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FM: Fachverband Funktionsmaterialien

FM 11: Poster Session Functional Materials

FM 11.38: Poster

Dienstag, 10. März 2026, 18:00–20:30, P4

Soft X-ray Spectroscopy at the HESEB Beamline, SESAME — •Ahlam Farhan — SESAME, Allan, Jordan

The ID11-L Helmholtz-SESAME Soft X-ray Beamline (HESEB) represents a significant step forward in soft X-ray research infrastructure in the Middle East. Operating in the 70-2000 eV energy range, HESEB provides photon fluxes between 10-3404 Giga photons/s, with an energy resolution exceeding E/ΔE > 8000. The beamline delivers a focused spot size of 500*250μm and offers tunable circular polarisation, enabling precise investigations of the electronic and magnetic properties of a wide range of materials.

The X-ray absorption spectroscopy (XAS) end station is equipped with a motorised manipulator, magnetic sample holders, and a differential pumping system, allowing measurements under ambient conditions or in a helium atmosphere. This flexibility supports the study of vacuum-sensitive materials, including valuable cultural heritage samples.

Recent XAS and XMCD measurements demonstrate HESEB's excellent stability, high resolution, and precise polarisation control, establishing it as a versatile platform for soft X-ray spectroscopy and magnetic materials research at SESAME.

Keywords: Soft X-ray beamline; X-ray absorption spectroscopy (XAS); X-ray magnetic circular dichroism (XMCD); SESAME synchrotron