Elastic scattering of electrons from H2+: phaseshifts, quantum defects and two-electron excited states

Abstract

The spheroidal s- and p-wave phaseshifts for the scattering of electrons from H₂⁺ are calculated by the Kohn variational method in the prolate spheroidal coordinate system. Two-centre Coulomb wavefunctions are employed as the long-range basis functions. Adiabatic quantum defects are obtained by extrapolation of the phaseshifts to the low-energy limit. Two-electron excited resonances found in the p-wave scattering are analysed.