Exponential growth of an unstable l=1 diocotron mode for a hollow electron column in a warm-fluid model
- 1 March 1993
- journal article
- research article
- Published by AIP Publishing in Physics of Fluids B: Plasma Physics
- Vol. 5 (3) , 669-673
- https://doi.org/10.1063/1.860512
Abstract
Numerical investigations of a warm‐fluid model with an isothermal equation of state for the perpendicular dynamics of an axisymmetric, magnetically confined pure electron plasma predict an exponentially unstable, l=1, diocotron mode for hollow density profiles. The unstable mode can be identified with a stable, nonsmooth mode that exists in cold drift models but which is destabilized by finite temperature effects. The unstable mode has many properties similar to the experimental results reported by Driscoll [Phys. Rev. Lett. 64, 645 (1990)].Keywords
This publication has 6 references indexed in Scilit:
- Effects of electrostatic confinement fields and finite gyroradius on an instability of hollow electron columnsPhysics of Fluids B: Plasma Physics, 1992
- The effect of externally applied oscillating electric fields on the l=1 and l=2 diocotron modes in non-neutral plasmasPhysics of Fluids B: Plasma Physics, 1990
- Observation of an unstablel=1diocotron mode on a hollow electron columnPhysical Review Letters, 1990
- Algebraic instability of hollow electron columns and cylindrical vorticesPhysical Review Letters, 1990
- Role of Landau Damping in Crossed-Field Electron Beams and Inviscid Shear FlowPhysics of Fluids, 1970
- Two New Results in Cylindrical Diocotron TheoryPhysics of Fluids, 1968