Scientific Opportunities with very Hard XFEL Radiation

Accuracy and limitations of XFEL structure determination inferred from X-ray pump X-ray probe studies

19 Jan 2023, 18:00

1h 30m

Canteen (DESY)

Poster High pressure, planetary, and geology science, electron dynamics, warm dense matter, relativistic laser plasmas, strong field science Poster Session

Speaker

Ichiro Inoue (RIKEN)

Description

Understanding intense XFEL interaction with matter is essential not only because of fundamental interest but also for interpreting experimental results. This presentation reviews recent experimental studies on intense x-ray interaction with matter using unique operation modes at SACLA (twin XFEL mode [1] and self-seeding mode [2]).
In particular, I will focus on XFEL-induced femtosecond structural and electronic changes in crystalline materials [3-6] revealed by X-ray pump X-ray probe techniques. Based on the experimental results, I will discuss the accuracy and limitations of structure determination with intense XFEL pulses.
[1] T. Hara et al., Nature Commun. 4, 2919 (2013).
[2] I. Inoue et al., Nature Photon. 13, 319 (2019).
[3] I. Inoue et al., PNAS 113, 1492 (2016).
[4] I. Inoue et al., PRL 126, 117403 (2021).
[5] I. Inoue et al., PRL 128, 223204 (2022).
[6] I. Inoue, J. Yamada, B. Ziaja et al., in preparation.