Nonplanar dust acoustic solitary waves in a strongly coupled dusty plasma with superthermal ions

The nonplanar amplitude modulation of dust acoustic (DA) envelope solitary waves in a strongly coupled dusty plasma (SCDP) has been investigated. By using a reductive perturbation technique, a modified nonlinear Schrödinger equation (NLSE) including the effects of geometry, polarization, and ion sup...

Full description

Saved in:
Bibliographic Details
Published in:Physics of plasmas 2014-12, Vol.21 (12), p.123710
Main Authors: El-Labany, S. K., El-Taibany, W. F., El-Shamy, E. F., Zedan, N. A.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Acoustic coupling
Amplitude modulation
AMPLITUDES
CYLINDRICAL CONFIGURATION
Dust
DUSTS
Dusty plasmas
FREQUENCY MODULATION
Geometry
IONS
MATHEMATICAL SOLUTIONS
NONLINEAR PROBLEMS
Perturbation methods
PERTURBATION THEORY
PLASMA
Plasma physics
POLARIZATION
Propagation
Schrodinger equation
SCHROEDINGER EQUATION
Solitary waves
SOUND WAVES
SPHERICAL CONFIGURATION
Spherical waves
Stability
WAVE PROPAGATION
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The nonplanar amplitude modulation of dust acoustic (DA) envelope solitary waves in a strongly coupled dusty plasma (SCDP) has been investigated. By using a reductive perturbation technique, a modified nonlinear Schrödinger equation (NLSE) including the effects of geometry, polarization, and ion superthermality is derived. The modulational instability (MI) of the nonlinear DA wave envelopes is investigated in both planar and nonplanar geometries. There are two stable regions for the DA wave propagation strongly affected by polarization and ion superthermality. Moreover, it is found that the nonlinear DA waves in spherical geometry are the more structurally stable. The larger growth rate of the nonlinear DA MI is observed in the cylindrical geometry. The salient characteristics of the MI in the nonplanar geometries cannot be found in the planar one. The DA wave propagation and the NLSE solutions are investigated both analytically and numerically.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4904902