Nonlinear evolution of lower hybrid waves
The two-dimensional steady-state distribution of lower hybrid waves is governed by the complex modified Korteweg-deVries equation. The equation is studied numerically. Two types of solitary waves can arise. One is a constant phase pulse, whereas the other is an envelope solitary wave. These solitary waves are not solitons. The occurrence of the constant phase pulses points to the possibility of internal reflections due to scattering off ponderomotive density fluctuations. This necessitates solving the equation as a boundary value problem. With typical fields for lower hybrid heating of a tokamak, it is found that large reflections can occur close to the edge of the plasma.
- Research Organization:
- Princeton Univ., N.J. (USA). Plasma Physics Lab.
- DOE Contract Number:
- EY-76-C-02-3073
- OSTI ID:
- 6812854
- Report Number(s):
- PPPL-1452
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
CLOSED PLASMA DEVICES
DIFFERENTIAL EQUATIONS
ELECTROMAGNETIC RADIATION
EQUATIONS
HEATING
HIGH-FREQUENCY HEATING
HYBRID RESONANCE
KORTEWEG-DE VRIES EQUATION
PLASMA HEATING
QUASI PARTICLES
RADIATIONS
RESONANCE
SOLITONS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TWO-DIMENSIONAL CALCULATIONS
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
CLOSED PLASMA DEVICES
DIFFERENTIAL EQUATIONS
ELECTROMAGNETIC RADIATION
EQUATIONS
HEATING
HIGH-FREQUENCY HEATING
HYBRID RESONANCE
KORTEWEG-DE VRIES EQUATION
PLASMA HEATING
QUASI PARTICLES
RADIATIONS
RESONANCE
SOLITONS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TWO-DIMENSIONAL CALCULATIONS