Dynamics of the reaction of N+ with H2. IV. Reactive scattering at relative energies above 6 eV

Product velocity vector distributions for the reaction N+(H2,H)NH+ and its isotopic variants have been determined in the range of relative energies above 6 eV. The reaction is direct, and there is a critical relative energy above which the spectator stripping peak disappears and is replaced by a double intensity lobe structure. Some evidence of the reaction of electronically excited metastable ions, probably N+(1D), is found. The results are compared with the predictions of the sequential impulse model of reactive scattering. The agreement is generally good, except that more very large angle scattering is observed, particularly for the N+(HD,H)ND+ case, than is predicted by the model.