Generation of zonal flows by drift waves in a dusty plasma

2000 ◽  
Vol 7 (9) ◽  
pp. 3822-3825 ◽  
Author(s):  
P. K. Shukla
Keyword(s):  
Dusty Plasma ◽  
Drift Waves ◽  
Zonal Flows

scholarly journals Excitation of zonal flow by the modulational instability in electron temperature gradient driven turbulence

2008 ◽  
Vol 74 (3) ◽  
pp. 381-389 ◽  
Author(s):  
Yu. A. ZALIZNYAK ◽  
A. I. YAKIMENKO ◽  
V. M. LASHKIN
Keyword(s):  
Temperature Gradient ◽  
Electron Temperature ◽  
Large Scale ◽  
Modulational Instability ◽  
Zonal Flow ◽  
Finite Amplitude ◽  
Small Scale ◽  
Drift Waves ◽  
Zonal Flows ◽  
Electron Temperature Gradient

AbstractThe generation of large-scale zonal flows by small-scale electrostatic drift waves in electron temperature gradient driven turbulence model is considered. The generation mechanism is based on the modulational instability of a finite amplitude monochromatic drift wave. The threshold and growth rate of the instability as well as the optimal spatial scale of zonal flow are obtained.

Nonlinear generation of zonal flows by drift waves

2001 ◽  
Vol 289 (4-5) ◽  
pp. 219-224 ◽  
Author(s):  
D Jovanović ◽  
P.K Shukla
Keyword(s):  
Drift Waves ◽  
Zonal Flows ◽  
Nonlinear Generation

scholarly journals Coexistence of Zonal Flows and Drift-Waves in a Cylindrical Magnetized Plasma

2008 ◽  
Vol 77 (11) ◽  
pp. 114501 ◽  
Author(s):  
Yoshihiko Nagashima ◽  
Sanae-I. Itoh ◽  
Shunjiro Shinohara ◽  
Masayuki Fukao ◽  
Akihide Fujisawa ◽  
...  
Keyword(s):  
Magnetized Plasma ◽  
Drift Waves ◽  
Zonal Flows

Dust acoustic and drift waves in a non-Maxwellian dusty plasma with dust charge fluctuation

2015 ◽  
Vol 81 (6) ◽  
Author(s):  
U. Zakir ◽  
Q. Haque ◽  
N. Imtiaz ◽  
A. Qamar
Keyword(s):  
Dusty Plasma ◽  
Dust Particles ◽  
Drift Waves ◽  
Physical Parameters ◽  
Charge Fluctuation ◽  
Plasma Parameters ◽  
Dust Charge ◽  
Electrons And Ions ◽  
Dust Acoustic ◽  
Dust Charge Fluctuation

The properties of dust acoustic and drift waves are investigated in a charge varying magnetized dusty plasma. The plasma is composed of non-thermal electrons and ions with dynamic dust particles. The mathematical expression which describes the dust charge fluctuation is obtained using ${\it\kappa}$-distribution for both the electrons and ions. A dispersion relation is derived and analysed numerically by choosing space plasma parameters. It is found that the inclusion of variable dust charge along with the non-thermal effects of electrons and ions significantly affect linear/nonlinear properties of the dust acoustic and dust drift waves. The effects of different physical parameters including spectral index (${\it\kappa}$), dust charge number ($Z_{d}$), electron density ($n_{e}$) and ion temperature ($T_{i}$) on the wave dispersion and instability are presented. It is found that the presence of the non-thermal electron and ion populations reduce the growth rate of the instability which arises due to the dust charging effect. In addition, the nonlinear vortex solutions are also obtained. For illustration, the results are analysed by using the dusty plasma parameters of Saturn’s magnetosphere.

Generation of zonal flows by electrostatic drift waves in electron-positron-ion plasmas

2010 ◽  
Vol 17 (2) ◽  
pp. 022304 ◽  
Author(s):  
T. D. Kaladze ◽  
M. Shad ◽  
L. V. Tsamalashvili
Keyword(s):  
Drift Waves ◽  
Zonal Flows ◽  
Electron Positron

Drift dissipative instability in a dusty plasma: Do dust particles reduce intensity of density irregularities in the lower ionosphere?

2015 ◽  
Vol 93 (4) ◽  
pp. 466-468
Author(s):  
Shobha Surve ◽  
V.H. Kulkarni
Keyword(s):  
Electron Density ◽  
Dusty Plasma ◽  
Dust Particle ◽  
Growth Rates ◽  
Lower Ionosphere ◽  
Dust Particles ◽  
Drift Waves ◽  
E Region ◽  
Dissipative Instability

We re-analyzed the effect of loss of electrons and hence the reduction in electron density on drift dissipative instability. We find that the growth rates of the drift waves decrease. The analysis suggests that the presence of dust particle, if they are responsible for the loss of background electrons, will reduce the intensity of density irregularities in the E region of the ionosphere.

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