FINITE-ELEMENT ANALYSIS OF ELECTRON-HYDROGEN SCATTERING

The Schrodinger equation for electron-hydrogen scattering is solved di rectly using finite-element analysis. Below the n = 2 threshold, accur ate phase shifts for 0 less-than-or-equal-to L less-than-or-equal-to 3 are obtained and compared with variational and R-matrix results. Reso nance positions and widths are also calculated and are in good agreeme nt with other theoretical values. Above the n = 2 threshold, partial-w ave contributions to the cross sections sigma1s-1s, sigma1s-2s, and si gma1s-2p are calculated and compared with those obtained using close-c oupling and R-matrix methods. Wave functions are shown for both elasti c and multichannel scattering.