S-wave model for electron-hydrogen scattering

The $R$ matrix with pseudostates and convergent close-coupling methods are applied to the calculation of elastic, excitation, and total as well as single-differential ionization cross sections for the simplified $S$-wave model of electron-hydrogen scattering. Excellent agreement is obtained for the total-cross-section results obtained at electron energies between 0 and 100 eV. The two calculations also agree on the single-differential ionization cross section at 54.4 eV for the triplet spin channel, while discrepancies are evident in the singlet channel, which shows remarkable structure.