Ultrahigh pressures - Optical observations and Raman measurements of hydrogen and deuterium to 1.47 Mbar

Details Ultrahigh pressures - Optical observations and Raman measurements of hydrogen and deuterium to 1.47 Mbar Ultrahigh pressures - Optical observations and Raman measurements of hydrogen and deuterium to 1.47 Mbar

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phrvl..55...99m&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 55, July 1, 1985, p. 99-102.

Physics

53

Deuterium, Gas Analysis, Gas Pressure, Hydrogen, Solidified Gases, Frequency Shift, High Pressure, Molecular Oscillations, Raman Spectra, Room Temperature

Scientific paper

Hydrogen and deuterium have been pressurized under static conditions to 1.47 Mbar, which is higher by a factor of 2 than the static data of Sharma et al. (1980). Measurements of the vibron indicate an initial increase and then a sharp decrease in frequency at pressures above 0.5 Mbar. At 1.14 Mbar the vibron frequency decreased to the zero-pressure value, and at 1.47 Mbar the frequency of the vibron in hydrogen is 90/cm below the value of the vibrational mode of the isolated molecule. This pronounced softening of the vibron suggests strengthened intermolecular interaction.

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