Liquidlike behavior of supercritical fluids (Articolo in rivista)

Type
Label
  • Liquidlike behavior of supercritical fluids (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.97.245702 (literal)
Alternative label
  • Gorelli, F; Santoro, M; Scopigno, T; Krisch, M; Ruocco, G (2006)
    Liquidlike behavior of supercritical fluids
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Gorelli, F; Santoro, M; Scopigno, T; Krisch, M; Ruocco, G (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 97 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Roma La Sapienza, CNR, INFM, Res Ctr SOFT, I-00185 Rome, Italy; LENS, I-50019 Florence, Italy; European Synchrotron Radiat Facil, F-38043 Grenoble, France; Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy (literal)
Titolo
  • Liquidlike behavior of supercritical fluids (literal)
Abstract
  • The high frequency dynamics of fluid oxygen has been investigated by inelastic x-ray scattering, at high pressures and room temperature. In spite of the markedly supercritical conditions (T approximate to 2T(c), P > 10(2)P(c)), the sound velocity exceeds the hydrodynamic value of about 20%, a feature which is the fingerprint of liquidlike dynamics. The comparison of the present results with literature data obtained in several fluids allow us to identify the extrapolation of the liquid-vapor-coexistence line in the (P/P-c, T/T-c) plane as the relevant edge between liquidlike and gaslike dynamics. More interestingly, this extrapolation is very close to the non-metal-metal transition in hot dense fluids, at pressure and temperature values as obtained by shock wave experiments. This result points to the existence of a connection between structural modifications and transport properties in dense fluids. (literal)
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