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Zobaer, M. S.; Mamun, A. A.

Observing the effects of the polarization force in strongly coupled dusty plasmas with suprathermal electrons. (English) Zbl 1284.82080

Astrophys. Space Sci. 347, No. 1, 145-149 (2013).
Summary: Our objective here is to investigate a strongly coupled dusty plasma system with the presence of polarization force (PF). This plasma consists of superthermal electrons, Maxwellian ions, and negatively charged dust grains. The nonlinear propagation of dust-acoustic (DA) waves in such dusty plasma system has been theoretically investigated by employing the reductive perturbation method. The Burgers’ and K-dV equations have been derived to and numerically analyzed. It has been found that the dust-acoustic shock and solitary waves exist associated with a negative potential only, and that the effect of the dust fluid temperature significantly modifies the basic properties (amplitude and width) of such nonlinear waves’ potential structures. We hope that the results of our present investigation should help us in understanding the localized electrostatic disturbances in space and laboratory strongly coupled dusty plasmas with superthermal electrons and polarization force.

Cited in 2 Documents

MSC:

82D10 Statistical mechanics of plasmas
76L05 Shock waves and blast waves in fluid mechanics

Keywords:

strongly coupled dusty plasma; superthermal electrons; DA waves; polarization force; reductive perturbation method; negative potential; shock and solitary waves
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References:

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