Evidence of low-dimensional chaos in magnetized plasma turbulence
Plasma Physics
2009-11-13 v2
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.
Keywords
Cite
@article{arxiv.0801.3151,
title = {Evidence of low-dimensional chaos in magnetized plasma turbulence},
author = {Tatjana Zivkovic and Kristoffer Rypdal},
journal= {arXiv preprint arXiv:0801.3151},
year = {2009}
}