66 citations · 511 across the 13 of their papers we have counts for
8 papers · 1 filter
Stringent test of QED with hydrogenlike tin
J. Morgner, B. Tu, C. M. König +11
Inner-shell electrons naturally sense the electric field close to the nucleus, which can reach extreme values beyond for the innermost electrons. Espe…
Transition strength measurements to guide magic wavelength selection in optically trapped molecules
K. H. Leung, I. Majewska, H. Bekker +5
Optical trapping of molecules with long coherence times is crucial for many protocols in quantum information and metrology. However, the factors that limit the lifetimes of the tra…
Detection of metastable electronic states by Penning trap mass spectrometry
Rima Xenia Schüssler, Hendrik Bekker, Martin Braß +19
State-of-the-art optical clocks achieve fractional precisions of and below using ensembles of atoms in optical lattices or individual ions in radio-frequency traps. Prom…
Electronic bridge excitation in highly charged Th-229 ions
Pavlo V. Bilous, Hendrik Bekker, Julian Berengut +6
The excitation of the 8 eV Th isomer through the electronic bridge mechanism in highly charged ions is investigated theoretically. By exploiting the rich level scheme of o…
Detection of the orbital crossing and its optical clock transition in Pr
H. Bekker, A. Borschevsky, Z. Harman +5
Recent theoretical works have proposed atomic clocks based on narrow optical transitions in highly charged ions. The most interesting candidates for searches of new physics are tho…
Extreme Ultraviolet Superfluorescence in Xenon and Krypton
L. Mercadier, A. Benediktovitch, C. Weninger +19
We present a comprehensive experimental and theoretical study on superfluorescence in the extreme ultraviolet wavelength regime. Focusing a high-intensity free-electron laser pulse…
Optical spectroscopy of complex open 4-shell ions Sn-Sn
F. Torretti, A. Windberger, A. Ryabtsev +8
We analyze the complex level structure of ions with many-valence-electron open [Kr] 4 sub-shells (=7-4) with ab initio calculations based on configuration…
Analysis of the fine structure of Sn ions by optical spectroscopy in an electron beam ion trap
A. Windberger, F. Torretti, A. Borschevsky +9
We experimentally re-evaluate the fine structure of Sn ions. These ions are essential in bright extreme-ultraviolet (EUV) plasma-light sources for next-generation nan…