Stereodynamics study of reactions N(²D)+HD→NH+D and ND+H

The product polarizations of the title reactions are investigated by employing the quasi-classical trajectory (QCT) method. The four generalized polarization-dependent differential cross-sections (PDDCSs) (2\pi/\sigma)(\rm d\sigma_00/\rm d\omega_t), (2\pi/\sigma)(\rm d\sigma_20/\rm d\omega_t), (2\pi/\sigma)(\rm d\sigma_22+/\rm d\omega_t), and (2\pi/\sigma)(\rm d\sigma_21-/\rm d\omega_t) are calculated in the centre-of-mass frame. The distribution of the angle between k and j^\prime, P(\theta _r), the distribution of the dihedral angle denoting k-k^\prime-j^\prime correlation, P(\phi _r), as well as the angular distribution of product rotational vectors in the form of polar plots P(\theta _r ,\phi _r ) are calculated. The isotope effect is also revealed and primarily attributed to the difference in mass factor between the two title reactions.