Ionization cross sections in collisions of antiprotons (p̄) with H₂⁺ molecules are calculated for incident energies in the range of 2--5000.3em0exkeV by using a semiclassical impact-parameter method. The electronic motion is solved in a numerically accurate manner by means of a discrete variable representation. A sudden approximation is applied to the description of the molecular rotation and vibration. The present p̄+H₂⁺ ionization cross sections are compared with the theoretical results of the ionization in p̄+He⁺ and the experimental results of the production of H⁺ ions in p̄+H₂.
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Kazuhiro Sakimoto (2005) studied this question.
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