Abstract
The proton-hydrogen ground state charge transfer process is studied in a first order approximation in which the proton-proton interaction is treated as belonging to the unperturbed part of the problem. This results in the appearance of a Coulomb wave rather than a plane wave in the final state of the T matrix. The result is a cross section which lies between the Brinkmann-Kramers and Jackson-Schiff results, with the high energy limit of 0.810 sigma BK.

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