Kinetic theory of the electromagnetic drift modes driven by pressure gradients

Journal Article · Tue Oct 01 00:00:00 EDT 1985 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.865146· OSTI ID:5366064

Horton, W; Sedlak, J E; Choi, D; Hong, B G

Kinetic equations for the electromagnetic drift modes are derived and analyzed for the stability of tokamaks in the local approximation. In the dissipationless, hydrodynamic limit, the fifth-order polynomial dispersion relation previously studied is recovered. The kinetic velocity space integrals in the ion dynamics are shown to modify the five principal modes of oscillation and their polarizations. It is shown that in kinetic stability theory the critical plasma pressure defined in magnetohydrodynamic theory determines a transition from microinstability to macroinstability.

• Research Organization: Institute for Fusion Studies, University of Texas at Austin, Austin, Texas 78712
• OSTI ID: 5366064
• Journal Information: Phys. Fluids; (United States), Vol. 28:10
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DRIFT INSTABILITY
ELECTROMAGNETIC RADIATION
PLASMA
PRESSURE GRADIENTS
TOKAMAK DEVICES
PLASMA MICROINSTABILITIES
DISPERSION RELATIONS
INTEGRALS
ION DRIFT
KINETIC EQUATIONS
MODIFICATIONS
PLASMA PRESSURE
POLARIZATION
CLOSED PLASMA DEVICES
EQUATIONS
INSTABILITY
PLASMA INSTABILITY
RADIATIONS
THERMONUCLEAR DEVICES
700108* - Fusion Energy- Plasma Research- Wave Phenomena
700107 - Fusion Energy- Plasma Research- Instabilities