J. Murray-Krezan, J. Kelly, M.R. Kutteruf, and R.R. Jones
Abstract:Orbital dynamics in two-electron alkaline earth atoms in a static electric field are studied using scaled-energy recurrence spectroscopy. Photoabsorption spectra for Ba and Ca Rydberg atoms are measured as continuous functions of static electric field and energy. In both Ba and Ca the laser excitation proceeds through the singly-excited nd series which are strongly perturbed by doubly-excited valence configurations. Clear signatures of the two-electron dynamics associated with these perturbing configurations are identified.
Status: Physical Review A 75,013401 (2007).