Experimentalphysik IV

News

New publication in PRR

On 09.04.2026 our group published an article in Physical Review Research.

N. Golchert et al. "Influence of the ion charge state on emission energies of Auger electrons exemplified in Ar and Xe clusters", Phys. Rev. Research, 8, 023032 (2026).

DOI: https://doi.org/10.1103/8g56-ghtb

DPG Spring Conference 2026

In March 2026, a large part of our working group attended the spring meetings of the German Physical Society in Mainz (Atoms, Molecules, Quantum Optics and Photonics Section) and Dresden (Condensed Matter Section), to which they contributed a large number of presentation and poster contributions.

Beamtime at BESSY II

From 16.02. - 23.02.2026 Johannes Viehmann, Yusaku Terao, Julian Hertlein, Dana Bloß, Andreas Hans and Adrian Krone experimented at the U125-2_NIM beamline of the storage ring BESSY II in Berlin. They applied electron-photon coincidence spectroscopy to study non-local energy and charge transfer processes such as interatomic Coulombic decay (ICD) and interatomic radiative decay (IRD) in noble gas clusters.

New publication in Small

On 09.02.2026 our group published an article in small.

Y. Shubbak et al. "Separation of Magnetic Microparticles with Different Molecular Surface Functionalizations by Close-to-Surface Traveling-Wave Magnetophoresis", Small, e12290 (2026).

DOI: https://doi.org/10.1002/smll.202512290

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

Magnetophoretic long jump of magnetic microparticles in an engineered magnetic stray field landscape for highly localized and large throughput on-chip fractionation

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.

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

wecker[at]physik.uni-kassel[dot]de

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

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.

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