Impact parameter approach to three-dimensional vibrationally inelastic ion (atom) –molecule collisions: Application to H++H2

Application of the straight-line impact parameter method is made to scattering of ions (atoms) on molecules at energies Ec.m.≳10 eV. Two different quantum versions of a DECENT-like model are applied to calculate integral and differential excitation cross sections for H++H2 scattering on the lowest diabatic singlet surface. We find good agreement with experimental data and with other theoretical results.