Abstract
The H+-H collision is investigated using the three-state molecular expansion, which takes account of the coupling between 2p sigma and the 2p pi states of the H2+ quasi-molecule. Differential cross sections for direct elastic scattering, resonant charge exchange and direct and exchange excitation of H(2p) have been computed for a range of incident proton energies from 150 eV to 2.84 keV and for a range of scattering angles from 0 to 10 degrees (in laboratory system). The agreement with the experimental results is excellent. The nature of non-adiabatic effects in low energy H+-H collisions is discussed in detail.
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