Density dependence of fermi resonance of supercritical carbon dioxide

Y. Yagi, H. Tsugane, H. Inomata, S. Saito

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20 Citations (Scopus)


Infrared spectra of supercritical carbon dioxide were measured at various pressures and temperatures. The Fermi resonance absorbance of supercritical CO2 was influenced by pressure and temperature. The absorbance data revealed that the density dependence of Fermi resonance in the vicinity of the critical point was different from that in the region far from the critical point and was found to be related to that of the isothermal compressibility.

Original languageEnglish
Pages (from-to)139-142
Number of pages4
JournalJournal of Supercritical Fluids
Issue number3
Publication statusPublished - 1993 Sept


  • Fermi resonance
  • infrared spectra
  • supercritical CO


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