DocumentCode :
19883
Title :
Gardner Solitons and Double Layers in a Multi-Ion Plasma With Degenerate Electrons
Author :
Akhter, T. ; Hossain, M. Mofazzal ; Mamun, A.A.
Author_Institution :
Dept. of Phys., Jahangirnagar Univ., Dhaka, Bangladesh
Volume :
41
Issue :
5
fYear :
2013
fDate :
May-13
Firstpage :
1607
Lastpage :
1613
Abstract :
A precise theoretical investigation is made on ion-acoustic (IA) solitary waves (SWs) and double layers (DLs) in a degenerate multi-ion plasma (composed of inertial positive and negative ions and degenerate electrons). The standard reductive perturbation method is employed to derive the Korteweg-de Vries (K-dV), the mixed K-dV (mK-dV), and the Gardner (GE) equations. The GE admits SW and DL solutions for μ around its critical value μc (where μc is the value of μ corresponding to the vanishing of the nonlinear coefficient of the K-dV equation). The basic features of IA SWs and DLs are analyzed. It is found that the characteristics of IA SWs found from GE are different from those of the K-dV solitons and mK-dV solitons. The implications of our results to different space and laboratory plasma situations, where opposite polarity ions are observed, are briefly discussed.
Keywords :
Korteweg-de Vries equation; plasma ion acoustic waves; plasma sheaths; plasma solitons; Gardner equation; Gardner solitons; degenerate electrons; degenerate multi-ion plasma; double layer solution; ion-acoustic solitary wave characteristics; laboratory plasma; mixed Korteweg-de Vries equation; mixed Korteweg-de Vries solitons; opposite polarity ions; reductive perturbation method; solitary wave solution; space plasma; Electrostatics; Equations; Ions; Mathematical model; Neutrons; Plasmas; Solitons; Degenerate electron; double layers; ion-acoustic waves; solitary waves (SWs);
fLanguage :
English
Journal_Title :
Plasma Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-3813
Type :
jour
DOI :
10.1109/TPS.2013.2253551
Filename :
6497644
Link To Document :
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