Box-based and Laguerre-based convergent close-coupling calculations of electron-helium ionization

摘要

We apply a new implementation of the convergent close-coupling (CCC) method to electron-helium scattering. The target states are obtained from one-electron He+ box-based eigenstates rather than the usual Laguerre-based orbitals. The utility of the new method is demonstrated for 50 eV electron-impact ionization of helium with three different energy sharings between the two outgoing electrons. Excellent agreement is found between previous and new CCC predictions, and also with experimental data. [References: 22]