Sticky islands in stochastic webs and anomalous chaotic cross-field particle transport by E×B electron drift instability
| Autor: | Yves Elskens, Nicolas Lemoine, Xavier Leoncini, Debraj Mandal, F. Doveil |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
General Mathematics Applied Mathematics Chaotic General Physics and Astronomy Statistical and Nonlinear Physics Plasma Low frequency 01 natural sciences Instability Charged particle 010305 fluids & plasmas Phase space 0103 physical sciences Exponent Statistical physics 010301 acoustics Scaling |
| Zdroj: | Chaos, Solitons & Fractals. 145:110810 |
| ISSN: | 0960-0779 |
| DOI: | 10.1016/j.chaos.2021.110810 |
| Popis: | The E × B electron drift instability, present in many plasma devices, is an important agent in cross-field particle transport. In presence of a resulting low frequency electrostatic wave, the motion of a charged particle becomes chaotic and generates a stochastic web in phase space. We define a scaling exponent to characterise transport in phase space and we show that the transport is anomalous, of super-diffusive type. Given the values of the model parameters, the trajectories stick to different kinds of islands in phase space, and their different sticking time power-law statistics generate successive regimes of the super-diffusive transport. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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