Dust ion-acoustic solitary waves in a dusty plasma with positive and negative ions

被引:56
|
作者
Sayed, F. [1 ]
Haider, M. M. [1 ]
Mamun, A. A. [1 ]
Shukla, P. K. [2 ,3 ,5 ,6 ,7 ]
Eliasson, B. [2 ,3 ]
Adhikary, N. [4 ]
机构
[1] Jahangirnagar Univ, Dept Phys, Dhaka 1342, Bangladesh
[2] Ruhr Univ Bochum, Fak Phys & Astron, Inst Theoret Phys 4, D-44780 Bochum, Germany
[3] Umea Univ, Dept Phys, SE-90187 Umea, Sweden
[4] Inst Adv Study Sci & Technol, Div Mat Sci, Gauhati 781035, Assam, India
[5] Univ KwaZulu Natal, Sch Phys, ZA-4000 Durban, South Africa
[6] Univ Strathclyde, Scottish Univ Phys Alliance, Dept Phys, Glasgow G4 ONG, Lanark, Scotland
[7] Univ Tecn Lisboa, Inst Super Tecn, GoLP Inst Plasmas & Fusao Nucl, P-1049001 Lisbon, Portugal
关键词
D O I
10.1063/1.2920212
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
Properties of small but finite amplitude dust ion-acoustic (DIA) solitary waves in a dusty plasma composed of inertialess electrons, positive and negative inertial ions, and immobile negative/positive charged dust grains are investigated. By using the multifluid dusty plasma model, the Kortweg-de Vries equation and energy integral for small and large amplitude solitary pulses, are derived. It is found that the presence of the negative ions modifies the properties of the solitary DIA waves, and provides the possibility of positive and negative solitary potential structures to coexist. The present results may be useful for understanding the salient features of localized DIA excitations that may appear in data from forthcoming laboratory experiments and space observations. (C) 2008 American Institute of Physics.
引用
收藏
页数:7
相关论文
共 50 条