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

作     者：H.G.Abdelwahed E.K.El-Shewy 

作者机构：Physics Department College of Sciences and Humanitarian Studies Salman Bin Abdulaziz University Theoretical Physics Group Faculty of Science Mansoura University 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2013年第60卷第10期

页      面：445-452页

核心收录：

学科分类：080503[工学-材料加工工程] 07[理学] 08[工学] 070204[理学-等离子体物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Supported by the Deanship of Scientific Research in Salman Bin Abdul-Aziz University Saudi Arabia under Grant No.104/T/33 

主　　题：field equations Sagdeev potential solitons nonlinear waves shock waves nonlinear SchrSdinger(NLS) equation 

摘      要：The basic set of fluid equations can be reduced to the nonlinear Kortewege-de Vries(KdV)and nonlinear Schro¨dinger(NLS)*** rational solutions for the two equations has been *** 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 *** Sagdeev’s potential is obtained in terms of ion acoustic velocity by simply solving an algebraic *** 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.