The Widom line as the crossover between liquid-like and gas-like behaviour in supercritical fluids (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• The Widom line as the crossover between liquid-like and gas-like behaviour in supercritical fluids (Articolo in rivista) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1038/NPHYS1683 (literal)

Alternative label

• Simeoni, G.G.; Bryk, T.; Gorelli, F.A.; ; Krisch, M. ; Ruocco, G.; Santoro, M.; Scopigno, T. (2010)
  The Widom line as the crossover between liquid-like and gas-like behaviour in supercritical fluids
  in Nature physics (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Simeoni, G.G.; Bryk, T.; Gorelli, F.A.; ; Krisch, M. ; Ruocco, G.; Santoro, M.; Scopigno, T. (literal)

Pagina inizio

• 503 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 6 (literal)

Rivista

• Nature physics (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Simeoni, GG 2,3; Bryk, T 4,5; Gorelli, FA 1,6; Krisch, M 7; Ruocco, G 6,8; Santoro, M 1,6; Scopigno, T 6,8 1. LENS, European Lab Non Linear Spect, I-50019 Florence, Italy 2. Tech Univ Munich, Forsch Neutronenquelle Heinz, Maier Leibnitz FRM 2, D-85747 Garching, Germany 3. Tech Univ Munich, Phys Dept E13, D-85748 Garching, Germany 4. Natl Acad Sci Ukraine, Inst Condensed Matter Phys, UA-79011 Lvov, Ukraine 5. Natl Polytech Univ Lviv, UA-79013 Lvov, Ukraine 6. UOS Roma, CNR, IPCF, I-00185 Rome, Italy 7. European Synchrotron Radiat Facil, F-38043 Grenoble, France 8. Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy (literal)

Titolo

• The Widom line as the crossover between liquid-like and gas-like behaviour in supercritical fluids (literal)

Abstract

• According to textbook definitions1, there exists no physical observable able to distinguish a liquid from a gas beyond the critical point, and hence only a single fluid phase is defined. There are, however, some thermophysical quantities, having maxima that define a line emanating from the critical point, named 'the Widom line'2 in the case of the constant-pressure specific heat. We determined the velocity of nanometric acoustic waves in supercritical fluid argon at high pressures by inelastic X-ray scattering and molecular dynamics simulations. Our study reveals a sharp transition on crossing the Widom line demonstrating how the supercritical region is actually divided into two regions that, although not connected by a first-order singularity, can be identified by different dynamical regimes: gas-like and liquid-like, reminiscent of the subcritical domains. These findings will pave the way to a deeper understanding of hot dense fluids, which are of paramount importance in fundamental and applied sciences. (literal)

Prodotto di

• Istituto per i processi chimico-fisici (IPCF) (Istituto)
• MD.P01.024.001 Dinamica dei sistemi disordinati: materia soffice e biologica (MD.P01.024.002) (Modulo)

Autore CNR

• TULLIO SCOPIGNO (Unità di personale interno)
• FEDERICO AIACE GORELLI (Unità di personale interno)

Incoming links:

Prodotto

• Istituto per i processi chimico-fisici (IPCF) (Istituto)
• MD.P01.024.001 Dinamica dei sistemi disordinati: materia soffice e biologica (MD.P01.024.002) (Modulo)

Autore CNR di

• TULLIO SCOPIGNO (Unità di personale interno)
• FEDERICO AIACE GORELLI (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Nature physics (Rivista)