SPIN ASYMMETRY IN RESONANT ELECTRON-HYDROGEN ELASTIC-SCATTERING

Differential cross sections and asymmetries at 90-degrees and 30-degre es are calculated for electron-hydrogen elastic scattering over the en ergies of the lowest 1S and 3P resonances using a nine-state coupled-c hannel calculation with and without continuum effects, which are repre sented by an equivalent local polarization potential. The polarization potential improves agreement with experiment in general for the spin- averaged cross sections. It is suggested that continuum effects would be critically tested by asymmetry measurements at 30-degrees over the 1S resonance.