English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/21735
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:

Title

The gas–liquid phase-transition singularities in the framework of the liquid-state integral equation formalism

AuthorsSarkisov, Gari; Lomba, Enrique
KeywordsLiquid-vapour transformations
Phase diagrams
Isothermal transformations
Compressibility
Issue Date2-Jun-2005
PublisherAmerican Institute of Physics
CitationJournal of Chemical Physics 122(21): 214504 (2005)
AbstractThe singularities of various liquid-state integral equations derived from the Ornstein–Zernike relation and its temperature derivatives, have been investigated in the liquid–vapor transition region. As a general feature, it has been found that the existence of a nonsolution curve on the vapor side of the phase diagram, on which both the direct and the total correlation functions become complex—with a finite isothermal compressibility—also corresponds to the locus of points where the constant-volume heat capacity diverges, in consonance with a divergence of the temperature derivative of the correlation functions. In contrast, on the liquid side of the phase diagram one finds that a true spinodal (a curve of diverging isothermal compressibilities) is reproduced by the Percus–Yevick and Martynov–Sarkisov integral equations, but now this curve corresponds to states with finite heat capacity. On the other hand, the hypernetted chain approximation exhibits a nonsolution curve with finite compressibilities and heat capacities in which, as temperature is lowered, the former tends to diverge.
Description6 pages, 4 figures.-- PACS: 64.70.Fx; 65.20.+w; 02.30.Rz; 62.10.+s
Publisher version (URL)http://dx.doi.org/10.1063/1.1925269
URIhttp://hdl.handle.net/10261/21735
DOI10.1063/1.1925269
ISSN0021-9606
Appears in Collections:(IQFR) Artículos
Files in This Item:
File Description SizeFormat 
GetPDFServlet.pdf85,89 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.