Ion-acoustic solitons and shocks in negative ion-beam relativistic plasma

1998 ◽  
Vol 26 (3) ◽  
pp. 987-994 ◽  
Author(s):  
K.K. Mondal ◽  
S.N. Paul ◽  
A. Roychowdhury
Keyword(s):  
Ion Beam ◽  
Relativistic Plasma ◽  
Negative Ion ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons

Face-to-Face Collisions of Bright and Dark Ion Acoustic Solitons in Superthermal Electrons for Different Geometrical Configurations

2018 ◽  
Vol 73 (10) ◽  
pp. 893-904 ◽  
Author(s):  
E.F. El-Shamy ◽  
N.A. El-Bedwehy ◽  
M. Shokry ◽  
S.K. El-Labany
Keyword(s):  
Phase Shift ◽  
Negative Ion ◽  
Superthermal Electrons ◽  
Face To Face ◽  
Laboratory Plasmas ◽  
Ion Acoustic ◽  
De Vries ◽  
The Face ◽  
Ion Acoustic Solitons ◽  
Non Linear Propagation

AbstractThe face-to-face collision of ion acoustic solitons (IASs) in superthermal plasmas composed of positive and negative ion fluids and superthermal electrons is investigated for different geometrical configurations. For the generic case, the extended Poincaré-Lighthill-Kuo (EPLK) analysis is employed to obtain the extended Korteweg-de Vries (EKdV) equations and phase shift equations. The non-linear propagation and the face-to-face collision of bright and dark IASs are studied. In addition, when the concentration of ion reaches the critical value, the EPLK method is applied to obtain the modified Korteweg-de Vries (mKdV) equations and the phase shift relations, which govern the excitation and the face-to-face collision of bright and dark IASs. Appropriately, the effects of several parameters such as the electron concentration, the superthermality of electrons and the diversity in the system’s geometry under consideration on the trajectories of IASs after the collision are discussed. Numerical calculations lead to some highlights on the properties of bright and dark IASs (e.g. in laboratory plasmas such as laser–matter/plasma interaction experiments and in astrophysical environments such as lower part of magnetosphere).

Linear and nonlinear obliquely propagating ion-acoustic waves in magnetized negative ion plasma with non-thermal electrons

2013 ◽  
Vol 79 (5) ◽  
pp. 893-908 ◽  
Author(s):  
M. K. MISHRA ◽  
S. K. JAIN
Keyword(s):  
Acoustic Waves ◽  
Kdv Equation ◽  
Negative Ions ◽  
Ion Concentration ◽  
Negative Ion ◽  
Slow Mode ◽  
Ion Temperature ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons ◽  
Ion Species

AbstractIon-acoustic solitons in magnetized low-β plasma consisting of warm adiabatic positive and negative ions and non-thermal electrons have been studied. The reductive perturbation method is used to derive the Korteweg–de Vries (KdV) equation for the system, which admits an obliquely propagating soliton solution. It is found that due to the presence of finite ion temperature there exist two modes of propagation, namely fast and slow ion-acoustic modes. In the case of slow-mode if the ratio of temperature to mass of positive ion species is lower (higher) than the negative ion species, then there exist compressive (rarefactive) ion-acoustic solitons. It is also found that in the case of slow mode, on increasing the non-thermal parameter (γ) the amplitude of the compressive (rarefactive) soliton decreases (increases). In fast ion-acoustic mode the nature and characteristics of solitons depend on negative ion concentration. Numerical investigation in case of fast mode reveals that on increasing γ, the amplitude of compressive (rarefactive) soliton increases (decreases). The width of solitons increases with an increase in non-thermal parameters in both the modes for compressive as well as rarefactive solitons. There exists a value of critical negative ion concentration (αc), at which both compressive and rarefactive ion-acoustic solitons appear as described by modified KdV soliton. The value of αc decreases with increase in γ.

Amplification of ion-acoustic solitons by an ion beam

1978 ◽  
Vol 20 (6) ◽  
pp. 561-568 ◽  
Author(s):  
E Okutsu ◽  
M Nakamura ◽  
Y Nakamura ◽  
T Itoh
Keyword(s):  
Ion Beam ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons

scholarly journals Dissipative ion-acoustic solitons in ion-beam plasma obeying a κ-distribution

AIP Advances ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 045218 ◽  
Author(s):  
Kengne Emmanuel ◽  
Liu Wuming
Keyword(s):  
Ion Beam ◽  
Beam Plasma ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons

A study of ion-acoustic solitons and double layers in a multispecies collisionless weakly relativistic plasma

2005 ◽  
Vol 71 (1) ◽  
pp. 23-34 ◽  
Author(s):  
TARSEM SINGH GILL ◽  
HARVINDER KAUR ◽  
NARESHPAL SINGH SAINI
Keyword(s):  
Kdv Equation ◽  
Collisionless Plasma ◽  
Relativistic Plasma ◽  
Double Layers ◽  
Hot Electron ◽  
Ion Temperature ◽  
Ion Acoustic ◽  
De Vries ◽  
Ion Acoustic Solitons ◽  
Weakly Relativistic Plasma

The effect on the propagation of ion-acoustic solitons and double layers has been studied in collisionless weakly relativistic plasma consisting of two-electron temperature with isothermal electrons and finite ion temperature. The Korteweg de-Vries (KdV) equation is derived for ion-acoustic solitons propagating in a collisionless plasma. This equation is solved in a stationary frame to obtain the expression for soliton phase velocity, soliton width and peak soliton amplitude. It is observed that these quantities are significantly influenced by the relativistic effect, ion temperature, low-temperature electron density and ratio of cold to hot electron temperatures. Many features expected from hot ion theory and two species electron plasmas automatically emerge. The analysis is further extended to higher order nonlinearity and modified Korteweg de-Vries (mKdV) equation is derived. Even though compressive and rarefactive ion-acoustic solitons are obtained, only rarefactive ion-acoustic double layers are obtained in the present investigation.

Negative ion-acoustic solitons in a two-component magnetized plasma

1988 ◽  
Vol 31 (6) ◽  
pp. 1549 ◽  
Author(s):  
L. T. Song ◽  
L. C. Lee ◽  
L. Huang
Keyword(s):  
Magnetized Plasma ◽  
Negative Ion ◽  
Two Component ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons
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