Cross sections for elastic scattering and excitation of the n=2 states of atomic hydrogen by electrons are computed for incident energies in the range from 12 to 54 eV. The calculations are based primarily on an 11-state expansion including seven pseudostates. Pseudothresholds and pseudoresonances are suppressed by appropriate averaging.

• Received 13 March 1985

DOI:https://doi.org/10.1103/PhysRevA.32.775