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

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

open access.

Bibliographische Detailangaben
Veröffentlicht in:Journal of synchrotron radiation. - 1994. - 27(2020), Pt 2 vom: 01. März, Seite 414-424
1. Verfasser: Spiekermann, Georg (VerfasserIn)
Weitere Verfasser: 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
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Journal of synchrotron radiation
Schlagworte:Journal Article X-ray emission spectroscopy extreme conditions high pressure laser heating nuclear resonant inelastic scattering
Beschreibung
Zusammenfassung:open access.
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°
Beschreibung:Date Revised 20.03.2020
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1600-5775
DOI:10.1107/S1600577519017041