Ponderomotive force of the low-frequency field and modulational instability of drift waves

2003 ◽  
Vol 29 (9) ◽  
pp. 768-778
Author(s):  
D. N. Klochkov ◽  
S. I. Popel
Keyword(s):  
Ponderomotive Force ◽  
Modulational Instability ◽  
Low Frequency ◽  
Drift Waves ◽  
Frequency Field

Nonlinear interaction of electrostatic ion-cyclotron and drift waves in plasmas

1996 ◽  
Vol 56 (1) ◽  
pp. 187-191 ◽  
Author(s):  
O. A. Pokhotelov ◽  
L. Stenflo ◽  
P. K. Shukla
Keyword(s):  
Nonlinear Interaction ◽  
Ponderomotive Force ◽  
Modulational Instability ◽  
Low Frequency ◽  
Drift Waves ◽  
Nonlinear Coupling ◽  
Constant Amplitude ◽  
Ion Cyclotron Waves ◽  
Ion Cyclotron ◽  
Model Equations

Model equations describing the nonlinear coupling between electrostatic ion-cyclotron and drift waves are derived, taking into account the action of the low-frequency ponderomotive force associated with the ion-cyclotron waves. It is found that this interaction is governed by a pair of equations, which can be used for studying the modulational instability of a constant amplitude ion-cyclotron wave as well as the dynamics of nonlinearly coupled ion-cyclotron and drift waves.

Stabilization of collisional drift waves by kinetic Alfvén waves

1992 ◽  
Vol 47 (2) ◽  
pp. 249-260
Author(s):  
C. Kar ◽  
S. K. Majumdar ◽  
A. N. Sekar Iyengar
Keyword(s):  
Mode Coupling ◽  
Ponderomotive Force ◽  
Low Frequency ◽  
Alfven Waves ◽  
Alfven Wave ◽  
Alfvén Waves ◽  
Drift Waves ◽  
Coupling Mechanism ◽  
Plasma Parameters ◽  
Kinetic Alfvén Waves

We have investigated a mode-coupling mechanism between kinetic Alfvén waves and a collisional drift wave in an inhomogeneous cylindrical plasma. Drift waves satisfying the condition k⊥D > 1/r0 (where r0 is the radius of the plasma cylinder) are stabilized by the low-frequency ponderomotive force generated by the kinetic Alfvén waves. For typical plasma parameters and a moderate level of Alfven-wave intensity the stabilization factor is comparable to the destabilization mechanism due to collisions.

Numerical errors in the scalar potential formulations used in low-frequency field problems

2000 ◽  
Vol 36 (5) ◽  
pp. 3096-3098 ◽  
Author(s):  
K. Sivasubramaniam ◽  
S. Salon ◽  
M.V.K. Chari
Keyword(s):  
Scalar Potential ◽  
Low Frequency ◽  
Numerical Errors ◽  
Frequency Field

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.

Quantum dynamics of a millikelvin quasibound KRb complex in a low-frequency field

2019 ◽  
Vol 100 (6) ◽  
Author(s):  
J. S. Molano ◽  
K. D. Pérez ◽  
J. C. Arce ◽  
J. G. López ◽  
M. L. Zambrano
Keyword(s):  
Quantum Dynamics ◽  
Low Frequency ◽  
Frequency Field
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