Static pressure of 255 GPa (2.55 Mbar) by X-Ray diffraction: Comparison with extrapolation of the ruby pressure scale

Yogesh K. Vohra*, Steven J. Duclos, Keith E. Brister, Arthur L. Ruoff

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    39 Scopus citations

    Abstract

    X-ray-diffraction studies have been carried out to 255 GPa on various sample and gasket configurations in the diamond-anvil cell. Intense fluorescence emission bands were observed at 793 and 830 nm in some cases which correspond to 360 and 550 GPa on the extrapolated ruby pressure scale. The x-ray measured pressures were only 185 and 201 GPa, respectively. Reasons for this discrepancy between x-ray methods and optical methods at ultrahigh pressures are proposed.

    Original languageEnglish (US)
    Pages (from-to)574-577
    Number of pages4
    JournalPhysical review letters
    Volume61
    Issue number5
    DOIs
    StatePublished - 1988

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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