Angular momentum kinematic effects

These Ba reactions fall into a class of kinematically constrained reactions H + H L HH + L, where H and L denote heavy and light atoms, respectively [116,117], One consequence is that initial orbital angular momentum is channelled into rotational angular momentum of the diatomic product. With the assumption of constant product recoil energy, which can be used to interpret the dynamics of a number of Ba(lS) reactions [118], the formation of low and high v product vibrational levels is associated with large and small impact parameters, respectively. Thus, the variation of the spin-orbit effect with product vibrational level for the Ba( D) reactions provides information on the dependence of the reaction dynamics on incident impact parameter. 

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