Strategies for in situ laser heating in the diamond anvil cell at an X‐ray diffraction beamline. (1st January 2014)

• Record Type: Journal Article
• Authors: Petitgirard, Sylvain; Salamat, Ashkan; Beck, Pierre; Weck, Gunnar; Bouvier, Pierre
• Is Part Of: Journal of synchrotron radiation. Volume 21:Part 1(2014)
• Page Start: 89
• Page End: 96
• Publication Date: 2014-01-01
• Subjects: Synchrotron radiation -- Periodicals; Free electron lasers -- Periodicals; 539.73505
• DOI: 10.1107/S1600577513027434
• Languages: English
• ISSNs: 0909-0495

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>An overview of several innovations regarding <italic>in situ</italic> laser‐heating techniques in the diamond anvil cell at the high‐pressure beamline ID27 of the European Synchrotron Radiation Facility is presented. Pyrometry measurements have been adapted to allow simultaneous double‐sided temperature measurements with the installation of two additional online laser systems: a CO₂ and a pulsed Nd:YAG laser system. This reiteration of laser‐heating advancements at ID27 is designed to pave the way for a new generation of state‐of‐the‐art experiments that demand the need for synchrotron diffraction techniques. Experimental examples are provided for each major development. The capabilities of the double pyrometer have been tested with the Nd:YAG continuous‐wave lasers but also in a time‐resolved configuration using the nanosecond‐pulsed Nd:YAG laser on a Fe sample up to 180 GPa and 2900 K. The combination of time‐resolved X‐ray diffraction with <italic>in situ</italic> CO₂ laser heating is shown with the crystallization of a high‐pressure phase of the naturally found pyrite mineral MnS₂ (11 GPa, 1100–1650 K).</p> </abstract>