Abstract: Stereodynamics for the S(1D)+D2 reaction have been studied at a collision energy of 22.18 kJ·mol-1 on an ab initio potential energy surface by using time-independent quantum reactive scattering theory. The calculated differential cross sections show forward/backward peaking with weakly asymmetry, which is in agreement with the quasiclassical and experimental results. The state-resolved polarization-dependent differential cross sections and polarization parameters show that the product polarization tends toward a less anisotropic distribution, which indicates existence of a long-lived complex during the reaction because of the existence of deep well on the potential energy surface.

Key words: Stereodynamics, Long-lived complex, Polarization-dependent differential cross section, Polarization parameter