Dynamical study and control of drift waves in a magnetized laboratory plasma
| ISSN: |
1434-6079
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| Keywords: |
PACS. 52.35.Kt Drift waves - 52.35.Ra Plasma turbulence - 05.45.-a Nonlinear dynamics and nonlinear dynamical systems
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract: The various dynamical regimes of collisional drift waves in a magnetized plasma column are experimentally studied. These unstable low-frequency electrostatic waves are related with strong modulations of the ion and electron density. The angular velocity of the rotating plasma column is the control parameter of the dynamics: regular, chaotic and turbulent regimes are obtained. The spatial extension of the system allows for the occurrence of spatiotemporal chaos. The time-delay auto-synchronization method of controlling chaos [K. Pyragas, Phys. Lett. A 170, 421 (1992)] though purely temporal is successfully applied. A numerical study using coupled nonlinear oscillators exhibiting chaos is compared to the experimental results. The control method is tested on this model.
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| Type of Medium: |
Electronic Resource
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| URL: |