Instability of Waves in Magnetized Vortex-Like Ion Distribution Dusty Plasmas |
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Authors: | DUAN Wen-Shan CHEN Jian-Hong HONG Xue-Ren WAN Gui-Xin |
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Affiliation: | Department of Physics, Northwest Normal University, Lanzhou 730070, China |
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Abstract: | A modified Zakharov-Kuznetsov equation for small but finite amplitude dust acoustic waves in a magnetized votex-like ion distribution dusty plasma is obtained in this paper. Itseems that there are instability for a soliton under higher-ordertransverse perturbations in this system. There is a certaincritical value 4λ0. If the ratio of the wave length ofthe higher-order perturbations to the width of the soliton islarger than this critical value, the solitary wave is unstable,otherwise it is stable. |
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Keywords: | equationdust size distribution soliton modified Zakharov-Kuznetsov |
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