Abstract
The control of nonlinear drift waves in a magnetized plasmas column has been investigated. The studies are based on the Hasegawa–Mima model, which is solved on a disk domain with radial inhomogeneity of the plasma density. The system is forced by a rotating potential with varying frequency defined on the boundary. To excite and control the waves we apply the autoresonant effect, taking place when the amplitude of the forcing exceeds a threshold value and the waves are phase-locked with the forcing. We demonstrate that the autoresonant approach is applicable for excitation of a range of steady nonlinear waves of the lowest azimuthal mode numbers and for controlling their amplitudes and phases. We also demonstrate the excitation of zonal flows (m = 0 modes), which are controlled via the forced modes.
Original language | English |
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Article number | 034001 |
Journal | Physica Scripta |
Volume | 92 |
Issue number | 3 |
Number of pages | 9 |
ISSN | 0031-8949 |
DOIs | |
Publication status | Published - 2017 |
Keywords
- Autoresonance
- Drift waves
- Rossby waves
- Flow control