Alpha-Alfven local dispersion relation and solutions
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-8071 (United States)
The local dispersion relation for shear and kinetic Alfven waves is derived for arbitrary alpha particle distribution functions and analyzed for a set of representative distribution functions. Including both the velocity dependence of magnetic drift and temperature gradients is found to have the most striking effect on the partial growth rate associated with alpha particles for shear Alfven waves. Parallel electric field effects are included and found to make significant changes in the damping associated with electrons and ions. The formalism parallels that used in reduced magnetohydrodynamics, so that it can be readily extended to calculations incorporating more detailed and realistic equilibrium geometry.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 7027957
- Journal Information:
- Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 4:12; ISSN 0899-8221; ISSN PFBPE
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
700330 -- Plasma Kinetics
Transport
& Impurities-- (1992-)
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
ALFVEN WAVES
ALPHA PARTICLES
CHARGED PARTICLES
DISPERSION RELATIONS
DISTRIBUTION FUNCTIONS
EQUATIONS
FLUID MECHANICS
FUNCTIONS
HYDRODYNAMICS
HYDROMAGNETIC WAVES
KINETIC EQUATIONS
MAGNETOHYDRODYNAMICS
MECHANICS
TEMPERATURE GRADIENTS