Nonplanar electrostatic shock waves in an opposite polarity dust plasma with nonextensive electrons and ions

Pramana ◽  
2017 ◽  
Vol 88 (6) ◽  
Author(s):  
M Amina ◽  
S A Ema ◽  
A A Mamun
Keyword(s):  
Shock Waves ◽  
Opposite Polarity ◽  
Nonextensive Electrons ◽  
Electrons And Ions ◽  
Dust Plasma

Dust acoustic shock waves in dusty plasma of opposite polarity with non-extensive electron and ion distributions

2014 ◽  
Vol 80 (3) ◽  
pp. 517-528 ◽  
Author(s):  
S. K. Zaghbeer ◽  
H. H. Salah ◽  
N. H. Sheta ◽  
E. K. El-Shewy ◽  
A. Elgarayhi
Keyword(s):  
Shock Waves ◽  
Dusty Plasma ◽  
Collisionless Plasma ◽  
Homogeneous System ◽  
Opposite Polarity ◽  
Reductive Perturbation Method ◽  
Ion Distributions ◽  
Electrons And Ions ◽  
Dust Acoustic ◽  
Space Environments

A theoretical investigation has been made of obliquely propagating nonlinear electrostatic shock structures. The reductive perturbation method has been used to derive the Korteweg-de Vries-Burger (KdV-Burger) equation for dust acoustic shock waves in a homogeneous system of a magnetized collisionless plasma comprising a four-component dusty plasma with massive, micron-sized, positively, negatively dust grains and non-extensive electrons and ions. The effect of dust viscosity coefficients of charged dusty plasma of opposite polarity and the non-extensive parameters of electrons and ions have been studied. The behavior of the oscillatory and monotonic shock waves in dusty plasma has been investigated. It has been found that the presence of non-extensive parameters significantly modified the basic properties of shock structures in space environments.

Dust-Ion-Acoustic Solitary and Shock Structures in Multi-Ion Plasmas with Super-Thermal Electrons

2017 ◽  
Vol 72 (7) ◽  
pp. 627-635 ◽  
Author(s):  
Md. Masum Haider ◽  
Aynoon Nahar
Keyword(s):  
Shock Waves ◽  
Small Amplitude ◽  
Opposite Polarity ◽  
Plasma System ◽  
And Shock Waves ◽  
Laboratory Plasmas ◽  
Ion Acoustic ◽  
Fluid Equations ◽  
De Vries ◽  
Solitary And Shock Waves

AbstractThe propagation of dust-ion-acoustic (DIA) solitary and shock waves in multi-ion (MI) unmagnetised and magnetised plasmas have been studied theoretically. The plasma system contains positively and negatively charged inertial ions, opposite polarity dusts, and high energetic super-thermal electrons. The fluid equations in the system are reduced to a Korteweg-de Vries (K-dV) and Korteweg-de Vries Burger (K-dVB) equations in the limit of small amplitude perturbation. The effect of super-thermal electrons, the opposite polarity of ions, and dusts in the solitary and shock waves are presented graphically and numerically. Present investigations will help to astrophysical and laboratory plasmas.

Effect of q-nonextensive distribution of electrons on dust acoustic shock waves in strongly coupled dusty plasmas

2011 ◽  
Vol 89 (10) ◽  
pp. 1073-1078 ◽  
Author(s):  
Hamid Reza Pakzad
Keyword(s):  
Shock Waves ◽  
Acoustic Waves ◽  
Burgers Equation ◽  
Dusty Plasmas ◽  
Reductive Perturbation Method ◽  
Nonlinear Propagation ◽  
Nonextensive Electrons ◽  
Strongly Coupled ◽  
Dust Acoustic ◽  
Nonextensive Distribution

The reductive perturbation method is used to derive the Kordeweg – de Vries – Burgers equation in strongly coupled dusty plasmas containing Boltzmann distributed ions and q-nonextensive electrons. It is observed that the nonlinear propagation of the dust acoustic waves gives rise to shock structures when there is strong correlation among the dust grains. The effect of the q-nonextensive parameter on the shock waves is discussed.

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