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

Abstract

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.

Dust-Ion-Acoustic Rogue Waves in a Dusty Plasma Having Super-Thermal Electrons

“…First, we are interested to observe numerically stable and unstable parametric regimes of DIAWs in the presence of super-thermal electrons by depicting the variation of P/Q with k for different plasma parameters. In our present analysis, we have considered that m i = 3 × 10 −6 m d , Z d = 10 3 Z i , and T e = 10T i [50][51][52][53].…”

Dynamic properties of strongly coupled dusty plasmas with particles of finite dimensions

“…First of all, it is evident that in a strongly coupled dusty plasma the electrostatic force between dust particles dominates in comparison with other contributions to interaction, such as the ion drag force, etc. The other reason is that the dust component should only slightly affect the ionization equilibrium in the surrounding plasma, otherwise it is necessary to take into account the charge variation of dust particles by incorporating into consideration the electron and ion dynamics . In the present research, those assumptions are presumed to be simultaneously fulfilled in order to focus all attention on the influence the finiteness of dust particles dimensions has on their collective dynamic properties, which particularly include the dynamic structure factor and the spectrum of dust‐acoustic waves.…”

Dust-Acoustic Rogue Waves in an Electron-Positron-Ion-Dust Plasma Medium

“…13 ) cm −3[19][20][21][50][51][52][53], N e0 (10 7 -1013 ) cm −3 [18-21,50-53], N p0 7 × 10 7 cm −3 [18,53], k B T e (3-8) eV [19-21,50-53], k B T p 8 eV [18,53], k B T i (0.2-1) eV [19-21,50-53], k B T d (0.1-0.3) eV [19-21,50-53], and Z d 10 3 -10 4 [19-21,50-53], and for laboratory edge dusty plasma, N e0…”