Nonlinear Dust Acoustic Waves in Strongly Coupled Dusty Plasmas with Positively Charged Dust Particles

The nonlinear propagation of dust acoustic waves is investigated in four-component plasmas consisting of positively charged dust grains, trapped ions, nonthermal electrons, and photoelectron due to ultraviolet irradiation. We use generalized viscoelastic hydrodynamic model for strongly coupled dust...

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Published inCommunications in theoretical physics Vol. 65; no. 2; pp. 247 - 253
Main Authors Wang, Yun-Liang, Guo, Xiao-Yan, Li, Quan-Shui
Format Journal Article
LanguageEnglish
Published 01.02.2016
Subjects
Computational fluid dynamics
Dust
Fluid flow
Hydrodynamics
Joining
Mathematical analysis
Mathematical models
Nonlinearity
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Summary:The nonlinear propagation of dust acoustic waves is investigated in four-component plasmas consisting of positively charged dust grains, trapped ions, nonthermal electrons, and photoelectron due to ultraviolet irradiation. We use generalized viscoelastic hydrodynamic model for strongly coupled dust grain. In the weak nonlinearity limit, a modified Kadomstev-Petviashvili (KP) equation and a modified KP-Burger equation, which have a damping term coming from nonadiabatic charge variation, have been derived in the kinetic regime and hydrodynamic regime, respectively. With the increasing of UV photon flux, the hydrodynamic regime changes to kinetic regime. The approximate analytical line soliton and shock solutions are investigated in the kinetic regime and hydrodynamic regime, respectively.
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ISSN:0253-6102
1572-9494
DOI:10.1088/0253-6102/65/2/247