41 citations · 131 across the 6 of their papers we have counts for
6 papers
Narrow and ultra-narrow transitions in highly charged Xe ions as probes of fifth forces
Nils-Holger Rehbehn, Michael K. Rosner, Julian C. Berengut +4
Optical frequency metrology in atoms and ions can probe hypothetical fifth-forces between electrons and neutrons by sensing minute perturbations of the electronic wave function ind…
A Highly Drift-stable Atomic Magnetometer for Fundamental Physics Experiments
M. Rosner, D. Beck, P. Fierlinger +7
We report the design and performance of a non-magnetic drift stable optically pumped cesium magnetometer with a measured sensitivity of 35 fT at 200 s integration time and stabilit…
Sensitivity to New Physics of Isotope Shift Studies using the Coronal Lines of Highly Charged Calcium Ions
Nils-Holger Rehbehn, Michael K. Rosner, Hendrik Bekker +8
Promising searches for new physics beyond the current Standard Model (SM) of particle physics are feasible through isotope-shift spectroscopy, which is sensitive to a hypothetical…
An ultralow-noise superconducting radio-frequency ion trap for frequency metrology with highly charged ions
J. Stark, C. Warnecke, S. Bogen +17
We present a novel ultrastable superconducting radio-frequency (RF) ion trap realized as a combination of an RF cavity and a linear Paul trap. Its RF quadrupole mode at 34.52 MHz r…
Observation of strong two-electron--one-photon transitions in few-electron ion
Moto Togawa, Steffen Kühn, Chintan Shah +22
We resonantly excite the series of O and O up to principal quantum number with monochromatic x rays, producing -shell holes, and observe their relaxatio…
High Resolution Photoexcitation Measurements Exacerbate the Long-Standing Fe XVII Oscillator Strength Problem
Steffen Kühn, Chintan Shah, José R. Crespo López-Urrutia +29
For more than 40 years, most astrophysical observations and laboratory studies of two key soft x-ray diagnostic transitions, and , in Fe XVII ions found oscillator…