High l double-Rydberg states 7d5/2nl of barium

P. Camus , J.-M. Lecomte , C. Mahon , P. Pillet , L. Pruvost

The 7d5/2nl double-Rydberg states of barium have been studied for n=11 to 14 and l=7 to n-1 using the Isolated Core Excitation technique along with a Stark switching method to populate the high l states. The resulting spectra show resolved structures due to the correlation between the two excited electrons, identified by the (jl)K angular momentum coupling between them. The spectra are compared to energy positions and linewidths calculated using a perturbative approach, including the dipole and quadrupole interaction terms. The agreement between experiment and theory is very good for high l≥9, but less so for lower l.

Domaines: Articles anciens

P. Camus, J.-M. Lecomte, C. Mahon, P. Pillet, L. Pruvost. High l double-Rydberg states 7d5/2nl of barium. Journal de Physique II, 1992, 2 (4), pp.715-725. ⟨10.1051/jp2:1992161⟩. ⟨jpa-00247667⟩