Demonstration of an x-ray Raman spectroscopy setup to study warm dense carbon at the high energy density instrument of European XFEL

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • K. Voigt - , Professur für Anorganisch-Nichtmetallische Werkstoffe (gB/FG), Helmholtz-Zentrum Dresden-Rossendorf, Technische Universität Dresden (Autor:in)
  • M. Zhang - , Helmholtz-Zentrum Dresden-Rossendorf, Anhui University (Autor:in)
  • K. Ramakrishna - , Professur für Strahlenphysik (gB/HZDR), Helmholtz-Zentrum Dresden-Rossendorf, Technische Universität Dresden, Center for Advanced Systems Understanding (CASUS) (Autor:in)
  • A. Amouretti - , Sorbonne Université (Autor:in)
  • K. Appel - , European XFEL (Autor:in)
  • E. Brambrink - , European XFEL (Autor:in)
  • V. Cerantola - , European XFEL (Autor:in)
  • D. Chekrygina - , Rutherford Appleton Laboratory (Autor:in)
  • T. Döppner - , Lawrence Livermore National Laboratory (Autor:in)
  • R. W. Falcone - , University of California at Berkeley (Autor:in)
  • K. Falk - , Professur für Statik und Dynamik der Tragwerke, Helmholtz-Zentrum Dresden-Rossendorf, Technische Universität Dresden, Czech Academy of Sciences (Autor:in)
  • L. B. Fletcher - , Helmholtz-Zentrum Dresden-Rossendorf, Stanford Linear Accelerator Center (SLAC) (Autor:in)
  • D. O. Gericke - , Helmholtz-Zentrum Dresden-Rossendorf, University of Warwick (Autor:in)
  • S. Göde - , European XFEL (Autor:in)
  • M. Harmand - , Sorbonne Université (Autor:in)
  • N. J. Hartley - , Helmholtz-Zentrum Dresden-Rossendorf, Stanford Linear Accelerator Center (SLAC) (Autor:in)
  • S. P. Hau-Riege - , Lawrence Livermore National Laboratory (Autor:in)
  • L. G. Huang - , Helmholtz-Zentrum Dresden-Rossendorf (Autor:in)
  • O. S. Humphries - , Helmholtz-Zentrum Dresden-Rossendorf (Autor:in)
  • M. Lokamani - , Helmholtz-Zentrum Dresden-Rossendorf (Autor:in)
  • M. Makita - , European XFEL (Autor:in)
  • A. Pelka - , Helmholtz-Zentrum Dresden-Rossendorf (Autor:in)
  • C. Prescher - , Helmholtz-Zentrum Dresden-Rossendorf, Deutsches Elektronen-Synchrotron (DESY) (Autor:in)
  • A. K. Schuster - , Professur für Strahlenphysik (gB/HZDR), Helmholtz-Zentrum Dresden-Rossendorf, Technische Universität Dresden (Autor:in)
  • M. Šmíd - , Helmholtz-Zentrum Dresden-Rossendorf (Autor:in)
  • T. Toncian - , Helmholtz-Zentrum Dresden-Rossendorf (Autor:in)
  • J. Vorberger - , Helmholtz-Zentrum Dresden-Rossendorf (Autor:in)
  • U. Zastrau - , European XFEL (Autor:in)
  • T. R. Preston - , European XFEL (Autor:in)
  • D. Kraus - , Helmholtz-Zentrum Dresden-Rossendorf, Universität Rostock (Autor:in)

Abstract

We present a proof-of-principle study demonstrating x-ray Raman Spectroscopy (XRS) from carbon samples at ambient conditions in conjunction with other common diagnostics to study warm dense matter, performed at the high energy density scientific instrument of the European x-ray Free Electron Laser (European XFEL). We obtain sufficient spectral resolution to identify the local structure and chemical bonding of diamond and graphite samples, using highly annealed pyrolytic graphite spectrometers. Due to the high crystal reflectivity and XFEL brightness, we obtain signal strengths that will enable accurate XRS measurements in upcoming pump-probe experiments with a high repetition-rate, where the samples will be pumped with high-power lasers. Molecular dynamics simulations based on density functional theory together with XRS simulations demonstrate the potential of this technique and show predictions for high-energy-density conditions. Our setup allows simultaneous implementation of several different diagnostic methods to reduce ambiguities in the analysis of the experimental results, which, for warm dense matter, often relies on simplifying model assumptions. The promising capabilities demonstrated here provide unprecedented insights into chemical and structural dynamics in warm dense matter states of light elements, including conditions similar to the interiors of planets, low-mass stars, and other celestial bodies.

Details

OriginalspracheEnglisch
Aufsatznummer082701
FachzeitschriftPhysics of plasmas
Jahrgang28
Ausgabenummer8
PublikationsstatusVeröffentlicht - 1 Aug. 2021
Peer-Review-StatusJa

Schlagworte

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