The dust acoustic waves in a hot nonthermal dusty plasma with variable dust charge under transverse perturbations

2008 ◽  
Vol 86 (12) ◽  
pp. 1381-1385 ◽  
Author(s):  
H -Y Wang ◽  
K -B Zhang
Keyword(s):  
Solitary Waves ◽  
Acoustic Waves ◽  
Finite Amplitude ◽  
Higher Order ◽  
Reductive Perturbation Method ◽  
Fluid Temperature ◽  
Kp Equation ◽  
Dust Acoustic Waves ◽  
Dust Charge ◽  
Dust Acoustic

The effects of nonthermal distributed ions, the adiabatic dust-charge variation, the dust-fluid temperature, and the higher order transverse perturbations on small but finite amplitude dust acoustic waves have been investigated. A (2 + 1) Kadomtsev–Perviashvili (KP) equation and a (3 + 1) KP equation are derived by using the reductive perturbation method, respectively. Results shows that in the presence of the higher order transverse perturbations, the peak amplitude of the solitary waves may decrease, whereas their width increases as compared to the one-dimensional case. Meanwhile, not only compressive but also rarefactive solitary waves can coexist in this system. Furthermore, the nonthermally distributed ions have significant influence on the normalized dust charge.PACS No.: 52.35.Sb

Localized coherent nonlinear wave structures in dusty plasma with non-thermal ions

2007 ◽  
Vol 73 (6) ◽  
pp. 921-932 ◽  
Author(s):  
TARSEM SINGH GILL ◽  
CHANCHAL BEDI ◽  
NARESHPAL SINGH SAINI ◽  
HARVINDER KAUR
Keyword(s):  
Perturbation Method ◽  
Solitary Waves ◽  
Vries Equation ◽  
Thermal Parameter ◽  
Reductive Perturbation Method ◽  
Double Layers ◽  
Dust Charge ◽  
Dust Acoustic Solitary Waves ◽  
Reductive Perturbation ◽  
Dust Acoustic

AbstractIn the present research paper, the characteristics of dust-acoustic solitary waves (DASWs) and double layers (DLs) are studied. Ions are treated as non-thermal and variable dust charge is considered. The Korteweg–de Vries equation is derived using a reductive perturbation method. It is noticed that compressive solitons are obtained up to a certain range of relative density δ (=ni0/ne0) beyond which rarefactive solitons are observed. The study is further extended to investigate the possibility of DLs. Only compressive DLs are permissible. Both DASWs and DLs are sensitive to variation of the non-thermal parameter.

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

scholarly journals Effect of Nonthermal Ions on Dust Acoustic Waves in Magnetized Plasma

2019 ◽  
Vol 8 (1) ◽  
pp. 21-27
Author(s):  
Banajit Sarmah ◽  
Anuradha Devi ◽  
Jnanjyoti Sarma
Keyword(s):  
Solitary Waves ◽  
Acoustic Waves ◽  
Fluid Model ◽  
Density Ratio ◽  
Direction Cosine ◽  
Magnetized Plasma ◽  
Sagdeev Potential ◽  
Dust Acoustic Waves ◽  
Magnetized Dusty Plasma ◽  
Dust Acoustic

A fluid model is considered to study the nonlinear dust- acoustic waves (DAW) in magnetized dusty plasma. The model consists of dust articles having negative charge, nonthermal ions, and Boltzmann electrons. Sagdeev Potential equation is derived in the form of an energy integral by applying nonperturbative approach. The pseudopotential (Sagdeev potential) profile is analyzed to study the characteristic of the solitary waves. The study has been made related to the transition of the DAW and the corresponding characters by observing the variation of amplitudes and width of the solitons with Mach number, temperature ratio, density ratio, concentration of nonthermal ions, and the direction cosine. The parametric ranges are estimated numerically to confirm the existence of solitary waves of arbitrary amplitude.

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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