New dynamic diamond anvil cells for tera-pascal per second fast compression x-ray diffraction experiments
| Autor: | Mario Wendt, Zs. Jenei, E. F. O'Bannon, Wolfgang Morgenroth, Anna S. Pakhomova, Björn Winkler, Z. Konopkova, Sergej Wenz, A. Rothkirch, R. J. Husband, Hauke Marquardt, Alba San José Méndez, Hanns-Peter Liermann, K. Glazyrin, William J. Evans, David Pennicard, Michael Hanfland, Emma McBride |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Review of scientific instruments 90(6), 065114 (2019). doi:10.1063/1.5098993 |
| ISSN: | 1089-7623 |
| Popis: | Review of scientific instruments 90(6), 065114 (2019). doi:10.1063/1.5098993 Fast compression experiments performed using dynamic diamond anvil cells (dDACs) employing piezoactuators offer the opportunity to study compression-rate dependent phenomena. In this paper, we describe an experimental setup which allows us to perform time-resolved x-ray diffraction during the fast compression of materials using improved dDACs. The combination of the high flux available using a 25.6 keV x-ray beam focused with a linear array of compound refractive lenses and the two fast GaAs LAMBDA detectors available at the Extreme Conditions Beamline (P02.2) at PETRA III enables the collection of x-ray diffraction patterns at an effective repetition rate of up to 4 kHz. Compression rates of up to 160 TPa/s have been achieved during the compression of gold in a 2.5 ms fast compression using improved dDAC configurations with more powerful piezoactuators. The application of this setup to low-Z compounds at lower compression rates is described, and the high temporal resolution of the setup is demonstrated. The possibility of applying finely tuned pressure profiles opens opportunities for future research, such as using oscillations of the piezoactuator to mimic propagation of seismic waves in the Earth. Published by American Institute of Physics, College Park, MD |
| Databáze: | OpenAIRE |
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