The Effects of Inhomogeneity and Adiabatic Dusty Charge Fluctuation on Solitary Waves

MA Donglin (马栋林); ZHANG Xijun (张玺君); ZHANG Liping (张丽萍)

doi:10.1088/1009-0630/15/1/02

Plasma Science and Technology > 2013 > 15(1): 7-11. > DOI: 10.1088/1009-0630/15/1/02

MA Donglin (马栋林), ZHANG Xijun (张玺君), ZHANG Liping (张丽萍). The Effects of Inhomogeneity and Adiabatic Dusty Charge Fluctuation on Solitary Waves[J]. Plasma Science and Technology, 2013, 15(1): 7-11. DOI: 10.1088/1009-0630/15/1/02

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The Effects of Inhomogeneity and Adiabatic Dusty Charge Fluctuation on Solitary Waves

1 College of Computer and Communication, Lanzhou University of Technology, Lanzhou 730050, China 2 School of Science, Lanzhou University of Technology, Lanzhou 730050, China

Funds: supported by National Natural Science Foundation of China (No. 10975114), the Science-Technology Foundation of Gansu Province (1014RJZA017) and the Prominent Youth Foundation of LUT (No. 0910ZXC082)

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Received Date: May 08, 2011

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Abstract

Abstract

Using the perturbation method, the modified variable coe±cient Kadomtsev- Petviashvili (MKP) equation governing nonlinear dust acoustic solitary waves is for the first time derived with the combined e®ects of adiabatic dust charge fluctuation and higher-order transverse perturbation in inhomogeneous dusty plasmas due to the spatial gradients of dust charge and plasma densities. The MKP equation is reduced to the standard Kadomtsev-Petviashvili (KP) equation. The numerical results show that inhomogeneity has strong influence on the nonlinear properties of dust acoustic solitary waves.
- solitary waves,
- nonuniform dusty plasmas,
- dust charge fluctuation,
- Kadomtsev-Petviashvili equation

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