highly energetic and/or highly charged ions up to naked uranium U 92+ and short-lived isotopes far off stability. Powerful accelerator devices such as the heavy-ion synchrotron and the experimental storage [...] be roughly split into the following topics: Spectroscopy of highly charged ions Dynamics and reactions of highly charged ions Determination of Ground state properties of atomic nuclei with atomic physics [...] the Atomic, Quantum & Fundamental Physics department at GSI is the ESR. In the ESR, highly-charged ions can be stored and investigated over a long period of time. Here, electron capture from an electron