Coupled-channels optical calculation of electron-hydrogen resonances

Abstract

An application of the coupled-channels optical method to energy-dependent phenomena, electron-hydrogen resonances for n=1 and 2, is given. The equivalent-local approximation is made for the optical potential. The calculation includes nine explicity coupled channels. The optical potential accounts for the target continuum. The good agreement with experiment shows the role played by the optical potential in the coupled-channels calculation. Some additional resonances have been found.