HITRAP Facility and Experiments - Status and Future Perspectives

In electron-electron interactions in electromagnetic systems, retardation in the exchange of a virtual photon is essentially important as the first-order quantum electrodynamics correction. However, the retardation effect is generally so small that it is buried in unretarded electric and magnetic interactions and thus has yet to be directly probed. Here, we present a giant contribution of the...

While the study of the dynamics in scattering reactions between ions and atoms or molecules is a research field with a very long tradition, there are still many interesting and new aspects that are presently investigated. As compared to other projectile species such as electrons or photons, ions are particularly attractive because the allow to generate the shortest (down to zeptoseconds) and...

Helium-like ions are the simplest atomic multibody systems and their study along the isoelectronic sequence provides a unique testing ground for the interplay of the effects of electron–electron correlation, relativity and quantum electrodynamics. However, for high-Z ions with nuclear charge Z > 54, where inner-shell transition energies reach up to 100 keV, there is currently no data available...

When coming close to an atom, a muon can be captured by the nucleus and form a hydrogen-like
muonic ion, which is typically also surrounded by atomic electrons. This atomic system is commonly
referred to as a muonic atom. Due to the muon’s high mass, it is located much closer to the nucleus;
and, especially for heavy nuclei, this results in big nuclear size effects and a strong dependence...