Fully nonlinear ion-acoustic solitary waves in a plasma with positive-negative ions and nonthermal electrons

2009 ◽  
Vol 16 (3) ◽  
pp. 032302 ◽  
Author(s):  
R. Sabry ◽  
W. M. Moslem ◽  
P. K. Shukla
Keyword(s):  
Solitary Waves ◽  
Negative Ions ◽  
Fully Nonlinear ◽  
Nonthermal Electrons ◽  
Ion Acoustic Solitary Waves ◽  
Ion Acoustic

scholarly journals Anomalous width variation of rarefactive ion acoustic solitary waves in the context of auroral plasmas

2004 ◽  
Vol 11 (2) ◽  
pp. 219-228 ◽  
Author(s):  
S. S. Ghosh ◽  
G. S. Lakhina
Keyword(s):  
Solitary Waves ◽  
Nonlinear Theory ◽  
Acoustic Waves ◽  
Large Amplitude ◽  
Magnetized Plasma ◽  
Amplitude Variation ◽  
Fully Nonlinear ◽  
Weakly Nonlinear ◽  
Ion Acoustic Solitary Waves ◽  
Ion Acoustic

Abstract. The presence of dynamic, large amplitude solitary waves in the auroral regions of space is well known. Since their velocities are of the order of the ion acoustic speed, they may well be considered as being generated from the nonlinear evolution of ion acoustic waves. However, they do not show the expected width-amplitude correlation for K-dV solitons. Recent POLAR observations have actually revealed that the low altitude rarefactive ion acoustic solitary waves are associated with an increase in the width with increasing amplitude. This indicates that a weakly nonlinear theory is not appropriate to describe the solitary structures in the auroral regions. In the present work, a fully nonlinear analysis based on Sagdeev pseudopotential technique has been adopted for both parallel and oblique propagation of rarefactive solitary waves in a two electron temperature multi-ion plasma. The large amplitude solutions have consistently shown an increase in the width with increasing amplitude. The width-amplitude variation profile of obliquely propagating rarefactive solitary waves in a magnetized plasma have been compared with the recent POLAR observations. The width-amplitude variation pattern is found to fit well with the analytical results. It indicates that a fully nonlinear theory of ion acoustic solitary waves may well explain the observed anomalous width variations of large amplitude structures in the auroral region.

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

2008 ◽  
Vol 15 (6) ◽  
pp. 063701 ◽  
Author(s):  
F. Sayed ◽  
M. M. Haider ◽  
A. A. Mamun ◽  
P. K. Shukla ◽  
B. Eliasson ◽  
...  
Keyword(s):  
Dusty Plasma ◽  
Solitary Waves ◽  
Negative Ions ◽  
Ion Acoustic Solitary Waves ◽  
Ion Acoustic

W-type ion-acoustic solitary waves in plasma consisting of cold ions and nonthermal electrons

2016 ◽  
Vol 90 (10) ◽  
pp. 1195-1205 ◽  
Author(s):  
I. Paul ◽  
S. Chandra ◽  
S. Chattopadhyay ◽  
S. N. Paul
Keyword(s):  
Solitary Waves ◽  
Nonthermal Electrons ◽  
Ion Acoustic Solitary Waves ◽  
Ion Acoustic ◽  
Cold Ions

Dust-ion Acoustic Solitary Waves In A Multi-component Plasma With Negative Ions

2011 ◽  
Author(s):  
B. S. Chahal ◽  
N. S. Saini ◽  
A. S. Bains ◽  
Vladimir Yu. Nosenko ◽  
Padma K. Shukla ◽  
...  
Keyword(s):  
Solitary Waves ◽  
Negative Ions ◽  
Ion Acoustic Solitary Waves ◽  
Ion Acoustic ◽  
Component Plasma
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