2020/05/31 by Yuya Shinohara, Taito Osaka, Ichiro Inoue +5 · 27 citations
Physics and Astronomy · #Advanced X-ray Imaging Techniques #Crystallography and Radiation Phenomena #Dynamics (music) #Laser #Laser-Matter Interactions and Applications #Photon #Pulse (music) #Seeding #Speckle pattern #Spectroscopy #Ultrashort pulse #cond-mat.mtrl-sci #cond-mat.soft #physics.chem-ph #physics.optics
paper · pdf · doi:10.1038/s41467-020-20036-z
published in Nature Communications 11(1), 6213 (Nature Portfolio) · 22 pages, 5 figures
openalex created_date 2020/05/29 · openalex publication_date 2020/12/04 · arxiv created 2020/12/23 · arxiv updated 2020/12/24 · openalex updated_date 2026/08/05
With their brilliance and temporal structure, X-ray free-electron laser can unveil atomic-scale details of ultrafast phenomena. Recent progress in split-and-delay optics (SDO), which produces two X-ray pulses with time-delays, offers bright prospects for observing dynamics at the atomic-scale. However, their insufficient pulse energy has limited its application either to phenomena with longer correlation length or to measurement with a fixed delay-time. Here we show that the combination of the SDO and self-seeding of X-rays increases the pulse energy and makes it possible to observe the atomic-scale dynamics in a timescale of picoseconds. We show that the speckle contrast in scattering from water depends on the delay-time as expected. Our results demonstrate the capability of measurement using the SDO with seeded X-rays for resolving the dynamics in temporal and spatial scales that are not accessible by other techniques, opening opportunities for studying the atomic-level dynamics.