Elastic scattering of electrons from positronium (Ps) in the {ε}<5.105 eV energy region is considered. The calculations have been done on the basis of the adiabatic method, where this three-body problem reduces to multichannel scattering theory. Our results unambiguously establish the existence of an s-wave resonance at εᵣ{}0.6 eV.
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Melezhik et al. (1988) studied this question.
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