CaH* potential curves: a simple theoretical treatment of intershell effects

This is the authors' abstract. We don't add key points for this paper.

Potential energy curves of the first 13 electronic states of CaH (in symmetries Sigma , Pi and Delta ) have been calculated. The calculation method consists of a limited configuration interaction (CI) with an empirical correction via an effective Hamiltonian. The correction accounts, in a very simple way, for the various intershell effects (in Ca), which are not taken into account by the authors' CI calculation. It leads to a good agreement with the available spectroscopic data on the CaH molecular states.