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Pair Distribution Function from Liquid Jet Nanoparticle Suspension using Femtosecond X-ray Pulses |
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| Authors: | Lise Joost Støckler Rasmus Stubkjær Christensen Magnus Kløve Andreas Dueholm Bertelsen Anders Bæk Borup Prof. Dr. Lennard Krause Seiya Takahashi Dr. Tomoki Fujita Prof. Dr. Hidetaka Kasai Dr. Ichiro Inoue Prof. Dr. Eiji Nishibori Prof. Dr. Dr. Dr. Bo Brummerstedt Iversen |
| Affiliation: | 1. Center for Integrated Materials Research, Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus, 8000 Denmark;2. Department of Physics, Faculty of Pure and Applied Sciences and TREMS, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki, 305-8571 Japan;3. RIKEN SPring-8 Center, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5148 Japan |
| Abstract: | X-ray scattering data measured on femtosecond timescales at the SACLA X-ray Free Electron Laser (XFEL) facility on a suspension of HfO2 nanoparticles in a liquid jet were used for pair distribution function (PDF) analysis. Despite a non-optimal experimental setup resulting in a modest Qmax of ~8 Å−1, a promising PDF was obtained. The main features were reproduced when comparing the XFEL PDF to a PDF obtained from data measured at the PETRA III synchrotron light source. Refining structural parameters such as unit cell dimension and particle size from the XFEL PDF provided reliable values. Although the reachable Qmax limited the obtainable information, the present results indicate that good quality PDFs can be obtained on femtosecond timescales if the experimental conditions are further optimized. The study therefore encourages a new direction in ultrafast structural science where structural features of amorphous and disordered systems can be studied. |
| Keywords: | femtosecond studies nanoparticle nucleation pair distribution function structural dynamics X-ray free electron laser |