Fast-wave current drive above the slow-wave density limit

Journal Article · Mon Mar 12 00:00:00 EST 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.1258· OSTI ID:6896898

Sheehan, D P; McWilliams, R; Wolf, N S; Edrich, D ^[1]

---

1. Department of Physics, University of California, Irvine, California 92717 (USA)

Fast-wave and slow-wave current drive near the mean gyrofrequency were compared in the Irvine Torus. The slow-wave current drive density limit observation was extended by an order of magnitude in wave frequency compared to previous tokamak results. At low densities, the fast-wave antenna was observed to launch slow waves which drove currents that suffered from the current drive density limit identical to waves launched from the slow-wave antenna. At higher densities, current was driven by the fast-wave antenna while none was driven by the slow-wave antenna.

• OSTI ID: 6896898
• Journal Information: Physical Review Letters; (USA), Vol. 64:11; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLD PLASMA
ANTENNAS
PLASMA DIAGNOSTICS
LANGMUIR PROBE
TORI
PLASMA DENSITY
CORRELATIONS
CURRENT-DRIVE HEATING
ELECTRON TEMPERATURE
GYROFREQUENCY
HELIUM
INCIDENCE ANGLE
LOWER HYBRID HEATING
PLASMA PRODUCTION
ELECTRIC HEATING
ELECTRIC PROBES
ELECTRICAL EQUIPMENT
ELEMENTS
EQUIPMENT
FLUIDS
GASES
HEATING
HIGH-FREQUENCY HEATING
JOULE HEATING
NONMETALS
PLASMA
PLASMA HEATING
PROBES
RARE GASES
RESISTANCE HEATING
700101* - Fusion Energy- Plasma Research- Confinement
Heating
& Production
700108 - Fusion Energy- Plasma Research- Wave Phenomena
700102 - Fusion Energy- Plasma Research- Diagnostics