Electromagnetic effects on the self-modulation of nonlinear lower hybrid waves

Journal Article · Tue Mar 01 04:00:00 EST 1983 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.864185· OSTI ID:6482716

Hsu, P; Kuehl, H H

Electromagnetic effects on the self-modulation of nonlinear lower hybrid waves in an inhomogeneous plasma are studied for both broad and narrow spectrum excitations. For broad spectrum excitation, the complex modified Korteweg--de Vries equation is modified by two additional terms due to the electromagnetic correction and inhomogeneity. Numerical solutions of this equation for typical tokamak parameters show that these terms suppress soliton formation. For narrow spectrum excitation, the electromagnetic correction produces an additional dispersive term in the differential equation governing the wave envelope. This term opposes thermal dispersion, resulting in significant self-modulation. Numerical solutions show constriction and splitting of the envelope as well as spreading of the Fourier spectrum.

• Research Organization: University of Southern California, Los Angeles, California 90007
• OSTI ID: 6482716
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 26:3; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
BASIC INTERACTIONS
CLOSED PLASMA DEVICES
DIFFERENTIAL EQUATIONS
ELECTROMAGNETIC INTERACTIONS
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EXCITATION
INHIBITION
INHOMOGENEOUS PLASMA
INTERACTIONS
KORTEWEG-DE VRIES EQUATION
MAGNETIC FIELDS
MODIFICATIONS
MODULATION
NONLINEAR PROBLEMS
NUMERICAL SOLUTION
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
PLASMA WAVES
QUASI PARTICLES
SLABS
SOLITONS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TWO-DIMENSIONAL CALCULATIONS
WAVEGUIDES