A simple analytic expression for the Coulomb-Glauber-Ochkur amplitudes is derived for the exchange scattering of electrons from hydrogenic ions. The exchange amplitude is combined with the direct Coulomb-Glauber amplitude, derived by Thomas and Franco, to calculate the exchange-corrected cross section for the process e+He⁺(1s)→e+He⁺(2s). The results are compared with other theoretical calculations and experimental data.
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Williamson et al. (1978) studied this question.
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