Aarhus Universitets segl

Department of Chemistry Seminar Series: Christian Bressler, European XFEL and Universität Hamburg (Vært: Shuai Wei)

Femtosecond X-Ray Experiments at European XFEL: Understanding Molecular Reactivity

Oplysninger om arrangementet


Torsdag 16. november 2023,  kl. 15:00 - 16:00


1514-213, Aud I, Institut for Kemi, Langelandsgade 140

15:00-15:15       Coffee & cake in the foyer
15:15-16:00       Scientific talk in Auditorium I

Speaker: Christian Bressler, European XFEL and Universität Hamburg


Time-resolved x-ray tools allow measuring electronic and geometric structure changes. X-Ray emission spectroscopy is sensitive to electronic changes, such as oxidation and spin states, while x-ray absorption fine structure tools deliver information about the local geometric structure around the selected absorbing atom. Combining these tools with forward scattering in one single setup allows extracting simultaneous information about the local to rather global structural changes occurring in the reacting system.

In this talk I will present some case examples, for which pico- and femtosecond x-ray experiments deliver new insight into evolving dynamic processes, including reactive high-valent iron compounds and our efforts to deliver new observables to study solvation dynamics of reacting species. This will be accompanied by an introduction about the information content of x-ray tools. All these tools have been combined into one single experimental setup at European XFEL, its Femtosecond X-Ray Experiments (FXE) Instrument. If time allows, a short introduction to a new virtual tool showcasing all these capabilities will be given.