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Soft mean spherical approximation for dusty plasma liquids: One- component Yukawa systems with plasma shielding
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.ORCID iD: 0000-0001-9632-8104
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.ORCID iD: 0000-0002-6712-3625
2014 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1539-3755, E-ISSN 1550-2376, Vol. 90, no 5, 053101- p.Article in journal (Refereed) Published
Abstract [en]

The structure and thermodynamics of strongly coupled dusty plasmas are investigated with the soft mean spherical approximation. This integral theory approach is analytically solvable for Yukawa pair interactions yielding a closed-form solution for the direct correlation function. The pair correlation function, the structure factor, and basic thermodynamic quantities are calculated for a wide range of parameters. Exact consistency between the "energy"-"virial" thermodynamic routes and approximate consistency between the "energy" "compressibility" paths is demonstrated. Comparison with extensive molecular dynamics results is carried out and a remarkable agreement from the Coulomb limit to the strongly screened limit is revealed. The soft mean spherical approximation is concluded to be particularly well suited for the study of dusty plasma liquids, uniquely combining simplicity and accuracy.

Place, publisher, year, edition, pages
2014. Vol. 90, no 5, 053101- p.
Keyword [en]
Dust, Molecular dynamics, Plasma theory, Semiconductor plasmas, Thermodynamics, Closed form solutions, Direct correlation functions, Mean spherical approximation, Pair correlation functions, Pair interactions, Plasma shielding, Structure factors, Thermodynamic quantities
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-158290DOI: 10.1103/PhysRevE.90.053101ISI: 000345594900010Scopus ID: 2-s2.0-84913554192OAI: oai:DiVA.org:kth-158290DiVA: diva2:777841
Funder
Swedish National Space Board
Note

QC 20150109

Available from: 2015-01-09 Created: 2015-01-07 Last updated: 2017-12-05Bibliographically approved

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Tolias, PanagiotisRatynskaia, Svetlana

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