LH wave absorption by mode conversion near ion cyclotron harmonics
Conference
·
OSTI ID:6222491
Numerical studies of the dispersion relation near the lower-hybrid frequency in an inhomogeneous plasma (..delta.. n, ..delta.. T, ..delta.. B) show that portions of an incident lower-hybrid wave spectrum undergo successive but partial mode conversions to warm-plasma waves in the presence of ion cyclotron harmonics. Wave absorption beyond the first mode conversion occurs near an ion cyclotron harmonic where ion Landau damping is enhanced. A second-order dispersion relation numerically in good agreement with the full dispersion relation in the mode conversion region is derived using the condition par. delta D/par. delta k = 0. The mode conversion efficiency at each confluence is evaluated by solving the corresponding differential equation.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). Plasma Fusion Center
- DOE Contract Number:
- AC02-78ET51013
- OSTI ID:
- 6222491
- Report Number(s):
- DOE/ET/51013-10; CONF-810214-8; ON: DE81029434
- Country of Publication:
- United States
- Language:
- English
Similar Records
Propagation and collisionless absorption of linearly converted lower hybrid plasma waves
Mode conversion and absorption of lower hybrid waves in inhomogeneous magnetic fields
Mode conversion of lower hybrid waves at high ion cyclotron harmonics
Journal Article
·
Fri Oct 31 23:00:00 EST 1975
· Phys. Fluids, v. 18, no. 11, pp. 1524-1532
·
OSTI ID:4126257
Mode conversion and absorption of lower hybrid waves in inhomogeneous magnetic fields
Journal Article
·
Fri Jul 01 00:00:00 EDT 1988
· Phys. Fluids; (United States)
·
OSTI ID:7231209
Mode conversion of lower hybrid waves at high ion cyclotron harmonics
Journal Article
·
Mon Jul 01 00:00:00 EDT 1985
· AIP Conf. Proc.; (United States)
·
OSTI ID:6013160
Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
ABSORPTION
CLOSED PLASMA DEVICES
CYCLOTRON FREQUENCY
DISPERSION RELATIONS
EFFICIENCY
HEATING
HIGH-FREQUENCY HEATING
HYBRID RESONANCE
INHOMOGENEOUS PLASMA
PLASMA
PLASMA HEATING
RESONANCE
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
ABSORPTION
CLOSED PLASMA DEVICES
CYCLOTRON FREQUENCY
DISPERSION RELATIONS
EFFICIENCY
HEATING
HIGH-FREQUENCY HEATING
HYBRID RESONANCE
INHOMOGENEOUS PLASMA
PLASMA
PLASMA HEATING
RESONANCE
THERMONUCLEAR DEVICES
TOKAMAK DEVICES