Dust acoustic waves in a collisional strongly coupled dusty plasmas

Progress in understanding the nonlinear features of dust-acoustic waves (DAWs) which accompany a collisional strongly and weakly coupled unmagnetized dusty plasma with Boltzmann distributed electrons, ions and negatively charged dust grains is presented. By using a hydrodynamic model, the Korteweg–d...

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Bibliographic Details
Published in:Astrophysics and space science 2012-11, Vol.342 (1), p.105-111
Main Authors: El-Awady, E. I., Djebli, M.
Format: Article
Language:English
Subjects:
Acoustics
Astrobiology
Astronomy
Astrophysics
Astrophysics and Astroparticles
Cosmology
Dust
Fluid mechanics
Observations and Techniques
Original Article
Physics
Physics and Astronomy
Plasma
Propagation
Shock waves
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
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Summary:Progress in understanding the nonlinear features of dust-acoustic waves (DAWs) which accompany a collisional strongly and weakly coupled unmagnetized dusty plasma with Boltzmann distributed electrons, ions and negatively charged dust grains is presented. By using a hydrodynamic model, the Korteweg–de Vries-Burgers (KdV-Burgers) equation is derived. The existence regions of the solitary pulses are defined precisely. Furthermore, numerical calculations reveal that, due to collisions, the DAWs damp waves and the damping rate of the waves depends mainly on the collision frequency. The collisions are found to significantly change the basic properties of the DAWs. The effects of electron-to-ion concentration ratio, and ion-to-electron temperature ratio have important roles in the behavior of the DAWs. The results may have relevance in space and laboratory dusty plasmas.
ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-012-1159-6