The width of the solitary wave in dusty plasma

2016 ◽  
Vol 82 (1) ◽  
Author(s):  
Behrooz Malekolkalami ◽  
Amjad Alipanah
Keyword(s):  
Continuous Function ◽  
Solitary Wave ◽  
Dusty Plasma ◽  
Computer Algebra ◽  
Function Versus ◽  
Potential Method ◽  
Sagdeev Potential ◽  
Plasma Parameters ◽  
Width Function ◽  
Ion Acoustic

The Sagdeev potential method is employed to compute the width of the ion-acoustic solitary wave propagated in a dusty plasma containing three components (dust–ion–electron). The results indicate that the width is a continuous function over the allowable ranges of plasma parameters. The complexity of the resulting equations is an obstacle to the expression of the width function in an explicit form in terms of the parameters. Thus, computer algebra is needed to plot the graph of the width function versus the parameters, which helps us to understand the width changes as the parameters change.

scholarly journals Electrostatic shock properties inferred from AKR fine structure

2003 ◽  
Vol 10 (1/2) ◽  
pp. 87-92 ◽  
Author(s):  
R. Pottelette ◽  
R. A. Treumann ◽  
M. Berthomier ◽  
J. Jasperse
Keyword(s):  
Electric Fields ◽  
Acoustic Waves ◽  
Sagdeev Potential ◽  
Plasma Parameters ◽  
Fluid Approximation ◽  
Auroral Kilometric Radiation ◽  
Ion Acoustic ◽  
Electron Holes ◽  
Spectral Frequency ◽  
Electron Acoustic

Abstract. The auroral kilometric radiation (AKR) consists of a large number of fast drifting elementary radiation events that have been interpreted as travelling electron holes resulting from the nonlinear evolution of electron-acoustic waves. The elementary radiation structures sometimes become reflected or trapped in slowly drifting larger structures where the parallel electric fields are located. These latter features have spectral frequency drifts which can be interpreted in terms of the propagation of shock-like disturbances along the auroral field line at velocities near the ion-acoustic speed. The amplitude, speed, and shock width of such localized ion-acoustic shocks are determined here in the fluid approximation from the Sagdeev potential, assuming realistic plasma parameters. It is emphasized that the electrostatic potentials of such nonlinear structures contribute to auroral acceleration.

scholarly journals Characteristics of ion-acoustic solitary wave in a laboratory dusty plasma under the influence of ion-beam

2012 ◽  
Vol 19 (10) ◽  
pp. 103704 ◽  
Author(s):  
M. K. Deka ◽  
N. C. Adhikary ◽  
A. P. Misra ◽  
H. Bailung ◽  
Y. Nakamura
Keyword(s):  
Solitary Wave ◽  
Dusty Plasma ◽  
Ion Beam ◽  
Ion Acoustic

Large-amplitude ion-acoustic double layers in a plasma with warm ions

1990 ◽  
Vol 68 (2) ◽  
pp. 222-226 ◽  
Author(s):  
R. K. Roychoudhury ◽  
Sikha Bhattacharyya ◽  
Y. P. Varshni
Keyword(s):  
Potential Method ◽  
Double Layers ◽  
Ion Temperature ◽  
Sagdeev Potential ◽  
Electron Population ◽  
Numerical Studies ◽  
Ion Acoustic ◽  
Temperature Electron ◽  
Ion Acoustic Double Layers ◽  
Two Temperature

The conditions for the existence of an ion-acoustic double layer in a plasma with warm ions and two distinct groups of hot electrons have been studied using the Sagdeev potential method. A comparison is made with the published results of Bharuthram and Shukla for cold ions and a two-temperature electron population. Numerical studies have been made to find out the effect of a finite ion temperature on the Mach number of the double layers.

Observation of large-amplitude ion acoustic solitary waves in a plasma

1987 ◽  
Vol 38 (3) ◽  
pp. 461-471 ◽  
Author(s):  
Yoshiharu Nakamura
Keyword(s):  
Solitary Wave ◽  
Acoustic Waves ◽  
Wave Train ◽  
Negative Ions ◽  
Threshold Value ◽  
Potential Method ◽  
Positive Pulse ◽  
Plasma Device ◽  
Ion Acoustic ◽  
Double Plasma Device

Propagation of nonlinear ion acoustic waves in a multi-component plasma with negative ions is investigated in a double-plasma device. When the density of negative ions is larger than a critical value, a broad negative pulse evolves to rarefactive solitons, and a positive pulse whose amplitude is less than a certain threshold value becomes a subsonic wave train. In the same plasma, a positive pulse whose amplitude is larger than the threshold develops into a solitary wave. The critical amplitude is measured as a function of the density of negative ions and compared with predictions of the pseudo-potential method. The energy distribution of electrons in the solitary wave is also measured.

Discoveries of waves in dusty plasmas

2010 ◽  
Vol 77 (4) ◽  
pp. 437-455 ◽  
Author(s):  
A. A. MAMUN ◽  
P. K. SHUKLA
Keyword(s):  
Dusty Plasma ◽  
Acoustic Waves ◽  
Dusty Plasmas ◽  
Laboratory Plasma ◽  
Plasma Parameters ◽  
Ion Acoustic ◽  
Nonlinear Features ◽  
Linear And Nonlinear ◽  
Basic Characteristics ◽  
Basic Features

AbstractThe basic features of dusty plasmas, particularly basic characteristics of dust in a plasma, and typical dusty plasma parameters for different space and laboratory plasma conditions, are presented. The complexity and the diversity of the field of dusty plasma physics are briefly discussed. Theoretical and experimental discoveries of linear and nonlinear features of waves, particularly dust-ion-acoustic and dust-acoustic waves, in dusty plasmas are reviewed.

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