Ph.D. Theses

The electric field experienced by bound electrons in highly charged ions ranks among the strongest available to experimental studies. For moderate atomic numbers, the electric field in hydrogen-like ions is equivalent to current laser systems. [...]

Transverse excitation is a key method required for the operation of synchrotrons, a type of circular particle accelerator suitable for a wide range of applications. The excitation is essential to control the beam: First, it is used in the context of beam diagnostics to enable monitoring of the accelerator's working point (tune). [...]

The excess of matter over antimatter in the known part of the Universe cannot be explained by the Standard Model of particle physics. Mechanisms that violate CP symmetry exist in the Standard Model and can be used to explain the excess of matter over antimatter. [...]

The GSI Helmholtzzentrum für Schwerionenforschung GmbH (GSI) in Darmstadt is a large-scale facility for basic research on and with highly charged ions in various physics fields, such as atomic and quantum physics. The amount of beamtime requested for experiments at the GSI accelerator complex significantly exceeds the amount available. [...]

Dielectronic recombination (DR) is the resonant capture of a free electron by an ion. It is a fundamental process in determining the charge-state balance of low-temperature plasma environments, which can be found in a wide range of astrophysical objects such as planetary nebulae, active galactic nuclei and supernova remnants. [...]