ON AMPLIFICATION OF ION-ACOUSTIC MODE IN INHOMOGENEOUS PLASMA IN PRESENCE OF DRIFT WAVE TURBULENCE

2019 ◽  
Vol 113 (1) ◽  
pp. 27-46
Author(s):  
P. N. Deka ◽  
J. K. Deka
Keyword(s):  
Inhomogeneous Plasma ◽  
Acoustic Mode ◽  
Wave Turbulence ◽  
Drift Wave Turbulence ◽  
Drift Wave ◽  
Ion Acoustic

Excitation of geodesic acoustic mode continuum by drift wave turbulence

2012 ◽  
Vol 78 (6) ◽  
pp. 651-655 ◽  
Author(s):  
JUN YU ◽  
J. Q. DONG ◽  
X. X. LI ◽  
D. DU ◽  
X. Y. GONG
Keyword(s):  
Growth Rate ◽  
Acoustic Mode ◽  
Kinetic Approach ◽  
Wave Turbulence ◽  
Ion Temperature ◽  
Drift Wave Turbulence ◽  
Acoustic Modes ◽  
Drift Wave ◽  
Radial Structure ◽  
Geodesic Acoustic Mode

AbstractExcitation of the geodesic acoustic mode continuum by drift wave turbulence is studied using the wave kinetic approach. For a model profile of weak non-uniform ion temperature, the forms of growth rate and radial structure of geodesic acoustic modes are obtained analytically. The growth rate is analyzed for several conditions for present-day tokamaks and compared with that for uniform ion temperature, as well as that given by the coherent mode approach for non-uniform ion temperature.

Drift wave turbulence of a radially inhomogeneous plasma

1991 ◽  
Vol 157 (2-3) ◽  
pp. 141-145 ◽  
Author(s):  
D.V. Chibisov ◽  
V.S. Mikhailenko ◽  
K.N. Stepanov
Keyword(s):  
Inhomogeneous Plasma ◽  
Wave Turbulence ◽  
Drift Wave Turbulence ◽  
Drift Wave ◽  
Radially Inhomogeneous

On unstable electromagnetic radiation through nonlinear wave–particle interactions in presence of drift wave turbulence

2012 ◽  
Vol 78 (5) ◽  
pp. 515-524 ◽  
Author(s):  
P. N. DEKA ◽  
A. BORGOHAIN
Keyword(s):  
Electromagnetic Radiation ◽  
Nonlinear Wave ◽  
Inhomogeneous Plasma ◽  
Wave Turbulence ◽  
Particle Interactions ◽  
Drift Wave Turbulence ◽  
Drift Wave ◽  
Nonlinear Dispersion Relation ◽  
The Common ◽  
Wave Particle Interactions

AbstractA study on the generation of unstable electromagnetic wave through nonlinear wave–particle interactions in an inhomogeneous plasma has been presented. Drift wave turbulence, which is one of the common features of inhomogeneous plasma, is found to be strongly in phase relation with thermal particles. The plasma particles, accelerated by drift wave turbulence field, may transfer their energy to electromagnetic O-mode through a modulated field. This process has been described by Vlasov Maxwell system of equations. From the nonlinear dispersion relation for O-mode the growth rate has been estimated. It has been observed that growth of unstable O-mode may predict magnetospheric electromagnetic radiation phenomena.

Theory of electric‐field curvature effects on long‐wavelength drift wave turbulence

1994 ◽  
Vol 1 (5) ◽  
pp. 1142-1153 ◽  
Author(s):  
K. L. Sidikman ◽  
B. A. Carreras ◽  
P. H. Diamond ◽  
L. Garcia
Keyword(s):  
Electric Field ◽  
Wave Turbulence ◽  
Long Wavelength ◽  
Drift Wave Turbulence ◽  
Curvature Effects ◽  
Drift Wave ◽  
Field Curvature
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