transition probabilities for atom–diatomic molecule collinear collisions. The diatomic molecule is allowed to oscillate during the generation of the classical trajectories. Comparisons are made with techniques in which the diatomic molecule is constrained to be nonoscillatory as the classical trajectories are traced out. The semiclassical method is extended to include diatomic–diatomic and atom–triatomic molecule collisions with use of the energy conservation equation.