Dust acoustic shock waves in a suprathermal dusty plasma with dust charge fluctuation

The properties of small but finite amplitude dust acoustic (DA) shock waves are studied in a charge varying dusty plasma with ions and electrons having kappa velocity distribution. We obtain the global Debye length including the influence of suprathermality effects and dust charge fluctuations. It i...

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Bibliographic Details
Published in:Astrophysics and space science 2013, Vol.343 (1), p.257-263
Main Authors: Shahmansouri, M., Alinejad, H.
Format: Article
Language:English
Subjects:
Amplitudes
Astrobiology
Astronomy
Astrophysics
Astrophysics and Astroparticles
Charge
Cosmology
Debye length
Deviation
Dust
Dusty plasmas
Fluctuation
Ions
Observations and Techniques
Original Article
Physics
Physics and Astronomy
Plasma physics
Shock waves
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Velocity distribution
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Summary:The properties of small but finite amplitude dust acoustic (DA) shock waves are studied in a charge varying dusty plasma with ions and electrons having kappa velocity distribution. We obtain the global Debye length including the influence of suprathermality effects and dust charge fluctuations. It is shown that the effects of suprathermality of ions/electrons and dust charge fluctuation significantly modify the basic properties of DA shock wave. We observe that only negative DA shock waves will be excited in this model. The amplitude of DA shock wave increases with deviation of electrons or ions from Maxwellian distribution via decrease of spectral index, κ j ( j = i , e denotes, ions and electrons, respectively). Also, it is indicated that the amplitude and steepness of the shock front decreases with an increase in the ion temperature.
ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-012-1216-1