Angular Distribution of Protons from Collisional Dissociation ofH2+. II. Vibrational Dissociation

Abstract

A classical-impulse binary-collision model is used to predict the laboratory angle and velocity distributions of protons resulting from the vibrational dissociation of ${\mathrm{H}}_{2}^{+}$ by He. The treatment is partly heuristic and is not a quantitative success, since the computed cross sections turn out to be roughly an order of magnitude too large compared to those for electronic excitation of the $2p{\ensuremath{\sigma}}_{u}$ state of ${\mathrm{H}}_{2}^{+}$. Nonetheless, the theory clearly identifies some major features of the experimental results of Gibson, Los, and Schopman as being due to vibrational dissociation.