Recurrence in plasma edge turbulence

M S  Baptista; I L  Caldas; M V A P  Heller; A A  Ferreira; R D  Bengtson; J  Stockel

doi:10.1063/1.1401117

Recurrence in plasma edge turbulence

M S Baptista, I L Caldas, M V A P Heller, A A Ferreira, R D Bengtson, J Stockel

Physics

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Common statistics of turbulent electrostatic fluctuations observed at the plasma edge and scrape-off layer are analyzed in three tokamak devices that have different configurations. The statistics of experimental data collected using fixed sampling time is the same than the statistics of the time for which the oscillation return to a specified reference interval of values. This observation, in addition to the finding of power-scaling laws for some average quantities with respect to either the sampling time or the size of the reference interval, suggests that turbulence on tokamaks have recurrent characteristics, typical of a recurrent chaotic low-dimensional system. Furthermore, the first Poincare recurrence time and other dynamical tools are used to simulate the mentioned fluctuation statistical properties. (C) 2001 American Institute of Physics.

Original language	English
Pages (from-to)	4455-4462
Number of pages	8
Journal	Physics of Plasmas
Volume	8
Issue number	10
DOIs	https://doi.org/10.1063/1.1401117
Publication status	Published - Oct 2001

Keywords

Brazilian Tokamak TBR
Anomalous transport
Drift waves
Fluctuations
Systems
Dimension
Dynamics
Behavior

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10.1063/1.1401117

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title = "Recurrence in plasma edge turbulence",

abstract = "Common statistics of turbulent electrostatic fluctuations observed at the plasma edge and scrape-off layer are analyzed in three tokamak devices that have different configurations. The statistics of experimental data collected using fixed sampling time is the same than the statistics of the time for which the oscillation return to a specified reference interval of values. This observation, in addition to the finding of power-scaling laws for some average quantities with respect to either the sampling time or the size of the reference interval, suggests that turbulence on tokamaks have recurrent characteristics, typical of a recurrent chaotic low-dimensional system. Furthermore, the first Poincare recurrence time and other dynamical tools are used to simulate the mentioned fluctuation statistical properties. (C) 2001 American Institute of Physics.",

keywords = "Brazilian Tokamak TBR, Anomalous transport, Drift waves, Fluctuations, Systems, Dimension, Dynamics, Behavior",

author = "Baptista, {M S} and Caldas, {I L} and Heller, {M V A P} and Ferreira, {A A} and Bengtson, {R D} and J Stockel",

year = "2001",

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doi = "10.1063/1.1401117",

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T1 - Recurrence in plasma edge turbulence

AU - Baptista, M S

AU - Caldas, I L

AU - Heller, M V A P

AU - Ferreira, A A

AU - Bengtson, R D

AU - Stockel, J

PY - 2001/10

Y1 - 2001/10

N2 - Common statistics of turbulent electrostatic fluctuations observed at the plasma edge and scrape-off layer are analyzed in three tokamak devices that have different configurations. The statistics of experimental data collected using fixed sampling time is the same than the statistics of the time for which the oscillation return to a specified reference interval of values. This observation, in addition to the finding of power-scaling laws for some average quantities with respect to either the sampling time or the size of the reference interval, suggests that turbulence on tokamaks have recurrent characteristics, typical of a recurrent chaotic low-dimensional system. Furthermore, the first Poincare recurrence time and other dynamical tools are used to simulate the mentioned fluctuation statistical properties. (C) 2001 American Institute of Physics.

AB - Common statistics of turbulent electrostatic fluctuations observed at the plasma edge and scrape-off layer are analyzed in three tokamak devices that have different configurations. The statistics of experimental data collected using fixed sampling time is the same than the statistics of the time for which the oscillation return to a specified reference interval of values. This observation, in addition to the finding of power-scaling laws for some average quantities with respect to either the sampling time or the size of the reference interval, suggests that turbulence on tokamaks have recurrent characteristics, typical of a recurrent chaotic low-dimensional system. Furthermore, the first Poincare recurrence time and other dynamical tools are used to simulate the mentioned fluctuation statistical properties. (C) 2001 American Institute of Physics.

KW - Brazilian Tokamak TBR

KW - Anomalous transport

KW - Drift waves

KW - Fluctuations

KW - Systems

KW - Dimension

KW - Dynamics

KW - Behavior

U2 - 10.1063/1.1401117

DO - 10.1063/1.1401117

M3 - Article

SN - 1070-664X

VL - 8

SP - 4455

EP - 4462

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 10

ER -

Recurrence in plasma edge turbulence

Abstract

Keywords

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