Results 141 to 150 of about 2,542 (183)
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Melting of sodium and potassium in a diamond anvil cell
Physical Review B, 1985Melting temperatures of sodium and potassium to 110 and 145 kbar, respectively, were determined by optical property changes with an externally heated diamond anvil cell using mineral oil as the pressure medium. The pressure was obtained from the known pressure and temperature shifts of the ruby fluorescence line.
, Zha, , Boehler
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Soldering diamonds into the diamond anvil cell
Review of Scientific Instruments, 1991Diamonds can be obtained with a metal coating suitable for soldering to metal components. This provides a satisfactory method for mounting the anvils in diamond anvil high-pressure cells.
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Synthetic diamonds for multimegabar pressures in the diamond anvil cell
High Pressure Research, 1990Abstract Synthetic Type 1b yellow diamonds containing nitrogen in substitutional form and with extremely low birefringence were used as anvils for ultra high pressures in the diamond anvil cell. Pressures were measured by the ruby fluorescence technique to above 200 GPa.
A. L. Ruoff, Y. K. Vohra
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A miniature multi-anvil apparatus using diamond as anvils—MDAC: Multi-axis diamond anvil cell
Review of Scientific InstrumentsThe diamond anvil cell (DAC) has been widely used in high-pressure research. Despite significant progress over the past five decades, the opposed anvil geometry in the DAC inevitably leads to a disk-shaped sample configuration at high pressure. This intrinsic limitation is largely responsible for the large pressure and temperature gradients in the DAC,
Guoyin Shen +3 more
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Carbon transport in diamond anvil cells
High Temperatures-High Pressures, 2003High-pressure-induced carbon transport from diamond anvils into the pressure chamber of diamond anvil cells (DACs) was studied by micro-Raman spectroscopy. Depending on experimental conditions (temperature and pressure), various carbon phases (amorphous carbon, diamond, microcrystalline or nanocrystalline graphite) were detected in the originally ...
Vitali Prakapenka +2 more
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Diamond anvil cell using metallic diamond electrodes
Japanese Journal of Applied Physics, 2017A novel diamond anvil cell specialized for resistivity measurements under high pressure have been developed. Boron-doped metallic diamond electrodes were deposited onto a nano-polycrystalline diamond anvil using a microwave plasma-assisted chemical vapor deposition technique combined with electron beam lithography.
Ryo Matsumoto +4 more
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A diamond gasket for the laser-heated diamond anvil cell
Review of Scientific Instruments, 2001Advances in laser heating techniques with diamond anvil cells have enabled direct investigations of materials under extreme pressure-temperature conditions. The success of uniform heating to the maximum temperatures at megabar pressures relies critically on maximizing the gasket thickness which in turn depends upon the shear strength of the gasket.
Guangtian Zou +4 more
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The stability of a sample in a diamond anvil cell
Journal of Applied Physics, 1987We have performed a theoretical analysis of the stability of a gasketed sample in a diamond anvil cell. Our analysis shows the stability of the sample depends principally on the yield strength and the thickness of the gasket, the bulk modulus and the radius of the sample, and the geometry of the culet. Our results yield a simple methodology that can be
William C. Moss, Kenneth A. Goettel
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Pressure buffering in a diamond anvil cell
Mineralogical Magazine, 2000AbstractThe clinopyroxenes kanoite and spodumene were studied by single-crystal X-ray diffraction in a diamond anvil cell (DAC) at room temperature. At the displacive phase transitions between the C2/c and P21/c polymorphs both phases coexist within the same crystal. In this two-phase region the pressure in the DAC remains constant.
T. Arlt, R. J. Angel
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Pneumatic driver for diamond anvil cells
Review of Scientific Instruments, 1982Use of Bassett-style diamond anvil cells in a remote environment is inconvenient since they must be accessed for each change in pressure. A simple pneumatic driver, however, has been designed and built which permits remote operation.
Alan A. Webb, Syed B. Qadri
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