Analytical Theory of Drift Waves and Drift-Alfvén Waves in Tokamaks
- 12 March 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 42 (11), 708-711
- https://doi.org/10.1103/PhysRevLett.42.708
Abstract
The collisionless drift wave and drift-Alfvén wave instabilities in a sheared magnetic field are considered using the complex transformation technique of Antonsen. It is shown that no unstable bounded eigensolutions for the finite- radial eigenmode equations exist. We also present a more general technique based on the wave-flux conservation and find, furthermore, that the convective amplification of drift waves in the electrostatic limit can be anomalously large, which could lead to enhanced transport in tokamaks.
Keywords
This publication has 8 references indexed in Scilit:
- Theory of finite-β-modified drift wavesNuclear Fusion, 1978
- Theory of Universal Eigenmodes in a Sheared Magnetic FieldPhysical Review Letters, 1978
- Drift Alfvén Waves in TokamaksPhysical Review Letters, 1978
- Stability of Bound Eigenmode Solutions for the Collisionless Universal InstabilityPhysical Review Letters, 1978
- "Absolute Universal Instability" Is Not UniversalPhysical Review Letters, 1978
- Drift-Modified Tearing Instabilities Due to Trapped ElectronsPhysical Review Letters, 1977
- Kinetic theory of tearing instabilitiesPhysics of Fluids, 1977
- Stability of a finite-β inhomogeneous plasma in a sheared magnetic fieldNuclear Fusion, 1974