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arXiv · 0801.3151

Evidence of low-dimensional chaos in magnetized plasma turbulence

Tatjana Zivkovic·Kristoffer Rypdal
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Abstract

We analyze probe data obtained from a toroidal magnetized plasma configuration suitable for studies of low-frequency gradient-driven instabilities. These instabilities give rise to field-aligned convection rolls analogous to Rayleigh-Benard cells in neutral fluids, and may theoretically develop similar routes to chaos. When using mean-field dimension analysis, we observe low dimensionality, but this could originate from either low-dimensional chaos, periodicity or quasi-periodicity. Therefore, we apply recurrence plot analysis as well as estimation of the largest Lyapunov exponent. These analyses provide evidence of low-dimensional chaos, in agreement with theoretical predictions.

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Tatjana Zivkovic, Kristoffer Rypdal. 2008-03-10. Evidence of low-dimensional chaos in magnetized plasma turbulence. https://doi.org/10.1140/epjst%2Fe2008-00841-5

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