Comparison of the spin-orbit selectivity of reactions involving atoms in a ~2P or ~3P state and a linear molecule in a #PI# or #SIGMA# state at very low temperature

摘要

In this work, we treat the general case of an atom in a ~2P or ~3P electronic state reacting with a linear molecule in a ~2#PI#, ~2#SIGMA# or ~3#SIGMA# electronic state. We demonstrate that the spin-orbit selectivity of the rate constant at low temperatures (T < 10 K) is associated with the different contributions to the long-range intermolecular potential calculated in the spin-orbit basis set of the reactants. We given examples of applications to a few reactions of astrophysical interest.