Electronic states in which two electrons are highly excited offer the possibility to study in great details correlated electron dynamics and the three-body quantum-mechanical problem. In a combined experimental and theoretical study we investigated the planetary states of the Sr atom, in which strong correlations in the two-electron motion lead to dynamics ressembling the one of planets in a solar system. These correlations also lead to unexpected effects such as strong dipole-forbidden excitation.
Génévriez, M., Rosen, C., & Eichmann, U. (2022). Planetary states of the Sr atom. Annual Meeting of the Belgian Physical Society. https://hdl.handle.net/2078.5/214239