Optical-potential model calculation of electron-hydrogen elastic scattering at intermediate and high energies

Elastic scattering of electrons from hydrogen in the energy range 30--400 eV is studied. The calculations are performed using an optical potential to improve the close-coupling approximation. The calculation at 30 eV employs an 18-state basis set emphasizing long-range pseudostates, while at 100 and 400 eV an 11-state basis containing more compact pseudostates is found to be more suitable. Differential elastic cross sections are presented and compared with experiments. Integrated elastic and total inelastic cross sections are also reported and compared with values estimated semiempirically.