
doi: 10.2172/5225214
Reported here are the results of two nonstandard heating experiments. In one, the fundamental ECH resonance at either 10.6 or 18 GHz was placed at the usual ring position in an attempt to generate rings solely with fundamental heating; this is the fundamental resonance configuration (FR). In a second experiment, an attempt was made to heat the ring and core separately by forming the ring as above with 10.6 GHz and then heating the core with the fundamental and second harmonic of 28 GHz; this is the separately coupled ring and toroidal core heating configuration (SCRATCH). In both cases, the hot electron annuli were formed and stabilized the core plasma as in the SR experiments. In FR, the rings form at the second harmonic and no significant potential structures were found. In SCRATCH, either a potential well or a potential hill could be formed. In both heating regimes, significant ion heating above that found in standard heating experiments was found.
Electron Rings, Thermonuclear Devices 700101* -- Fusion Energy-- Plasma Research-- Confinement, & Production, Plasma Heating, Heating, Ion Temperature, Elmo Bumpy Torus, Electron Temperature, Elmo Devices, Ecr Heating, 70 Plasma Physics And Fusion Technology, High-Frequency Heating, Magnetic Mirrors, Open Plasma Devices
Electron Rings, Thermonuclear Devices 700101* -- Fusion Energy-- Plasma Research-- Confinement, & Production, Plasma Heating, Heating, Ion Temperature, Elmo Bumpy Torus, Electron Temperature, Elmo Devices, Ecr Heating, 70 Plasma Physics And Fusion Technology, High-Frequency Heating, Magnetic Mirrors, Open Plasma Devices
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