Recent developments in frequency metrology and optical clocks have been based on
electronic transitions in atoms and singly charged ions as references. The control over all …

Storage rings have been employed over three decades in various kinds of nuclear and
atomic physics experiments with highly charged ions. Storage ring operation and precision …

The last decade has seen unprecedented effort in dark matter model building at all mass
scales coupled with the design of numerous new detection strategies. Transformative …

Inner-shell electrons naturally sense the electric field close to the nucleus, which can reach
extreme values beyond 1015 V cm− 1 for the innermost electrons. Especially in few-electron …

Helium-3 has nowadays become one of the most important candidates for studies in
fundamental physics,–, nuclear and atomic structure,, magnetometry and metrology, as well …

Many powerful tests of the standard model of particle physics and searches for new physics
with precision atomic spectroscopy are hindered by our lack of knowledge of nuclear …

Abstract The Gamma Factory (GF) is an ambitious proposal, currently explored within the
CERN Physics Beyond Colliders program, for a source of photons with energies up to≈ 400 …

The current status of bound state quantum electrodynamics calculations of transition
energies for few-electron ions is reviewed. Evaluation of one and two body QED correction …

The ALPHATRAP experiment at the Max-Planck Institute for Nuclear Physics in Heidelberg
aims at probing the validity of quantum electrodynamics in extremely strong electromagnetic …

The finite distribution of the nuclear magnetic moment across the nucleus gives a
contribution to the hyperfine structure known as the Bohr-Weisskopf (BW) effect. We have …