Abstract
In this article, the specification and application of the new double-sided YAG laser-heating system built on beamline I15 at Diamond Light Source are presented. This system, combined with diamond anvil cell and X-ray diffraction techniques, allows in situ and ex situ characterization of material properties at extremes of pressure and temperature. In order to demonstrate the reliability and stability of this experimental setup over a wide range of pressure and temperature, a case study was performed and the phase diagram of lead was investigated up to 80 GPa and 3300 K. The obtained results agree with previously published experimental and theoretical data, underlining the quality and reliability of the installed setup.
Highlights
Over the last few decades, the laser-heated diamond anvil cell (LH-DAC) coupled with in situ synchrotron X-ray diffraction (XRD) has become a powerful and routinely used experimental method for studying material properties under extreme conditions of pressure (P) and temperature (T)
We report the results of our study of the phase diagram of Pb up to 80 GPa and 3300 K
A flat mirror, fabricated by the Central Laser rations become important and can strongly affect the T Facility at the STFC Rutherford Appleton Laboratory, UK, measurement when refractive optical systems are used to with two 45 mm-diameter holes is placed at the entrance of the probe hot spots with large T gradients
Summary
Over the last few decades, the laser-heated diamond anvil cell (LH-DAC) coupled with in situ synchrotron X-ray diffraction (XRD) has become a powerful and routinely used experimental method for studying material properties under extreme conditions of pressure (P) and temperature (T). The reason why this method is taking precedence over laboratory experiments using spectroscopic probes and ex situ analysis is mainly because of the robustness and tunability of the components involved, nominally the LH-DAC, the synchrotron radiation facilities and the XRD technique. We report the results of our study of the phase diagram of Pb up to 80 GPa and 3300 K
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