Charge transfer in H+–He+(1s) collisions

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Abstract
A new straightforward technique for the calculation of cross sections for electron capture by structureless ions into arbitrary n, l, and m states from the ground state of hydrogenic targets has been presented in the framework of the continuum–intermediate state approximation. We reduce the scattering amplitude to a closed analytical form. We apply this method for the nonsymmetric process H+ + He+(1s) → H(1s, 2s, 2p, 3s, 3p, 3d) + He2+ in the laboratory energy range 50–10 000 keV. Our calculated results are compared with experimental data and existing theoretical calculations.

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