scholarly journals Large amplitude ion-acoustic solitary waves in a warm negative ion plasma with superthermal electrons: The fast mode revisited

AIP Advances ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 065305
Author(s):  
X. Mushinzimana ◽  
F. Nsengiyumva
Keyword(s):  
Solitary Waves ◽  
Large Amplitude ◽  
Negative Ion ◽  
Fast Mode ◽  
Superthermal Electrons ◽  
Ion Plasma ◽  
Ion Acoustic Solitary Waves ◽  
Ion Acoustic

Head-on collision of ion acoustic solitary waves in an electron-positron-ion plasma with superthermal electrons

2010 ◽  
Vol 17 (12) ◽  
pp. 122314 ◽  
Author(s):  
Prasanta Chatterjee ◽  
Uday narayan Ghosh ◽  
Kaushik Roy ◽  
S. V. Muniandy ◽  
C. S. Wong ◽  
...  
Keyword(s):  
Solitary Waves ◽  
Superthermal Electrons ◽  
Ion Plasma ◽  
Electron Positron ◽  
Ion Acoustic Solitary Waves ◽  
Ion Acoustic

Nonlinear wave propagation of large amplitude ion-acoustic solitary waves in negative ion plasmas with superthermal electrons

2013 ◽  
Vol 79 (5) ◽  
pp. 613-621 ◽  
Author(s):  
S. K. EL-LABANY ◽  
R. SABRY ◽  
E. F. EL-SHAMY ◽  
D. M. KHEDR
Keyword(s):  
Solitary Waves ◽  
Large Amplitude ◽  
Negative Ions ◽  
High Energy ◽  
Negative Ion ◽  
Energetic Electrons ◽  
Ion Acoustic Solitary Waves ◽  
Ion Acoustic ◽  
Negative Ion Plasmas ◽  
Arbitrary Amplitude

AbstractInvestigation of arbitrary amplitude nonlinear ion-acoustic solitary waves which accompany collisionless positive–negative ion plasmas with high-energy electrons (represented by kappa distribution) is presented. Arbitrary amplitude solitary waves are investigated by deriving an energy-integral equation involving a Sagdeev-like pseudopotential. The existence regions of solitary pulses are, defined precisely, modified by the superthermality of energetic electrons. Furthermore, numerical calculations reveal that both compressive and rarefactive pulses may exist for negative ion mass groups in Titan's atmosphere. The superthermality of energetic electrons are found to modify the existence domains of large amplitude ion-acoustic waves in Titan's atmosphere. The dependence of solitary excitation characteristics on the superthermal parameter, the negative ion concentration, the positive-to-negative ions mass ratio, and the Mach number have been investigated. The present study might be helpful to understand the excitation of fully nonlinear ion-acoustic solitary pulses that may appear in the interplanetary medium and/or in the astrophysical plasmas in general.

Effect of ion temperature on ion-acoustic solitary waves in a two-ion plasma

1988 ◽  
Vol 66 (6) ◽  
pp. 467-470 ◽  
Author(s):  
Sikha Bhattacharyya ◽  
R. K. Roychoudhury
Keyword(s):  
Mach Number ◽  
Analytical Solution ◽  
Solitary Waves ◽  
Experimental Result ◽  
Ion Temperature ◽  
Ion Plasma ◽  
Ion Acoustic Solitary Waves ◽  
Ion Acoustic ◽  
Cold Ions ◽  
Pseudopotential Approach

The effect of ion temperature on ion-acoustic solitary waves in the case of a two-ion plasma has been investigated using the pseudopotential approach of Sagdeev. An analytical solution for relatively small amplitudes has also been obtained. Our result has been compared, whenever possible, with the experimental result obtained by Nakamura. It is found that a finite ion temperature considerably modifies the restrictions on the Mach number obtained for cold ions.

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