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Article Dans Une Revue Review of Scientific Instruments Année : 2023

Graphite resistive heated diamond anvil cell for simultaneous high-pressure and high-temperature diffraction experiments

Huijeong Hwang
Yoonah Bang
Jinhyuk Choi
Hyunchae Cynn
Zsolt Jenei
William Evans
Anita Ehnes
Iris Schwark
Konstantin Glazyrin
G. Diego Gatta
Paolo Lotti
Yongjae Lee
Hanns-Peter Liermann

Résumé

High-pressure and high-temperature experiments using a resistively heated diamond anvil cell have the advantage of heating samples homogeneously with precise temperature control. Here, we present the design and performance of a graphite resistive heated diamond anvil cell (GRHDAC) setup for powder and single-crystal x-ray diffraction experiments developed at the Extreme Conditions Beamline (P02.2) at PETRA III, Hamburg, Germany. In the GRHDAC, temperatures up to 2000 K can be generated at high pressures by placing it in a water-cooled vacuum chamber. Temperature estimates from thermocouple measurements are within +/−35 K at the sample position up to 800 K and within +90 K between 800 and 1400 K when using a standard seat combination of cBN and WC. Isothermal compression at high temperatures can be achieved by employing a remote membrane control system. The advantage of the GRHDAC is demonstrated through the study of geophysical processes in the Earth’s crust and upper mantle region.
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hal-04583795 , version 1 (22-05-2024)

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Huijeong Hwang, Yoonah Bang, Jinhyuk Choi, Hyunchae Cynn, Zsolt Jenei, et al.. Graphite resistive heated diamond anvil cell for simultaneous high-pressure and high-temperature diffraction experiments. Review of Scientific Instruments, 2023, 94 (8), ⟨10.1063/5.0132981⟩. ⟨hal-04583795⟩
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