Dresden 2020 – scientific programme
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MA: Fachverband Magnetismus
MA 48: Ultrafast Electron Dynamics III (joint session O/MA)
MA 48.9: Talk
Thursday, March 19, 2020, 12:30–12:45, WIL B321
Three time-resolved photoelectron spectroscopies in one setup - time-of-flight momentum microscope at free electron laser. — •D. Kutnyakhov1, R.P. Xian2, M. Dendzik2, M. Heber1, F. Pressacco3, S.Y. Agustsson4, L. Wenthaus1, H. Meyer3, S. Gieschen3, K. Bühlman5, S. Däster5, R. Gort5, D. Curcio6, K. Volckaert6, M. Bianchi6, Ch. Sanders6, J.A. Miwa6, S. Ulstrup6, A. Oelsner7, C. Tusche8,9, Y.-J. Chen8,9, D. Vasilyev4, K. Medjanik4, G. Brenner1, S. Dziarzhytski1, S. Dong2, J. Hauer2, L. Rettig2, J. Demsar4, K. Rossnagel1,10, H.-J. Elmers4, Ph. Hofmann6, R. Ernstorfer2, G. Schönhense4, Y. Acremann5, and W. Wurth1,3 — 1DESY, Hamburg — 2FHI Berlin — 3CFEL, Univ. Hamburg — 4Univ. Mainz — 5ETH Zürich — 6Univ. Aarhus — 7Surface Concept GmbH, Mainz — 8FZ Jülich GmbH — 9Univ. Duisburg-Essen — 10IEAP, CAU Kiel
Time-resolved photoemission with ultrafast pump and probe pulses is an emerging technique with wide application potential. Combining valence-band and core-level spectroscopy with photoelectron diffraction in a single efficient photoelectron-detection setup for electronic, chemical and structural analysis requires soft X-ray pulses (width few 10 fs) with some 10 meV spectral resolution. This is feasible at high repetition rate free-electron lasers using parallel imaging with segmented single-shot detectors with increased multi-hit capabilities. We have constructed and optimized a versatile setup commissioned at FLASH/PG2 that combines free-electron-laser capabilities with a multidimensional recording scheme for photoemission studies.