Dust-acoustic waves in strongly coupled plasmas with variable dust charge

2000 ◽  
Vol 7 (8) ◽  
pp. 3137-3140 ◽  
Author(s):  
B. S. Xie ◽  
M. Y. Yu
Keyword(s):  
Acoustic Waves ◽  
Dust Acoustic Waves ◽  
Strongly Coupled ◽  
Strongly Coupled Plasmas ◽  
Dust Charge ◽  
Dust Acoustic ◽  
Coupled Plasmas

Effect of nonadiabatic dust charge variations on nonlinear dust acoustic waves with nonisothermal ions

2002 ◽  
Vol 9 (4) ◽  
pp. 1150-1156 ◽  
Author(s):  
Samiran Ghosh ◽  
Susmita Sarkar ◽  
Manoranjan Khan ◽  
M. R. Gupta
Keyword(s):  
Acoustic Waves ◽  
Dust Acoustic Waves ◽  
Dust Charge ◽  
Dust Acoustic

Dust-acoustic waves in strongly coupled dusty plasmas with nonextensive electrons and ions

2012 ◽  
Vol 90 (7) ◽  
pp. 675-681 ◽  
Author(s):  
E.I. El-Awady ◽  
M. Djebli
Keyword(s):  
Acoustic Waves ◽  
Dusty Plasmas ◽  
Reductive Perturbation Method ◽  
Dust Acoustic Waves ◽  
Strongly Coupled ◽  
Electrons And Ions ◽  
Dust Acoustic ◽  
Nonlinear Features ◽  
Solitary And Shock Waves ◽  
Nonextensive Distribution

The nonlinear features of dust-acoustic waves in a strongly coupled unmagnetized dusty plasma containing electrons and ions following q-nonextensive distribution, and negatively charged mobile dust are investigated by using the reductive perturbation method. The effects of important parameters, such as the q-parameter, temperature, density, and velocity on the properties of solitary and shock waves are discussed. The conditions for the formation of solitary structures and monotonic and oscillatory shock structures are also found. The implications of our result in space and laboratory dusty plasmas are discussed.

Effect of nonadiabaticity of dust charge variation on dust acoustic waves: Generation of dust acoustic shock waves

2001 ◽  
Vol 63 (4) ◽  
Author(s):  
M. R. Gupta ◽  
Susmita Sarkar ◽  
Samiran Ghosh ◽  
M. Debnath ◽  
Manoranjan Khan
Keyword(s):  
Shock Waves ◽  
Acoustic Waves ◽  
Dust Acoustic Waves ◽  
Charge Variation ◽  
Dust Charge ◽  
Dust Acoustic

Adiabatic dust-acoustic waves with dust-charge fluctuations

1998 ◽  
Vol 60 (3) ◽  
pp. 541-550 ◽  
Author(s):  
S. V. SINGH ◽  
N. N. RAO
Keyword(s):  
Acoustic Waves ◽  
Kdv Equation ◽  
Soliton Solutions ◽  
Plasma Pressure ◽  
Charge Fluctuations ◽  
Dust Acoustic Waves ◽  
Dust Charge ◽  
Dust Acoustic ◽  
Supersonic Regime ◽  
Dust Charge Fluctuations

We study the effect of charge fluctuations on the propagation of adiabatic linear and nonlinear dust-acoustic waves by considering the electrons and ions to be in Boltzmann equilibria, and the dust grains to satisfy the fluid equations with full adiabatic equation of state. Linear dust-acoustic waves are damped owing to the dust-charge fluctuations, and the damping rate decreases with increasing adiabatic dust pressure. Nonlinear dust-acoustic waves are governed by the set of coupled Boussinesq-like and dust-charge perturbation equations. It is shown that for unidirectional propagation, the Boussinesq-like equation reduces to usual Korteweg–de Vries (KdV) equation. At early times, the localized solutions of the KdV equation are damped owing to the dust-charge perturbations. The soliton amplitude decreases with increasing adiabatic dust plasma pressure and increases with Mach number. Soliton solutions are found only in the supersonic regime.

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