Fluctuations in a Tokamak Plasma.
Abstract
An experimental investigation of low frequency floating potential fluctuations in a research Tokamak plasma using two spatially separated electrostatic probes was performed. The spectra, correlation length, and the phase velocity of the fluctuations in both the radial and azimuthal direction were determined. The propagation velocity in the toroidal direction was also measured and was found to be in the direction of electron current flow. The waves traveled azimuthally in the ion diamagnetic drift direction, even after the usual E x B rotation was taken into account. The electron density fluctuations associated with these oscillations were large. The spectra were found to have regularly spaced peaks which seemed to be related to specific azimuthal modes.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- May 1978
- Bibcode:
- 1978PhDT........28K
- Keywords:
-
- Physics: Fluid and Plasma; Energy;
- Plasma Dynamics;
- Tokamak Devices;
- Electrostatic Probes;
- Phase Velocity;
- Spectrum Analysis;
- Variations;
- Plasma Physics