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A one-channel model, previously used for He, is extended to allow calculation of elastic scattering by H^- and Li⁺ at energies up to 3 Ry. Nonseparable ground-state wave functions are used, allowance being made for exchange, and dipole and quadrupole polarization potentials. Results for Li⁺ are in good agreement with quantum-defect-method values. Calculated differential cross sections for elastic scattering by H^- at energies of {} and 1 Ry are presented. Deviations from Couloumb scattering are marked. Phase shifts ($l=0, 1$) for higher members of the isoelectronic sequence (4≤Z≤10) are given at threshold and 1 Ry.
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M R C McDowell (1968) studied this question.
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