Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 115, Issue 8, Pages 1713-1717Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1721425115
Keywords
high pressure; diamond anvil cell; deformation
Categories
Funding
- NSF [EAR-1345112, EAR-1447438]
- Natural Science Alliance Fund (NSAF) [U1530402]
- Department of Energy (DOE)-National Nuclear Security Administration (NNSA) [DE-NA0001974]
- NSF
- DOE, Office of Basic Energy Sciences (BES) [DE-AC02-06CH11357]
- EFree, an Energy Frontier Research Center - US DOE, Office of Science [DE-SC0001057]
- EFree, an Energy Frontier Research Center - US DOE, Office of BES [DE-SC0001057]
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The diamond anvil cell (DAC) is considered one of the dominant devices to generate ultrahigh static pressure. The development of the DAC technique has enabled researchers to explore rich high-pressure science in the multimegabar pressure range. Here, we investigated the behavior of the DAC up to 400 GPa, which is the accepted pressure limit of a conventional DAC. By using a submicrometer synchrotron X-ray beam, double cuppings of the beveled diamond anvils were observed experimentally. Details of pressure loading, distribution, gasket-thickness variation, and diamond anvil deformation were studied to understand the generation of ultrahigh pressures, which may improve the conventional DAC techniques.
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