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Optical calibration of pressure sensors for high pressures and temperatures

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Original languageEnglish
Article number094917
Number of pages5
JournalJournal of applied physics
Volume97
Issue number9
DOIs
Publication statusPublished - 1 May 2005

Abstract

We present the results of Raman-scattering measurements of diamond (C-12) and of cubic boron nitride, and fluorescence measurements of ruby, Sm:yttrium aluminum garnet (Sm:YAG), and SrB4O7:Sm2+ 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. (C) 2005 American Institute of Physics.

    Research areas

  • DIAMOND-ANVIL CELL, FLUORESCENCE SHIFTS, SM-YAG, RUBY, GPA, DEPENDENCE, GAUGE, SCALE, RANGE, LINES

ID: 11476750