Abstract
We have measured the angular dependence of the dissociation cross section of H 2 + ions incident at 3–10 keV on rare gases and H 2. The results show qualitative agreement with theoretical predictions and also that for small internuclear distances in the H 2 + molecule the dissociation proceeds primarily from the 2pσ u state. For these internuclear distances the largest departure from the predicted curves has been interpreted as a simultaneous excitation of projectile and target atom. We have also measured the relative dissociation cross section as a function of the H 2 + internuclear distance. These measurements reveal evidence for a resonance excitation process.
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