Drift-wave eigenmodes in toroidal plasmas

Journal Article · Fri Oct 31 23:00:00 EST 1980 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.862907· OSTI ID:7092759

Chen, L; Cheng, C Z

The eigenmode equation describing ballooning drift waves in toroidal plasmas is investigated both analytically and numerically. Two branches of eigenmodes are identified. One is slab-like and the other is a new branch induced by finite toroidal coupling. The slab-like eigenmodes correspond to unbounded states and experience finite shear damping. The toroidicity-induced eigenmodes, however, can become local quasi-bounded states with negligible shear damping. Both branches of eigenmodes may exist simultaneously. The corresponding analytical theories are also presented.

• Research Organization: Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08544
• OSTI ID: 7092759
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 23:11; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107 -- Fusion Energy-- Plasma Research-- Instabilities
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ANALYTICAL SOLUTION
ANNULAR SPACE
BALLOONING INSTABILITY
BOUNDARY CONDITIONS
CONFIGURATION
DAMPING
DIFFERENTIAL EQUATIONS
EQUATIONS
INSTABILITY
LANDAU DAMPING
MAGNETIC FIELDS
NORMAL-MODE ANALYSIS
NUMERICAL SOLUTION
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA WAVES
SHEAR
SPACE
TOROIDAL CONFIGURATION
WKB APPROXIMATION