Mainz 2026 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 23: Poster – Interaction with Strong or Short Laser Pulses (joint session A/MO)
A 23.3: Poster
Mittwoch, 4. März 2026, 17:00–19:00, Philo 1. OG
Investigation of Interactions at relativistic laser intensities with Highly Charged Ions — •Stefan Ringleb1, Manuel Vogel2, Sugam Kumar3, Stefan Kiesel4, and Thomas Stöhlker1,2,4 — 1Friedrich-Schiller Universität Jena — 2GSI Helmholtzzentrum für Schwerionenforschung Darmstadt — 3Inter-University Accelerator Centre, New Delhi, India — 4Helmholtzinstitut Jena
Interaction of high-intensity lasers with highly charged ions is a widely explored field theoretically. In contrast, there is still a lack of experimental data on the interaction with highly charged ions, with most experiments to date focusing on high-intensity laser ionization of initially neutral gases. In our working HILITE setup, highly charged ions prepared for ion targets in a defined initial quantum state containing between 5,000 and 25,000 ions. We have elaborated techniques for ion-cloud preparation regarding fast ion cooling in axial direction and ion number. We have investigated the radial self arrangement of the ions to maximise the ion number in the laser volume. Currently, an experiment at the 200 TW femtosecond Laser system JETi200 is in operation to investigate the ionization dynamics at relativistic laser intensities. In the experiment, we will focus on hydrogen-like ions which can be described precisely by theory. This will also allow for the intensity determination in the laser focus, as this is the less accurate determined parameter in laser experiments. The setup is designed to enable experiments of laser-ion interaction with high accuracy and allow the test of laser-ionisation models for many-electron systems.
Keywords: laser ionisation; Penning trap; high intensity