Dissociation of H+2 ions by collisions with electrons

We have studied the electron impact dissociation of vibrationally excited H+2. A distribution of initial vibrational states given by the overlap factors between the vibrational ground state of H2 and different vibrational levels of H+2 has been considered. It was found that the relative contributions of the initial vibrational levels to the dissociative excitation cross section mimic the vibrational distribution of the H+2 molecular ion for electron energies larger than the energy difference between the energy of the repulsive state 2Σ+u and that of the lowest vibrational level of the ground state X2Σ+g at the outer classical turning point.