Low frequency oscillations and chaos in plasmas
- Institut fuer Experimentalphysik, Christian-Albrechts-Universitaet zu Kiel D-24098 Kiel (Germany)
Regular and chaotic low frequency oscillations are studied in thermionic discharges. A model for relaxation oscillations is presented that is based on particle-in-cell simulations and probe measurements. The synchronization of the oscillations by an external driver and the period-doubling route to chaos can be understood in terms of a periodically forced van der Pol oscillator. The stabilization of unstable periodic orbits by the Ott-Grebogy-Yorke technique is demonstrated. Spatio-temporal chaos is found at the onset of drift-wave turbulence. Here the transition to chaos involves the Ruelle-Takens-Newhouse scenario with a sequence of Hopf bifurcations. The spatio-temporal evolution of interacting drift-waves is studied with a novel 64-probe array. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 285329
- Report Number(s):
- CONF-950749--
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 363; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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