Optical calibration of pressure sensors for high pressures and temperatures

Journal Article · Sun May 01 00:00:00 EDT 2005 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1895467· OSTI ID:20713935

Goncharov, Alexander F; Zaug, Joseph M; Crowhurst, Jonathan C; Gregoryanz, Eugene ^[1]

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1. Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94551 (United States)

We present the results of Raman-scattering measurements of diamond ({sup 12}C) and of cubic boron nitride, and fluorescence measurements of ruby, Sm:yttrium aluminum garnet (Sm:YAG), and SrB{sub 4}O{sub 7}:Sm{sup 2+} in the diamond anvil cell at high pressures and temperatures. These measurements were accompanied by synchrotron x-ray-diffraction measurements on gold. We have extended the room-temperature calibration of Sm:YAG in a quasihydrostatic regime up to 100 GPa. The ruby scale is found to systematically underestimate pressure at high pressures and temperatures compared with all the other sensors. On this basis, we propose an alternative high-temperature ruby pressure scale that is valid to at least 100 GPa and 850 K.

• OSTI ID: 20713935
• Journal Information: Journal of Applied Physics, Vol. 97, Issue 9; Other Information: DOI: 10.1063/1.1895467; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM COMPOUNDS
BORON NITRIDES
BORON OXIDES
CALIBRATION
CARBON 12
DIAMONDS
FLUORESCENCE
GARNETS
GOLD
PHOTOLUMINESCENCE
PRESSURE RANGE GIGA PA
RAMAN EFFECT
RAMAN SPECTRA
RUBY
SAMARIUM
STRONTIUM COMPOUNDS
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS