Published in

International Union of Crystallography, Journal of Synchrotron Radiation, 4(30), p. 671-685, 2023

DOI: 10.1107/s1600577523003910

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A MHz X-ray diffraction set-up for dynamic compression experiments in the diamond anvil cell

Journal article published in 2023 by Rachel J. Husband, Cornelius Strohm, Karen Appel ORCID, Orianna B. Ball, Richard Briggs ORCID, Johannes Buchen ORCID, Valerio Cerantola ORCID, Stella Chariton ORCID, Amy L. Coleman ORCID, Hyunchae Cynn, Dana Dattelbaum, Anand Dwivedi, Jon H. Eggert, Lars Ehm ORCID, William J. Evans and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

An experimental platform for dynamic diamond anvil cell (dDAC) research has been developed at the High Energy Density (HED) Instrument at the European X-ray Free Electron Laser (European XFEL). Advantage was taken of the high repetition rate of the European XFEL (up to 4.5 MHz) to collect pulse-resolved MHz X-ray diffraction data from samples as they are dynamically compressed at intermediate strain rates (≤103 s−1), where up to 352 diffraction images can be collected from a single pulse train. The set-up employs piezo-driven dDACs capable of compressing samples in ≥340 µs, compatible with the maximum length of the pulse train (550 µs). Results from rapid compression experiments on a wide range of sample systems with different X-ray scattering powers are presented. A maximum compression rate of 87 TPa s−1 was observed during the fast compression of Au, while a strain rate of ∼1100 s−1 was achieved during the rapid compression of N2 at 23 TPa s−1.