Pressure of two-dimensional Yukawa liquids. (6th May 2016)

• Record Type: Journal Article
• Authors: Feng, Yan; Goree, J; Liu, Bin; Wang, Lei; Tian, Wen-de
• Is Part Of: Journal of physics. Volume 49:Number 23(2016)
• Publication Date: 2016-05-06
• Subjects: Yukawa liquids -- dusty plasma -- molecular dynamics simulation; Physics -- Periodicals; 530
• DOI: 10.1088/0022-3727/49/23/235203
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: A simple analytic expression for the pressure of a two-dimensional Yukawa liquid is found by fitting results from a molecular dynamics simulation. The results verify that the pressure can be written as the sum of a potential term which is a simple multiple of the Coulomb potential energy at a distance of the Wigner–Seitz radius, and a kinetic term which is a multiple of the one for an ideal gas. Dimensionless coefficients for each of these terms are found empirically, by fitting. The resulting analytic expression, with its empirically determined coefficients, is plotted as isochores, or curves of constant area. These results should be applicable to monolayer dusty plasmas.