Localized coherent nonlinear wave structures in dusty plasma with non-thermal ions

被引：1
|
作者：
Gill, Tarsem Singh [1 ]
Bedi, Chanchal [1 ]
Saini, Nareshpal Singh [1 ]
Kaur, Harvinder [2 ]
机构：
[1] Guru Nanak Dev Univ, Dept Phys, Amritsar 143005, Punjab, India
[2] Khalsa Coll, Dept Phys, Amritsar 143002, India
来源：
JOURNAL OF PLASMA PHYSICS | 2007年 / 73卷 / 06期
关键词：
D O I：
10.1017/S0022377807006393
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：
In the present research paper, the characteristics of dust-acoustic solitary waves (DASWs) and double layers (DLs) are studied. Ions are treated as nonthermal and variable dust charge is considered. The Korteweg - de Vries equation is derived using a reductive perturbation method. It is noticed that compressive solitons are obtained up to a certain range of relative density delta (= n(i0)/n(e0)) beyond which rarefactive solitons are observed. The study is further extended to investigate the possibility of DLs. Only compressive DLs are permissible. Both DASWs and DLs are sensitive to variation of the non-thermal parameter.
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收藏
页码：921 / 932
页数：12
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