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A: Fachverband Atomphysik
A 15: Poster – Highly Charged Ions and their Applications
A 15.6: Poster
Dienstag, 3. März 2026, 17:00–19:00, Philo 1. OG
Laser spectroscopy of highly charged ions in SpecTrap — •Rima X. Schüssler1,2,3, Manuel Vogel1, Volker Hannen4, Wilfried Nörtershäuser5, Gerhard Birkl5, Andreas Solders6, and Thomas Stöhlker1,2,3 — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt — 2Helmholtz Institute Jena — 3Friedrich Schiller Universität Jena — 4Universität Münster — 5Universität Darmstadt — 6Uppsala Universitet
Heavy, highly charged ions (HCI) provide a unique possibility to test fundamental physics in the presence of extreme electromagnetic fields. To this end, the SpecTrap experiment, located at the HITRAP facility of the GSI Helmholtz Centre for Heavy Ion Research, plans to perform laser spectroscopy of (hyper-)fine structure transitions in HCIs in a Penning trap. Measurements will include the test of bound-state quantum electrodynamics as well as the nuclear clock transition in 229Th89+ in the framework of the HiThor project.
The HCIs are produced in the accelerators of GSI and then decelerated by the HITRAP facility, before being guided to the cryogenic Penning trap. Within the trap, they are sympathetically cooled down with Mg+ ions. The trap has optical access for lasers as well as to collect fluorescence of the HCIs.
Keywords: Fundamental Physics; Penning trap; Nuclear Clock; Quantum Electrodynamics