Compression of Ice to 210 Gigapascals: Infrared Evidence for a Symmetric Hydrogen-Bonded Phase

DOI Web Site 被引用文献28件
  • A. F. Goncharov
    Geophysical Laboratory and Center for High Pressure Research, Carnegie Institution of Washington, 5251 Broad Branch Road, NW, Washington, DC 20015, USA.
  • V. V. Struzhkin
    Geophysical Laboratory and Center for High Pressure Research, Carnegie Institution of Washington, 5251 Broad Branch Road, NW, Washington, DC 20015, USA.
  • M. S. Somayazulu
    Geophysical Laboratory and Center for High Pressure Research, Carnegie Institution of Washington, 5251 Broad Branch Road, NW, Washington, DC 20015, USA.
  • R. J. Hemley
    Geophysical Laboratory and Center for High Pressure Research, Carnegie Institution of Washington, 5251 Broad Branch Road, NW, Washington, DC 20015, USA.
  • H. K. Mao
    Geophysical Laboratory and Center for High Pressure Research, Carnegie Institution of Washington, 5251 Broad Branch Road, NW, Washington, DC 20015, USA.

書誌事項

公開日
1996-07-12
DOI
  • 10.1126/science.273.5272.218
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:p> Protonated and deuterated ices (H <jats:sub>2</jats:sub> O and D <jats:sub>2</jats:sub> O) compressed to a maximum pressure of 210 gigapascals at 85 to 300 kelvin exhibit a phase transition at 60 gigapascals in H <jats:sub>2</jats:sub> O ice (70 gigapascals in D <jats:sub>2</jats:sub> O ice) on the basis of their infrared reflectance spectra determined with synchrotron radiation. The transition is characterized by soft-mode behavior of the <jats:italic>ν</jats:italic> <jats:sub>3</jats:sub> O-H or O-D stretch below the transition, followed by a hardening (positive pressure shift) above it. This behavior is interpreted as the transformation of ice phase VII to a structure with symmetric hydrogen bonds. The spectroscopic features of the phase persisted to the maximum pressures (210 gigapascals) of the measurements, although changes in vibrational mode coupling were observed at 150 to 160 gigapascals. </jats:p>

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  • Science

    Science 273 (5272), 218-220, 1996-07-12

    American Association for the Advancement of Science (AAAS)

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