Journal Article

PUBDB-2025-01365

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png High-intensity X-ray pump-monochromatic X-ray probe technique across time zero

Inoue, I. (Corresponding author)Extern*XFEL.EU* ; Osaka, T.Extern* ; Tkachenko, V.XFEL.EU*DESY* ; Hara, T. ; Kapcia, K. J. ; Inubushi, Y.Extern* ; Kawaguchi, S. ; Yamada, J. ; Nishibori, E.Extern* ; Yabashi, M. ; Ziaja, B.CFEL*XFEL.EU*DESY*

2025
Optica Washington, DC

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Please use a persistent id in citations: doi:10.1364/OPTICA.555433

Abstract: A femtosecond pump–probe technique, capable of probing transient changes in intense X-ray-excited matter with monochromatic X-ray pulses and accessing data for both positive and negative delay times, is proposed. The application of this technique to single-crystal silicon revealed ultrafast X-ray-induced electron excitation occurring on a timescale of 10 fs, along with the delayed onset of atomic disordering relative to the electronic excitation. This technique will pave the way for atom-specific multidimensional spectroscopy and diagnostics of exotic states of matter created by X-ray irradiation with sophisticated probing techniques, such as single-crystal diffraction, inelastic scattering, X-ray Thomson scattering, and absorption spectroscopy.

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Contributing Institute(s):

1. Gruppe CFEL-XM (FS-CFEL-XM)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2025

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