High pressure and 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 the GRHDAC 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 800-1400 K when using a standard seat combination of cBN and WC. Isothermal compression at high temperature 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.
Graphite resistive heated diamond anvil cell for simultaneous high-pressure and high-temperature diffraction experiments / H. Hwang, Y. Bang, J. Choi, H. Cynn, Z. Jenei, W.J. Evans, A. Ehnes, I. Schwark, K. Glazyrin, G. Diego Gatta, P. Lotti, C. Sanloup, Y. Lee, H. Liermann. - In: REVIEW OF SCIENTIFIC INSTRUMENTS. - ISSN 0034-6748. - 94:8(2023 Aug), pp. 083903.1-083903.14. [10.1063/5.0132981]
Graphite resistive heated diamond anvil cell for simultaneous high-pressure and high-temperature diffraction experiments
G. Diego GattaWriting – Review & Editing
;P. LottiWriting – Review & Editing
;
2023
Abstract
High pressure and 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 the GRHDAC 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 800-1400 K when using a standard seat combination of cBN and WC. Isothermal compression at high temperature 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.File | Dimensione | Formato | |
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RevScientInstrum_2023_HTHP-DAC_Ridotto.pdf
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