Split-pulse X-ray photon correlation spectroscopy with seeded X-rays from X-ray laser to study atomic-level dynamics
| Autor: | Shinohara, Yuya, Osaka, Taito, Inoue, Ichiro, Iwashita, Takuya, Dmowski, Wojciech, Ryu, Chae Woo, Sarathchandran, Yadu, Egami, Takeshi |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Nature Communications 11, 6213 (2020) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/s41467-020-20036-z |
| Popis: | 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. Comment: 22 pages, 5 figures |
| Databáze: | arXiv |
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