Dynamics of the reaction He + H2+ → HeH+ + H on the Aguado-Paniagua surface

Collinear reaction probabilities, and differential and integral cross sections for the reaction He + H+2 → HeH++ H in three dimensions have been computed using a new analytic fit of the ab initio potential-energy values for the system and compared with those obtained using an earlier reported fit and also with the available experimental results. While the results on the two fitted surfaces are indistinguishable from each other for many of the reaction attributes for different initial vibrational (v) states of H2+ over a range of relative translational energy of reactants, there are some noticeable differences between them for the reaction from the v=1 state of H2+.