Fast wave dispersion, damping, and electron current drive in the Irvine torus
Fast waves with frequencies near the mean gyrofrequency were excited in a toroidal magnetized plasma. Experimental measurements of wave dispersion were found to be in good agreement with predictions from cold plasma theory. Experimental measurements of wave damping lengths have been made. Measured damping lengths were found to be anomalously short when compared to predictions for electron Landau-damping, transit-time magnetic pumping and collisional damping. Unidirectional fast waves drove steady-state electron currents. Peak efficiencies up to eta = InR/P = 6 x 10/sup -2/ A/W(10/sup 13/ cm/sup -3/)m were observed with up to 14% of the wave energy converted to poloidal magnetic field energy.
- Research Organization:
- University of California, Irvine, CA 92717
- OSTI ID:
- 7184720
- Report Number(s):
- CONF-870570-
- Journal Information:
- AIP Conf. Proc.; (United States), Journal Name: AIP Conf. Proc.; (United States) Vol. 159:1; ISSN APCPC
- Country of Publication:
- United States
- Language:
- English
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700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ANNULAR SPACE
ANTENNAS
COLD PLASMA
COLLISIONAL PLASMA
CONFIGURATION
CONFINEMENT
CONVERSION
CORRELATIONS
CURRENT-DRIVE HEATING
DAMPING
ELECTRIC HEATING
ELECTRICAL EQUIPMENT
ENERGY CONVERSION
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
EXCITATION
GYROFREQUENCY
HEATING
HIGH-FREQUENCY HEATING
JOULE HEATING
LANDAU DAMPING
LOWER HYBRID HEATING
MAGNETIZATION
OPTICAL DISPERSION
PLASMA
PLASMA CONFINEMENT
PLASMA HEATING
RESISTANCE HEATING
SPACE
STEADY-STATE CONDITIONS
TORI
TOROIDAL CONFIGURATION