Figure 16. (A, B) Probability of short range and vdW trapping for the collision energies and
angles studied. (C, D) Comparison between two trajectories undergoing short-range (green) and
vdW (red) trapping; the distance from the surface (Z) and the kinetic energy along Z (KZ ) are
plotted as a function of time. In panel (D), the interaction potential calculated at Z=4 Ang
is plotted as an horizontal black line.