Mainz 2026 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 6: Attosecond Physics I (joint session A/MO)
A 6.1: Hauptvortrag
Montag, 2. März 2026, 17:00–17:30, N 1
Measurement of neon photoemission delays and double-core-hole Auger-Meitner lifetime using Angular Streaking — •Lars Funke1, Sara Savio1, Lasse Wülfing1, Niclas Wieland2, Markus Ilchen2, and Wolfram Helml1 — 1Fakultät Physik, Technische Universität Dortmund, Germany — 2Institut für Experimentalphysik, Universität Hamburg, Germany
The extreme brightness of X-ray free electron lasers allows probing non-linear processes in atoms and molecules in single-shot measurements. The addition of a temporal reference, e.g. through an Angular Streaking setup, enables the direct measurement of observables previously only accessible indirectly.
Here, we report on a European-XFEL measurement that simultaneously yields relative emission delays for multiple transitions triggered by 990 eV photons in neon. Specifically, we are able to clock 1s, 2s and 2p photoelectrons, single- and double-core-hole Auger-Meitner electrons at the same time, owing to a multi-resolution time-of-flight detector setup covering a broad electron energy range.
Keywords: angular streaking; xfel; neon; delays