1. Novel experimental setup for megahertz X‐ray diffraction in a diamond anvil cell at the High Energy Density (HED) instrument of the European X‐ray Free‐Electron Laser (EuXFEL)
- Author
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Liermann, HP, Konôpková, Z, Appel, K, Prescher, C, Schropp, A, Cerantola, V, Husband, RJ, McHardy, JD, McMahon, MI, McWilliams, RS, Pépin, CM, Mainberger, J, Roeper, M, Berghäuser, A, Damker, H, Talkovski, P, Foese, M, Kujala, N, Ball, OB, Baron, MA, Briggs, R, Bykov, M, Bykova, E, Chantel, J, Coleman, AL, Cynn, H, Dattelbaum, D, Dresselhaus-Marais, LE, Eggert, JH, Ehm, L, Evans, WJ, Fiquet, G, Frost, M, Glazyrin, K, Goncharov, AF, Hwang, H, Jenei, Zs, Kim, J-Y, Langenhorst, F, Lee, Y, Makita, M, Marquardt, H, McBride, EE, Merkel, S, Morard, G, O'Bannon, EF, Otzen, C, Pace, EJ, Pelka, A, Pigott, JS, Prakapenka, VB, Redmer, R, Sanchez-Valle, C, Schoelmerich, M, Speziale, S, Spiekermann, G, Sturtevant, BT, Toleikis, S, Velisavljevic, N, Wilke, M, Yoo, C-S, Baehtz, C, Zastrau, U, and Strohm, C
- Subjects
diamond anvil cells ,X-ray free-electron lasers ,high-precision X-ray diffraction ,finite element modeling ,Condensed Matter Physics ,Optical Physics ,Physical Chemistry (incl. Structural) ,Biophysics - Abstract
The high-precision X-ray diffraction setup for work with diamond anvil cells (DACs) in interaction chamber 2 (IC2) of the High Energy Density instrument of the European X-ray Free-Electron Laser is described. This includes beamline optics, sample positioning and detector systems located in the multipurpose vacuum chamber. Concepts for pump-probe X-ray diffraction experiments in the DAC are described and their implementation demonstrated during the First User Community Assisted Commissioning experiment. X-ray heating and diffraction of Bi under pressure, obtained using 20 fs X-ray pulses at 17.8 keV and 2.2 MHz repetition, is illustrated through splitting of diffraction peaks, and interpreted employing finite element modeling of the sample chamber in the DAC.
- Published
- 2021