%0 Journal Article
%A Spiekermann, Georg
%A Kupenko, Ilya
%A Petitgirard, Sylvain
%A Harder, Manuel
%A Nyrow, Alexander
%A Weis, Christopher
%A Albers, Christian
%A Biedermann, Nicole
%A Libon, Lélia
%A Sahle, Christoph J.
%A Cerantola, Valerio
%A Glazyrin, Konstantin
%A Konôpková, Zuzana
%A Sinmyo, Ryosuke
%A Morgenroth, Wolfgang
%A Sergueev, Ilya
%A Yavaş, Hasan
%A Dubrovinsky, Leonid
%A Tolan, Metin
%A Sternemann, Christian
%A Wilke, Max
%T A portable on-axis laser-heating system for near-90° X-ray spectroscopy: application to ferropericlase and iron silicide
%J Journal of synchrotron radiation
%V 27
%N 2
%@ 1600-5775
%C [S.l.]
%I Wiley-Blackwell
%M PUBDB-2020-00771
%P 1-11
%D 2020
%X 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 Mg0.67Fe0.33O 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°.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:32153280
%U <Go to ISI:>//WOS:000519725000018
%R 10.1107/S1600577519017041
%U https://bib-pubdb1.desy.de/record/435695