Impurity effects on ion-drift-wave eigenmodes in a sheared magnetic field

Journal Article · Tue Jan 01 04:00:00 EST 1980 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.862835· OSTI ID:5753114

Tang, W M; White, R B; Guzdar, P N

The stability of ion-drift-wave eigenmodes in a slab geometry with a sheared magnetic field is investigated. It is found that in contrast to the case of universal and dissipative electron-drift-wave eigenmodes, unstable impurity-driven normal modes can appear if specific conditions are satisfied. In addition, the influence of impurities on unstable ion-temperature-gradient-driven drift eigenmodes is also studied. It is found that, if their density profile is inwardly peaked, the impurities can exert a strong stabilizing influence on these modes.

• Research Organization: Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08544
• OSTI ID: 5753114
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 23:1; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
CONFIGURATION
DAMPING
DIFFERENTIAL EQUATIONS
DISPERSION RELATIONS
DRIFT INSTABILITY
EQUATIONS
IMPURITIES
INSTABILITY
ION WAVES
LANDAU DAMPING
MAGNETIC FIELDS
NONLOCAL POTENTIAL
NORMAL-MODE ANALYSIS
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
PLASMA WAVES
POTENTIALS
SHEAR
SLABS
TEMPERATURE GRADIENTS