Improved Speed and Shape of Ion-Acoustic Waves in a Warm Plasma

被引：2
|
作者：
H.G.Abdelwahed [1 ,2 ]
E.K.El-Shewy [2 ]
机构：
[1] Physics Department, College of Sciences and Humanitarian Studies, Salman Bin Abdulaziz University
[2] Theoretical Physics Group, Faculty of Science, Mansoura University
来源：
CommunicationsinTheoreticalPhysics | 2013年 / 60卷 / 10期
关键词：
field equations; Sagdeev potential; solitons; nonlinear waves; shock waves; nonlinear Schrdinger(NLS)equation;
D O I：
暂无
中图分类号：
O53 [等离子体物理学];
学科分类号：
070204 ;
摘要：
The basic set of fluid equations can be reduced to the nonlinear Kortewege-de Vries(KdV)and nonlinear Schro¨dinger(NLS)equations.The rational solutions for the two equations has been obtained.The exact amplitude of the nonlinear ion-acoustic solitary wave can be obtained directly without resorting to any successive approximation techniques by a direct analysis of the given field equations.The Sagdeev’s potential is obtained in terms of ion acoustic velocity by simply solving an algebraic equation.The soliton and double layer solutions are obtained as a small amplitude approximation.A comparison between the exact soliton solution and that obtained from the reductive perturbation theory are also discussed.
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页码：445 / 452
页数：8
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