We propose a scheme to directly laser cool Rydberg atoms by laser cooling the residual ion
core within the Rydberg-electron orbit. The scheme is detailed for alkaline-earth-metal …

Alkaline earth Rydberg atoms are very promising tools for quantum technologies. Their
highly excited outer electron provides them with the remarkable properties of Rydberg atoms …

The autoionization of core-excited Rydberg states is theoretically studied for a broad range
of principal and angular-momentum quantum numbers n and l in alkaline-earth-metal atoms …

We report a comprehensive experimental and theoretical study of the autoionization of core-
excited 5 p 1/2 n ℓ j strontium Rydberg states for intermediate values of ℓ j in the range 0≲ ℓ …

The structure and photoexcitation dynamics of high-lying doubly excited states of the
strontium atom with high angular momenta are studied in the vicinity of the Sr+(N= 5) …

We report a spectroscopic investigation of the 3 d δ Ω (Ω= 3 2, 5 2) Rydberg states of the
MgAr+ molecular cation. Vibrational levels of the 3 d δ 3/2 spin-orbit component with v≥ 15 …

We present an experimental and theoretical study of the structure and autoionization
dynamics of the (3 pjcndj) J= 1, 3 core-excited Rydberg states of Mg. Spectra were recorded …

We report on recent progress regarding the theoretical treatment of doubly-excited Rydberg
states of atoms with two valence electrons. Building upon state-of-the-art techniques, we …

We report on a new measurement of the A+ 2 Π Ω′= 1/2, 3/2← X+ 2 Σ+ electronic transition
of MgAr+. The experiment relied on the resonance-enhanced multiphoton dissociation of the …

In a combined experimental and theoretical study we investigate the 7 dnl and 8 pnl (n≥ 11,
l= 9–12) doubly excited planetary states of Sr. The experimental spectrum was obtained …