d-/sup 3/ He reaction measurements during fast wave minority heating in the PLT tokamak experiment
Time- and energy-resolved d-/sup 3/He fusion reactions have been measured to infer the energy of the d/sup +/ or He/sup + +/ minority ions heated near their cyclotron frequency by the magnetosonic fast wave. The average energy of the reacting /sup 3/He ions during /sup 3/He minority heating is in the range of 100--400 keV, as deduced from the magnitude of the reaction rate, its decay time, and the energy spread of the proton reaction products. The observed reaction rate and its scaling with wave power and electron density and temperature are in qualitative agreement with a radial reaction rate model using the minority distribution predicted from quasilinear velocity space diffusion. Oscillations in the reaction rate are observed concurrent with sawtooth and m = 2 magnetohydrodynamic activity in the plasma.
- Research Organization:
- Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08540
- OSTI ID:
- 5975276
- Journal Information:
- Phys. Fluids; (United States), Vol. 26:7
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fast wave ICRF minority heating experiments on the Alcator C tokamak
Tritium minority heating with mode conversion of fast waves
Related Subjects
DEUTERONS
FUSION REACTIONS
HELIUM IONS
PLASMA DIAGNOSTICS
PROTON PROBES
PLT DEVICES
PLASMA HEATING
CYCLOTRON FREQUENCY
CYCLOTRON RESONANCE
ELECTRON TEMPERATURE
ENERGY RESOLUTION
IONS
KEV RANGE 100-1000
PLASMA DENSITY
TIME RESOLUTION
TOKAMAK DEVICES
CHARGED PARTICLES
CLOSED PLASMA DEVICES
ENERGY RANGE
HEATING
KEV RANGE
NUCLEAR REACTIONS
PROBES
RESOLUTION
RESONANCE
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TIMING PROPERTIES
TOKAMAK TYPE REACTORS
700102* - Fusion Energy- Plasma Research- Diagnostics
700101 - Fusion Energy- Plasma Research- Confinement
Heating
& Production