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

EuXFEL Community Proposal 2592

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

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 (≤10 3  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 N 2 at 23 TPa s -1.

Original languageEnglish
Pages (from-to)671-685
Number of pages15
JournalJournal of Synchrotron Radiation
Volume30
Issue numberPt 4
Early online date15 Jun 2023
DOIs
Publication statusPublished - 1 Jul 2023

Keywords / Materials (for Non-textual outputs)

  • X-ray free-electron lasers
  • diamond anvil cells
  • dynamic compression
  • extreme conditions science

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