Ion-acoustic solitons in a warm plasma including negative ions in the vicinity of critical density

1992 ◽  
Vol 197 (2) ◽  
pp. 289-297 ◽  
Author(s):  
S. K. el-Labany ◽  
A. Sheikh
Keyword(s):  
Critical Density ◽  
Negative Ions ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons ◽  
Warm Plasma

Cylindrical ion-acoustic waves in a warm multicomponent plasma

2000 ◽  
Vol 63 (4) ◽  
pp. 343-353 ◽  
Author(s):  
S. K. EL-LABANY ◽  
S. A. EL-WARRAKI ◽  
W. M. MOSLEM
Keyword(s):  
Perturbation Theory ◽  
Acoustic Waves ◽  
Vries Equation ◽  
Negative Ions ◽  
Ion Acoustic Waves ◽  
Multicomponent Plasma ◽  
Reductive Perturbation ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons ◽  
Warm Plasma

Cylindrical ion-acoustic solitons are investigated in a warm plasma with negative ions and multiple-temperature electrons through the derivation of a cylindrical Korteweg–de Vries equation using a reductive perturbation theory. The results are compared with those for the corresponding planar solitons.

scholarly journals Effect of ion temperature on ion-acoustic solitons in a two-ion warm plasma with adiabatic positive and negative ions and isothermal electrons

1987 ◽  
Vol 37 (2) ◽  
pp. 322-322 ◽  
Author(s):  
S. G. Tagare
Keyword(s):  
Nonlinear Term ◽  
Kdv Equation ◽  
Negative Ions ◽  
Ion Temperature ◽  
Correct Version ◽  
Modified Kdv Equation ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons ◽  
Warm Plasma ◽  
Image Position

In the above mentioned paper, table 1 is incorrect and the correct version is given below. Thus the result which was there obtained, namely that the coefficient of the nonlinear term of the modified KdV equation becomes negative, is not correct and, in fact, the coefficient is always positive.

Highlights from the Asia Pacific Region

2013 ◽  
Vol 02 (01) ◽  
pp. 15-25 ◽  
Author(s):  
APPN Editorial Office
Keyword(s):  
Kdv Equation ◽  
Critical Density ◽  
Negative Ions ◽  
Mkdv Equation ◽  
Asia Pacific ◽  
Asia Pacific Region ◽  
Ion Acoustic Wave ◽  
Multicomponent Plasma ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons

It is well known that multicomponent plasma with negative ions supports a number of wave modes such as ion-acoustic solitons described by the Kortewege-de Vries (KdV) equation, modified KdV solitons at critical density of negative ions and ion-acoustic envelop solitons described by nonlinear Schrödinger equation (NLSE). The NLSE which is equivalent to the mKdV equation is applicable in describing evolution of ion-acoustic wave in plasma at critical density of negative ions which becomes modulationaly unstable when the nonlinear co-efficient is negative.

Ion-acoustic solitons in multi-component plasmas including negative ions at critical densities

1988 ◽  
Vol 39 (1) ◽  
pp. 71-79 ◽  
Author(s):  
Frank Verheest
Keyword(s):  
Negative Ions ◽  
Stationary Solutions ◽  
Reductive Perturbation Method ◽  
Positive Ions ◽  
Kdv Equations ◽  
Basic Fluid ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons ◽  
Modified Kdv Equations ◽  
Fast Ion

Ion-acoustic solitons in a plasma with different adiabatic ion constituents and isothermal electrons are studied via a reductive perturbation method. The basic fluid equations then give rise to KdV or modified KdV equations, depending upon the relative ion densities. At critical densities, rarefactive and compressive fast ion-acoustic solitons are possible. Explicit stationary solutions are discussed in the special case of cold ions, in a plasma containing two species of negative ions and one of positive ions. The inclusion of heavier ions, even at low densities, increases the amplitudes of the critical solitons.

Sheath potential distribution in a plasma including negative ions

1992 ◽  
Vol 48 (2) ◽  
pp. 229-236 ◽  
Author(s):  
H. Yamada ◽  
Z. Yoshida
Keyword(s):  
Potential Distribution ◽  
Negative Ions ◽  
Characteristic Parameter ◽  
Sagdeev Potential ◽  
Mean Velocity ◽  
Solvability Conditions ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons ◽  
The Mean ◽  
Structural Instabilities

Sheath potential distributions in electrostatic plasmas including negative ions have been studied using the Bohm equation. Since the mean velocity of the negative ions is not necessarily negligible compared with their thermal velocity, the contribution from non-thermal negative ions has been considered. The Sagdeev potential has been introduced to consider structural instabilities of the Bohm system. Wavy solutions related to ion-acoustic solitons bifurcate from the monotone asymptotic Bohm sheath solutions. The solvability conditions have also been discussed for characteristic parameter such as the concentration of negative ions and the Mach numbers of positive and negative ions.

Ion-acoustic solitons and double-layers in a plasma consisting of positive and negative ions with non-thermal electrons

2004 ◽  
Vol 31 (1) ◽  
pp. 91-100 ◽  
Author(s):  
T. S. Gill ◽  
P. Bala ◽  
H. Kaur ◽  
N. S. Saini ◽  
S. Bansal ◽  
...  
Keyword(s):  
Negative Ions ◽  
Double Layers ◽  
Ion Acoustic ◽  
Ion Acoustic Solitons
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