Type I intermittency related to the spatiotemporal dynamics of double layers and ion-acoustic instabilities in plasma

Chiriac, S.; Dimitriu, D. G.; Sanduloviciu, M.
July 2007
Physics of Plasmas;Jul2007, Vol. 14 Issue 7, p072309
Academic Journal
Anodic double layer instabilities occur in low-temperature diffusion filament-type discharge plasma by applying a certain positive bias with respect to the plasma potential to an additional electrode. Periodic nonlinear regimes, characterized by proper dynamics of double layers, are sustained if excitation and ionization rates in front of the electrode reach the value for which current limitation effects appear in the static current-voltage characteristic. It was experimentally shown that under specific experimental conditions these ordered spatiotemporal phenomena can evolve into chaotic states by type I intermittency. This transition was verified by the evolution of time series, fast Fourier transform amplitude plots, three–dimensional reconstructed state spaces, power laws, and flickering phenomena spectrum, as well as by the return map and tangent bifurcation.


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