Influences of External Excitations on Solitary Waves in Nonthermal Dusty Plasma

被引:3
作者
Paul, A. [1 ]
Paul, Niranjan [2 ]
Mondal, K. K. [1 ]
Chatterjee, P. [2 ]
机构
[1] Cooch Behar Panchanan Barma Univ, Dept Math, Cooch Behar 736101, India
[2] Visva Bharati Univ, Dept Math, Santini Ketan 731235, W Bengal, India
基金
英国科研创新办公室;
关键词
non-thermal electrons; dust-ion collisional frequency; dust-ion acoustic solitary waves; damped forced Korteweg-de Vries equation; ACOUSTIC-WAVES; PROPAGATION; EVOLUTION;
D O I
10.1134/S1063780X22100063
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Reductive perturbation technique is employed to obtain damped forced Korteweg-de Vries (DFKdV) equation in a dusty plasma containing non-thermally distributed electrons in presence of solitary-pulse-type and Gaussian-shaped external forces. To study the behavior of dust-ion acoustic solitary waves (DIASWs), an approximate analytical solitary wave solution of DFKdV equation is found for small values of damping and external forces considering momentum conservation law of Korteweg-de Vries (KdV) equation. By assigning different values of the plasma parameters and strength of the external forces, approximate analytical solitary wave solutions of DFKdV equation are plotted to show the variation of width and amplitude of DIASWs. The results show that the non-thermal parameter (b), damping parameter, i.e., dust-ion collisional frequency (nu(id0)) and the strength of the external force play a very important role in the amplitude and width of the DIASWs. The investigated results can be helpful to study the characteristics of nonlinear waves in laboratory plasma and space plasma where external forces arise due to motion of charged space pollutants.
引用
收藏
页码:1013 / 1022
页数:10
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