Influence of a finite level of ion acoustic waves on Raman gain in inhomogeneous plasma

2000 ◽  
Vol 7 (9) ◽  
pp. 3751-3761
Author(s):  
H. C. Barr ◽  
T. J. M. Boyd ◽  
A. V. Lukyanov
Keyword(s):  
Acoustic Waves ◽  
Inhomogeneous Plasma ◽  
Raman Gain ◽  
Ion Acoustic Waves ◽  
Ion Acoustic

Evolution of nonlinear dust-ion-acoustic waves in an inhomogeneous plasma

2006 ◽  
Vol 13 (5) ◽  
pp. 052308 ◽  
Author(s):  
De-long Xiao ◽  
J. X. Ma ◽  
Yang-fang Li ◽  
Yinhua Xia ◽  
M. Y. Yu
Keyword(s):  
Acoustic Waves ◽  
Inhomogeneous Plasma ◽  
Ion Acoustic Waves ◽  
Ion Acoustic ◽  
Dust Ion Acoustic Waves

Effect of finite ion-temperature on ion-acoustic solitary waves in an inhomogeneous plasma

1981 ◽  
Vol 59 (6) ◽  
pp. 719-721 ◽  
Author(s):  
Bhimsen K. Shivamoggi
Keyword(s):  
Solitary Wave ◽  
Solitary Waves ◽  
Acoustic Waves ◽  
Inhomogeneous Plasma ◽  
Ion Temperature ◽  
Ion Acoustic Waves ◽  
Weakly Nonlinear ◽  
Ion Acoustic Solitary Waves ◽  
Ion Acoustic ◽  
Velocity Of Propagation

The propagation of weakly nonlinear ion–acoustic waves in an inhomogeneous plasma is studied taking into account the effect of finite ion temperature. It is found that, whereas both the amplitude and the velocity of propagation decrease as the ion–acoustic solitary wave propagates into regions of higher density, the effect of a finite ion temperature is to reduce the amplitude but enhance the velocity of propagation of the solitary wave.

On the periodicity of ion-acoustic waves in an inhomogeneous plasma

1978 ◽  
Vol 20 (3) ◽  
pp. 345-350 ◽  
Author(s):  
M. D. Gunzburger
Keyword(s):  
Acoustic Waves ◽  
Subsonic Flow ◽  
Initial Conditions ◽  
Inhomogeneous Plasma ◽  
Ion Acoustic Waves ◽  
Ion Acoustic ◽  
Flow Speeds ◽  
Asymptotically Periodic ◽  
Moving Plasma ◽  
The Media

The existence of periodic ion-acoustic waves propagating through an inhomogeneous moving plasma is studied. For supersonic flow speeds it is shown that periodic excitations result in periodic responses independent of the nature of the media properties and the initial conditions. For subsonic flow speeds, periodic responses exist only under certain restrictions on the media and the initial conditions. However, most cases of physical interest are in the class of problems for which periodic or asymptotically periodic responses exist.

scholarly journals Trapping and entrainment of electromagnetic wave pulses into supercritical regions of inhomogeneous plasma by ion-acoustic waves

1988 ◽  
Vol 6 (2) ◽  
pp. 313-319 ◽  
Author(s):  
E. M. Gromov ◽  
V. I. Talanov
Keyword(s):  
Electromagnetic Wave ◽  
Acoustic Waves ◽  
Inhomogeneous Plasma ◽  
Ion Acoustic Waves ◽  
Ion Acoustic ◽  
Em Field

A mechanism of trapping and entrainment of electromagnetic (EM) field pulses into supercritical regions of an inhomogeneous plasma by ion-acoustic waves is considered.

scholarly journals Effect of Finite Ion Temperature and Modulational Instability of Ion-Acoustic Waves in Presence of an Inhomogeneous Plasma

1985 ◽  
Vol 40 (4) ◽  
pp. 421-424
Author(s):  
Sikha Bhattacharyya ◽  
R. K. Roy Choudhury
Keyword(s):  
Solitary Waves ◽  
Acoustic Waves ◽  
Modulational Instability ◽  
Inhomogeneous Plasma ◽  
Extended Version ◽  
Ion Temperature ◽  
Ion Acoustic Waves ◽  
Ion Acoustic Solitary Waves ◽  
Ion Acoustic ◽  
Frame Work

Using an extended version of K. B. M. method we have investigated the effect of finite ion temperature on ion-acoustic solitary waves. Modulational instability has been discussed in a frame work of nonlinear Schrödinger equation. Some numerical results are also given.

Effect of ion temperature and inhomogeneity on modulational instability of ion acoustic waves

1996 ◽  
Vol 56 (2) ◽  
pp. 229-236
Author(s):  
Ijaz-Ur Rahman Durrani
Keyword(s):  
Schrödinger Equation ◽  
Acoustic Waves ◽  
Schrodinger Equation ◽  
Modulational Instability ◽  
Inhomogeneous Plasma ◽  
Nonlinear Schrodinger Equation ◽  
Ion Temperature ◽  
Ion Acoustic Waves ◽  
Ion Acoustic ◽  
Critical Wavenumber

The propagation of ion acoustic waves in an inhomogeneous plasma is studied in the presence of finite ion temperature. The standard nonlinear Schrödinger equation is obtained, and the regions of instability are plotted. It is claimed that these extraneous factors tend to lower the value of the critical wavenumber.

scholarly journals Raman gain against a background of non-thermal ion fluctuations in a plasma

2000 ◽  
Vol 64 (5) ◽  
pp. 623-630
Author(s):  
H. C. BARR ◽  
T. J. M. BOYD ◽  
A. V. LUKYANOV
Keyword(s):  
Raman Scattering ◽  
Acoustic Waves ◽  
Stimulated Raman Scattering ◽  
Scattered Light ◽  
Inhomogeneous Plasma ◽  
Langmuir Wave ◽  
Raman Gain ◽  
Plasma Inhomogeneity ◽  
Ion Acoustic Wave ◽  
Ion Acoustic

A complex stimulated Raman scattering event against a background of non-thermal ion acoustic waves in an inhomogeneous plasma is described. We obtain analytic forms for the Raman gain due to a five-wave interaction consisting of conventional three-wave Raman scattering followed by the decay of the Raman Langmuir wave into a second Langmuir wave (or a second scattered light wave) and an ion acoustic wave. Very modest levels of ion waves produce a significant effect on Raman convective gain. A combination of plasma inhomogeneity and suprathermal ion fluctuations may offer a means for the control of Raman gain.

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