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Collective modes in two-dimensional one-component-plasma with logarithmic interaction

Khrapak, Sergey and Klumov, Boris and Khrapak, Alexey (2016) Collective modes in two-dimensional one-component-plasma with logarithmic interaction. Physics of Plasmas, 23, 052115. American Institute of Physics (AIP). DOI: 10.1063/1.4950829 ISSN 1070-664X

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Abstract

The collective modes of a familiar two-dimensional one-component-plasma with the repulsive logarithmic interaction between the particles are analysed using the quasi-crystalline Approximation (QCA) combined with the molecular dynamic simulation of the equilibrium structural properties. It is found that the dispersion curves in the strongly coupled regime are virtually independent of the coupling strength. Arguments based on the excluded volume consideration for the radial Distribution function allow us to derive very simple expressions for the dispersion relations, which Show excellent agreement with the exact QCA dispersion over the entire domain of wavelengths. Comparison with the results of the conventional fluid analysis is performed, and the difference is explained.

Item URL in elib:https://elib.dlr.de/106239/
Document Type:Article
Title:Collective modes in two-dimensional one-component-plasma with logarithmic interaction
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Khrapak, SergeyDLR, Sergey.Khrapak (at) dlr.deUNSPECIFIED
Klumov, BorisAix-Marseille-UniversityUNSPECIFIED
Khrapak, AlexeyRussian Academy of Sciences, khrapak (at) mail.ruUNSPECIFIED
Date:May 2016
Journal or Publication Title:Physics of Plasmas
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:23
DOI :10.1063/1.4950829
Page Range:052115
Publisher:American Institute of Physics (AIP)
Series Name:AIP Publishing
ISSN:1070-664X
Status:Published
Keywords:one-component-plasma, electrostatic oscillations, waves, collective modes
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Komplexe Plasmen / Theory, Simulation
Location: Oberpfaffenhofen
Institutes and Institutions:Research Group Complex Plasma
Research Group Complex Plasma > Research Group Complex Plasma
Deposited By: Khrapak, Sergey
Deposited On:27 Sep 2016 16:11
Last Modified:06 Sep 2019 15:18

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