Three wave mode conversion in the lower hybrid frequency range

Conference · Tue Sep 01 04:00:00 EDT 1987 · AIP Conf. Proc.; (United States)

OSTI ID:7020475

Cho, S; Swanson, D G

It has been shown that propagation of lower hybrid rays sometimes involves cases where three types of waves are coupled through linear mode conversion in the same region of space, namely the cold lower hybrid wave, the warm lower hybrid wave, and an ion Bernstein mode. This three wave mode conversion problem is analyzed in terms of a sixth order differential equation which describes coupling between all branches, and analytic coupling coefficients are found for the case without the local absorption term. The formal solution of this equation shows that a non-trivial amount of the incident cold wave energy goes into an ion Bernstein mode, which is then absorbed by electrons via Landau damping, rather than converting into the warm branch totally, when they are closely coupled in space.

• Research Organization: Auburn University, AL 36849
• OSTI ID: 7020475
• Report Number(s): CONF-870570-
• Conference Information: Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 159:1
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ANALYTICAL SOLUTION
ASYMPTOTIC SOLUTIONS
BERNSTEIN MODE
CHARGED PARTICLES
CONVERSION
COUPLING
CYCLOTRON HARMONICS
DAMPING
DIFFERENTIAL EQUATIONS
DISPERSION RELATIONS
ENERGY CONVERSION
EQUATIONS
HARMONICS
HEATING
HIGH-FREQUENCY HEATING
IONS
LANDAU DAMPING
LOWER HYBRID HEATING
MAGNETIC FIELDS
MATHEMATICAL SPACE
OSCILLATION MODES
OSCILLATIONS
PLASMA
PLASMA HEATING
RIEMANN SPACE
SPACE
TRANSFER MATRIX METHOD