Speaker
Description
A new SASE3 beamline branch at European XFEL in Schenefeld is currently being installed. It will be available to a large user community for time-resolved pump-probe photoelectron spectroscopy (TR-XPES) of solids and surfaces.
SASE3 provides ultra-short (10-100 fs), extremely intense (1 - 2 mJ) pulses of coherent soft X-ray light (0.27 - 3.0 keV photon energy), which is ideally suited for comprehensively investigating matter on the atomic length scale with femtosecond temporal resolution: Spin- and time-resolved ARPES will allow tracking the dynamics of electronic structures on the fundamental time scale of electronic motion. Time-resolved XPS and XPD will allow monitoring the temporal evolution of chemical processes and structural dynamics, respectively, in real time.
The X-ray beam can be varied in size at the sample position between 20 and 100 μm, matching the typical focal size of electron spectrometers. Two dedicated experimental stations have been developed, a spin-resolving photoelectron momentum microscope (University of Mainz) and a time-of-flight spectrometer (University of Hamburg). The new branch, however, was designed flexible as a “multi-purpose” branch, allowing users to bring their own transportable experimental stations and operate them with the FEL beam. The branch is expected to become operational at end of 2019.
