Studies of ionization of hydrogen atoms by electron impact in hyperspherical partial wave theory from below 1eV excess energies to intermediate energies.

Hyperspherical partial wave theory has been applied in the study of ionization of hydrogen atoms by electron impact from very low energies (1.0eV, 0.5eV and 0.3eV above threshold) to intermediate energies (60eV). The various ionization cross sections which have been calculated are generally in good agreement with the experiments. Some times the agreements are even better than those of other high level theories, like ECS and CCC theories, requiring elaborate computations. © 2003 American Institute of Physics [ABSTRACT FROM AUTHOR]