Near-resonant electronic energy transfer induced by first- and second-order long-range potentials between the two states A1Σ u+ and X1Σ g+ of Li 2 and Na 2

Abstract

Collision-induced rotational transitions between different electronic states are treated theoretically in the Born approximation for a second-order long-range interaction potential. It is shown that the experimentally observed cross sections for resonant channels in the A → X transfer of Li 2 are reproduced by this simple calculation taking the two terms' first-order dipole-dipole and second-order interaction potentials into consideration.