Experimentalphysik IV

News

Beamtime at ILL

Group picture.

From September 25 - 30, 2025, Florian Ott, Jonas Bugase and Arne Vereijken conducted experiments at the neutron reflectometer D17 at the nuclear power plant of the Institute Laue Langevin (ILL) in Grenoble, the French "capital of the Alps". Domain walls of artificial magnetic domain patterns were investigated.

Disputation by Lutz Marder

On 20.10.2025 Lutz Marder successfully defended his dissertation entitled Decay Cascades of Inner-Shell Vacancies in Rare-Gas Clusters.

Congratulations!

Beamtime at MAX IV in Sweden

Group picture.

From October 11 - 21, 2025, Yusaku Terao, Dana Bloß, Andreas Hans, Adrian Krone, Gabriel Klassen and Niklas Golchert together with our external colleagues Rémi Dupuy, Ouassim Hocine Hafiani, Markus Marracci and Iain Wilkinson performed experiments at the FlexPES beamline of the MAX IV synchrotron in Sweden. They investigated local Auger cascades in anions in the liquid phase.

Group retreat 2025

Our annual group excursion took place from 30.09.-02.10.2025. The purpose of this event was both the informal exchange on scientific topics and strengthening the team spirit within the group.

Click here to read more about recent events in the AG Ehresmann.

Link to "News" page: Read More

Current research highlights

Combined Funnel, Concentrator, and Particle Valve Functional Element for Magnetophoretic Bead Transport Based on Engineered Magnetic Domain Patterns

Theses

Information about possible topics for your bachelor's / master's thesis, your state examination or your PhD in the group of A. Ehresmann and experience reports from graduates can be found here.

Theses: Further Information

Secretariat

Andrea Wecker

Heinr.-Plett-Straße 40
34132 Kassel
Room 1265

Telefone: +49 561 804-4061

Consultation hour:
Tuesday-Thursday 9:30-16:30
Monday and Friday: upon arrangement

Interplay of protection and damage through intermolecular processes in the decay of electronic core holes in microsolvated organic molecules

D. Bloß et al. Phys. Chem. Chem. Phys., 27, 9329-9335 (2025).
DOI: https://doi.org/10.1039/D4CP03907F

Interplay of protection and damage through intermolecular processes in the decay of electronic core holes in microsolvated organic molecules: Read More

Experimental realization of Auger decay in the field of a positive elementary charge

A. Hans et al., "Experimental realization of Auger decay in the field of a positive elementary charge", Physical Review Letters 132, 20 (2024).
DOI: 10.1103/PhysRevLett.132.203002

Older research highlights

You can find older research highlights here.

Older research highlights: Forward