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Spiekermann, Georg; Kupenko, Ilya; Petitgirard, Sylvain; Harder, Manuel; Nyrow, Alexander; Weis, Christopher; Albers, Christian; Biedermann, Nicole; Libon, Lélia; Sahle, Christoph J.; Cerantola, Valerio; Glazyrin, Konstantin; Konôpková, Zuzana; Sinmyo, Ryosuke; Morgenroth, Wolfgang; Sergueev, Ilya; Yavaş, Hasan; Dubrovinsky, Leonid; Tolan, Metin; Sternemann, Christian; Wilke, Max

A portable on-axis laser-heating system for near-90° X-ray spectroscopy: application to ferropericlase and iron silicide

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  • Medientyp: E-Artikel
  • Titel: A portable on-axis laser-heating system for near-90° X-ray spectroscopy: application to ferropericlase and iron silicide
  • Beteiligte: Spiekermann, Georg; Kupenko, Ilya; Petitgirard, Sylvain; Harder, Manuel; Nyrow, Alexander; Weis, Christopher; Albers, Christian; Biedermann, Nicole; Libon, Lélia; Sahle, Christoph J.; Cerantola, Valerio; Glazyrin, Konstantin; Konôpková, Zuzana; Sinmyo, Ryosuke; Morgenroth, Wolfgang; Sergueev, Ilya; Yavaş, Hasan; Dubrovinsky, Leonid; Tolan, Metin; Sternemann, Christian; Wilke, Max
  • Erschienen: International Union of Crystallography (IUCr), 2020
  • Erschienen in: Journal of Synchrotron Radiation
  • Sprache: Nicht zu entscheiden
  • DOI: 10.1107/s1600577519017041
  • ISSN: 1600-5775
  • Schlagwörter: Instrumentation ; Nuclear and High Energy Physics ; Radiation
  • Entstehung:
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  • Beschreibung: <jats:p>A portable IR fiber laser-heating system, optimized for X-ray emission spectroscopy (XES) and nuclear inelastic scattering (NIS) spectroscopy with signal collection through the radial opening of diamond anvil cells near 90°with respect to the incident X-ray beam, is presented. The system offers double-sided on-axis heating by a single laser source and zero attenuation of incoming X-rays other than by the high-pressure environment. A description of the system, which has been tested for pressures above 100 GPa and temperatures up to 3000 K, is given. The XES spectra of laser-heated Mg<jats:sub>0.67</jats:sub>Fe<jats:sub>0.33</jats:sub>O demonstrate the potential to map the iron spin state in the pressure–temperature range of the Earth's lower mantle, and the NIS spectra of laser-heated FeSi give access to the sound velocity of this candidate of a phase inside the Earth's core. This portable system represents one of the few bridges across the gap between laser heating and high-resolution X-ray spectroscopies with signal collection near 90°.</jats:p>