Propagations of drift waves in toroidal plasma systems
Drift wave patterns in toroidal plasmas are studied. The dispersion relation was simplified to retain both the shear and the toroidal coupling effects. Since the dispersion relation does not depend on the toroidal angle, {phi}, the dispersion is solved in the two- dimensional space made up with minor radius and poloidal angle. The dispersion relation can be reduced into second-order, partial differential equations of a hyperbolic type. The one-dimensional convective mode analysis, which was originated in the 1960's, was extended into the two-dimensional analysis. Depending on the strength of the magnetic shear, one can obtain either the convective or the localized solutions. The results show that the plasma is expected to be unstable for large azimuthal mode number and that the plasma instability tends to be more stabilized for large mass ions. 8 refs., 3 figs., 1 tab.
- Research Organization:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 6894217
- Report Number(s):
- PPPL-2692; ON: DE90010279; TRN: 90-014501
- Country of Publication:
- United States
- Language:
- English
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PLASMA DRIFT
WAVE PROPAGATION
DISPERSION RELATIONS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA INSTABILITY
SHEAR
TOROIDAL CONFIGURATION
ANNULAR SPACE
CLOSED CONFIGURATIONS
CONFIGURATION
DIFFERENTIAL EQUATIONS
EQUATIONS
INSTABILITY
MAGNETIC FIELD CONFIGURATIONS
SPACE
700108* - Fusion Energy- Plasma Research- Wave Phenomena