Quasi-linear theory of shear Alfvén waves driven by a bump-on-tail distribution
Abstract
A magnetized plasma in a shearless slab geometry is considered. The plasma ions have a distribution, in velocity space, of the bump-on-tail type. The plasma is assumed to be spatially homogeneous. Shear Alfvén waves can be destabilized via wave-ion resonances near the bump. A quasi-linear theory describing the saturation of the unstable wave is developed for the case where a single mode description is appropriate.
- Publication:
-
Physics of Fluids
- Pub Date:
- March 1980
- DOI:
- 10.1063/1.863006
- Bibcode:
- 1980PhFl...23..573M
- Keywords:
-
- Ion Distribution;
- Magnetohydrodynamic Shear Heating;
- Magnetohydrodynamic Waves;
- Plasma Slabs;
- Distribution Functions;
- Equilibrium Equations;
- Ionized Gases;
- Landau Damping;
- Linear Equations;
- Magnetohydrodynamic Stability;
- Plasma Oscillations;
- Plasma Physics