Low-energy electron-impact ionization of atomic hydrogen with equal energy outgoing electrons

Abstract

The convergent close-coupling method is applied to electron-impact ionization of the ground state of atomic hydrogen at incident energies of 15.6, 17.6, 20, 25 and 30 eV. Absolute fully differential cross sections are presented for the case of equal energy sharing of the excess energy. Comparison with experiment shows some unexpected discrepancies with the overall agreement being best at the lowest, and most difficult for experiment and theory, energy considered.