Recurrence Analysis of Turbulent Fluctuations in Magnetically Confined Plasmas

Autor: Zwinglio Guimarães-Filho, Iberê L. Caldas, D. L. Toufen, R. L. Viana, Ivan Cunha Nascimento, Kenneth W Gentle
Rok vydání: 2016
Předmět:
Zdroj: Springer Proceedings in Physics ISBN: 9783319299211
DOI: 10.1007/978-3-319-29922-8_18
Popis: Recurrence plots and their quantification became a modern tool in nonlinear data analysis, currently being used in a myriad of scientific disciplines, a diversity that characterizes the Recurrence Plot Workshop since its beginning. In this work we review some applications of recurrence quantification analysis to data analysis in a fusion plasma, namely turbulent fluctuations in the plasma edge of Tokamak Chauffage Alfven Bresilien tokamak, which is a magnetic confinement plasma machine. A similar analysis was performed in a low-density plasma device called Texas Helimak (University of Texas at Austin). Our results point out that the deterministic content of the fluctuations tends to increase as we approach the plasma edge, indicating a concentration of the recurrences therein. This favours the use of fluid models to describe the physics of the plasma edge turbulence.
Databáze: OpenAIRE