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

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. open access.

Citation

Rachel J Husband, Cornelius Strohm, Karen Appel, Orianna B Ball, Richard Briggs, Johannes Buchen, Valerio Cerantola, Stella Chariton, Amy L Coleman, Hyunchae Cynn, Dana Dattelbaum, Anand Dwivedi, Jon H Eggert, Lars Ehm, William J Evans, Konstantin Glazyrin, Alexander F Goncharov, Heinz Graafsma, Alex Howard, Larissa Huston, Trevor M Hutchinson, Huijeong Hwang, Sony Jacob, Johannes Kaa, Jaeyong Kim, Minseob Kim, Egor Koemets, Zuzana Konôpková, Falko Langenhorst, Torsten Laurus, Xinyang Li, Jona Mainberger, Hauke Marquardt, Emma E McBride, Christopher McGuire, James D McHardy, Malcolm I McMahon, R Stewart McWilliams, Alba S J Méndez, Anshuman Mondal, Guillaume Morard, Earl F O'Bannon, Christoph Otzen, Charles M Pépin, Vitali B Prakapenka, Clemens Prescher, Thomas R Preston, Ronald Redmer, Michael Roeper, Carmen Sanchez-Valle, Dean Smith, Raymond F Smith, Daniel Sneed, Sergio Speziale, Tobias Spitzbart, Stephan Stern, Blake T Sturtevant, Jolanta Sztuk-Dambietz, Peter Talkovski, Nenad Velisavljevic, Cara Vennari, Zhongyan Wu, Choong Shik Yoo, Ulf Zastrau, Zsolt Jenei, Hanns Peter Liermann. A MHz X-ray diffraction set-up for dynamic compression experiments in the diamond anvil cell. Journal of synchrotron radiation. 2023 Jul 01;30(Pt 4):671-685

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PMID: 37318367

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