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MS: Fachverband Massenspektrometrie
MS 5: Poster
MS 5.6: Poster
Mittwoch, 4. März 2026, 17:00–19:00, Philo 1. OG
High-precision Penning trap mass spectrometry of heavy, highly charged ions — •Rima X. Schüssler1,2,3 and Thomas Stöhlker1,2,3 — 1GSI Helmholtz Center for Heavy Ion Research, Darmstadt — 2Helmholtzinstitut Jena — 3Institute of Optics and Quantum Electronics, Friedrich Schiller University Jena
The theory of quantum electrodynamics (QED) has been extensively tested in light or medium heavy atoms, but stringent tests in the heaviest atoms in the highest charge states, where QED effects are largest, still lack high precision. So far, such measurements have been performed in storage rings at high ion energies.
To this end, we are setting up a high-precision Penning trap mass spectrometer to perform measurements of the binding energy of the innermost electron by determining the mass difference with a relative precision of 10−12 of ions in different charge states. The experiment will be situated at the Hitrap facility at the GSI Helmholtz Center for Heavy Ion Research in Darmstadt. Here, heavy, highly charged ions are produced in the accelerator facility and then decelerated such that they can be captured in the Penning trap. The experiment itself will consist of a strong magnetic field, feature several cryogenic Penning traps, and a cryogenic detection system with single-ion efficiency.
Furthermore, due to the nature of a Penning trap, the experiment will extend the application of mass measurements to the region of the heaviest ions in the highest charge states for a vast range of applications.
Keywords: Penning trap; Heavy, highly charged ions; Quantum electrodynamics; Fundamental Physics