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Waves in a Lennard‐Jones Dusty Plasma Liquid
Author(s) -
Rosenberg M.,
Kalman G. J.,
Grewal V.
Publication year - 2015
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201400057
Subject(s) - dusty plasma , plasma , physics , debye , spheres , lennard jones potential , hard spheres , dispersion (optics) , condensed matter physics , thermodynamics , molecular dynamics , quantum mechanics , astronomy
Recently it has been proposed to alter the interaction between dust grains in a plasma by applying ac electric fields to distort the Debye spheres surrounding the grains, which may lead to interaction potentials with a Lennard‐Jones form under certain conditions (e.g., Kompaneets et al., Phys. Plasmas 16 , 043705 (2009)). Motivated by this, we consider the dispersion relations of longitudinal and transverse waves in a dusty plasma liquid where the grains interact via a Lennard‐Jones potential. We use the Quasi‐Localized Charge approximation combined with an analytic expression for the pair distribution function for Lennard‐Jones fluids (Matteoli and Mansoori, J. Chem. Phys. 103 , 4672 (1995)). Possible dusty plasma experimental parameters are considered. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)