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Author Mitra, Vramori ♦ Sarma, Bornali ♦ Sarma, Arun ♦ Janaki, M. S. ♦ Sekar Iyengar, A. N. ♦ Marwan, Norbert ♦ Kurths, Jürgen
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ ELECTRIC POTENTIAL ♦ ENTROPY ♦ FLUCTUATIONS ♦ GLOW DISCHARGES ♦ MAGNETIC FIELDS ♦ NONLINEAR PROBLEMS ♦ PLASMA ♦ POTENTIALS
Abstract Recurrence is an ubiquitous feature which provides deep insights into the dynamics of real dynamical systems. A suitable tool for investigating recurrences is recurrence quantification analysis (RQA). It allows, e.g., the detection of regime transitions with respect to varying control parameters. We investigate the complexity of different coexisting nonlinear dynamical regimes of the plasma floating potential fluctuations at different magnetic fields and discharge voltages by using recurrence quantification variables, in particular, DET, L{sub max}, and Entropy. The recurrence analysis reveals that the predictability of the system strongly depends on discharge voltage. Furthermore, the persistent behaviour of the plasma time series is characterized by the Detrended fluctuation analysis technique to explore the complexity in terms of long range correlation. The enhancement of the discharge voltage at constant magnetic field increases the nonlinear correlations; hence, the complexity of the system decreases, which corroborates the RQA analysis.
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-06-15
Publisher Place United States
Journal Physics of Plasmas
Volume Number 23
Issue Number 6


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