Created by Igor Bray and Yuri Ralchenko and modified by Karen Lewis to include magnetic sublevel data for helium

• The CCC method yields accurate excitation and ionisation cross sections for atomic and ionic targets which are well-modelled by one or two valence electrons above a Hartree-Fock core.
• Inner core ionisation can be a major contributor to the total ionisation cross section. Such contributions can be estimated using various forms of Born-based approximations. Contact me at I.Bray@curtin.edu.au for details.