Rotational transfer in diatom-diatom collisions

We present a kinematic hard ellipsoid model of rotational transfer in diato m-diatom collisions. The model extends the principles of the angular moment um (AM) model of rotational transfer (RT) developed for atom-diatom collisi ons and the hard ellipsoid model of the repulsive potential. Monte Carlo tr ajectory calculations are performed on the Na-2 + H-2 system which show exc ellent agreement with published experimental data, using only atomic masses and bond lengths as the input data. (C) 2001 Elsevier Science B.V. All rig hts reserved.