The effect of Li+Li− ion-pair interaction on the vibrational energy spectrum of the second excited state of Li2 of 1Σ g+ symmetry

Publisher Website
Google Scholar
Abstract
The outer limb of the potential energy curve for the second excited 1Σg+ state of Li2 is dominated by the Li+–Li− ion–pair interaction. Consequently, the curve has a double minimum and has an unusual pattern of vibrational energy levels. We obtain excellent agreement with the vibrational levels 0⩽v⩽12 deduced from optical double resonance spectra.