Experimental and modeling evidence for structural crossover in supercritical CO_{2}.

Cockrell, Cillian J; Dicks, Oliver; Wang, Ling; Trachenko, Kostya; Soper, Alan K; Brazhkin, Vadim V; Marinakis, Sarantos

Cockrell, Cillian J; Dicks, Oliver; Wang, Ling; Trachenko, Kostya; Soper, Alan K; Brazhkin, Vadim V; Marinakis, Sarantos.

Afiliación

Cockrell CJ; School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom.
Soper AK; ISIS Facility, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxon OX11 0QX, United Kingdom.
Brazhkin VV; Institute for High Pressure Physics, RAS, 108840 Moscow, Russia.
Marinakis S; School of Health, Sport and Bioscience, University of East London, Stratford Campus, Water Lane, London E15 4LZ, United Kingdom and Department of Chemistry and Biochemistry, School of Biological and Chemical Sciences, Queen Mary University of London, Joseph Priestley Building, Mile End Road, London

Phys Rev E ; 101(5-1): 052109, 2020 May.

Article en En | MEDLINE | ID: mdl-32575221

RESUMEN

The physics of supercritical states is understood to a much lesser degree compared to subcritical liquids. Carbon dioxide, in particular, has been intensely studied, yet little is known about the supercritical part of its phase diagram. Here, we combine neutron scattering experiments and molecular dynamics simulations and demonstrate the structural crossover at the Frenkel line. The crossover is seen at pressures as high as 14 times the critical pressure and is evidenced by changes of the main features of the structure factor and pair distribution functions.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Phys Rev E Año: 2020 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos

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