The Intramolecular Pressure and the Extension of the Critical Point’s Influence Zone on the Order Parameter
Joint Authors
Rivera, Jose L.
Guerra-Gonzalez, Roberto
Nicanor-Guzman, Homero
Source
Advances in Condensed Matter Physics
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-08-06
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The critical point affects the coexistence behavior of the vapor-liquid equilibrium densities.
The length of the critical influence zone is under debate because for some properties, like shear viscosity, the extension is only a few degrees, while for others, such as the density order parameter, the critical influence zone covers up to hundreds of degrees below the critical temperature.
Here we show that, for ethane, the experimental critical influence zone covers a wide zone of tens of degrees (below the critical temperature) down to a transition temperature, at which the apparent critical influence zone vanishes, and the transition temperature can be predicted through a pressure analysis of the coexisting bulk liquid phase, using a simple molecular potential.
The liquid phases within the apparent critical influence zone show low densities, making them behave internally like their corresponding vapor phases.
Therefore, Molecular Dynamics simulations reveal that the experimentally observed wide extension of the critical influence zone is the result of a vapor-like effect due to low bulk liquid phase densities.
American Psychological Association (APA)
Rivera, Jose L.& Nicanor-Guzman, Homero& Guerra-Gonzalez, Roberto. 2015. The Intramolecular Pressure and the Extension of the Critical Point’s Influence Zone on the Order Parameter. Advances in Condensed Matter Physics،Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1052239
Modern Language Association (MLA)
Rivera, Jose L.…[et al.]. The Intramolecular Pressure and the Extension of the Critical Point’s Influence Zone on the Order Parameter. Advances in Condensed Matter Physics No. 2015 (2015), pp.1-8.
https://search.emarefa.net/detail/BIM-1052239
American Medical Association (AMA)
Rivera, Jose L.& Nicanor-Guzman, Homero& Guerra-Gonzalez, Roberto. The Intramolecular Pressure and the Extension of the Critical Point’s Influence Zone on the Order Parameter. Advances in Condensed Matter Physics. 2015. Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1052239
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052239