66 citations · 511 across the 13 of their papers we have counts for
13 papers
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…
What can a GNOME do? Search targets for the Global Network of Optical Magnetometers for Exotic physics searches
S. Afach, D. Aybas Tumturk, H. Bekker +50
Numerous observations suggest that there exist undiscovered beyond-the-Standard-Model particles and fields. Because of their unknown nature, these exotic particles and fields could…
Excitation and probing of low-energy nuclear states at high-energy storage rings
Junlan Jin, Hendrik Bekker, Tobias Kirschbaum +6
Th with a low-lying nuclear isomeric state is an essential candidate for a nuclear clock as well as many other applications. Laser excitation of the isomeric state has been…
Spectral signatures of axionlike dark matter
Alexander V. Gramolin, Arne Wickenbrock, Deniz Aybas +6
We derive spectral line shapes of the expected signal for a haloscope experiment searching for axionlike dark matter. The knowledge of these line shapes is needed to optimize an ex…
Quantum sensitivity limits of nuclear magnetic resonance experiments searching for new fundamental physics
Deniz Aybas, Hendrik Bekker, John W. Blanchard +7
Nuclear magnetic resonance is a promising experimental approach to search for ultra-light axion-like dark matter. Searches such as the cosmic axion spin-precession experiments (CAS…
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…
First Test of Lorentz Invariance in the Weak Decay of Polarized Nuclei
S. E. Müller, E. A. Dijck, H. Bekker +17
A new test of Lorentz invariance in the weak interactions has been made by searching for variations in the decay rate of spin-polarized 20Na nuclei. This test is unique to Gamow-Te…