Analysis of chaos in plasma turbulence

T.S. Pedersen; Poul Michelsen; J. Juul Rasmussen

doi:10.1088/0031-8949/1996/T67/006

Analysis of chaos in plasma turbulence

T.S. Pedersen, Poul Michelsen, J. Juul Rasmussen

Research output: Contribution to journal › Journal article › Research

Abstract

A two-dimensional slab model for resistive drift waves in plasmas consisting of two coupled nonlinear partial differential equations for the density perturbation n and the electrostatic potential perturbation phi is investigated. The drift waves are linearly unstable, and a quasi-stationary turbulent state is reached in a finite time, independent of the initial conditions. Different regimes of the turbulent state can be obtained by varying the coupling parameter C, related to the parallel electron dynamics. The turbulence is described by using particle tracking and tools from chaos analysis. The largest Lyapunov exponent lambda(1) is calculated for different values of C to quantify the chaoticity and compared with Lagrangian inverse time scales obtained by tracking virtual fluid particles.

Original language	English
Journal	Physica Scripta
Volume	T67
Pages (from-to)	30-32
ISSN	0281-1847
DOIs	https://doi.org/10.1088/0031-8949/1996/T67/006
Publication status	Published - 1996
Event	International Conference on Complex Dynamics in Spatially Extended Systems - Niels Bohr Instituttet, Copenhagen, Denmark Duration: 26 Sept 1995 → 29 Sept 1995

Conference

Conference	International Conference on Complex Dynamics in Spatially Extended Systems
Location	Niels Bohr Instituttet
Country/Territory	Denmark
City	Copenhagen
Period	26/09/1995 → 29/09/1995
Sponsor	Niels Bohr Institute, Technical University of Denmark

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10.1088/0031-8949/1996/T67/006

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title = "Analysis of chaos in plasma turbulence",

abstract = "A two-dimensional slab model for resistive drift waves in plasmas consisting of two coupled nonlinear partial differential equations for the density perturbation n and the electrostatic potential perturbation phi is investigated. The drift waves are linearly unstable, and a quasi-stationary turbulent state is reached in a finite time, independent of the initial conditions. Different regimes of the turbulent state can be obtained by varying the coupling parameter C, related to the parallel electron dynamics. The turbulence is described by using particle tracking and tools from chaos analysis. The largest Lyapunov exponent lambda(1) is calculated for different values of C to quantify the chaoticity and compared with Lagrangian inverse time scales obtained by tracking virtual fluid particles. ",

keywords = "Optik og sensorsystemer",

author = "T.S. Pedersen and Poul Michelsen and {Juul Rasmussen}, J.",

year = "1996",

doi = "10.1088/0031-8949/1996/T67/006",

language = "English",

volume = "T67",

pages = "30--32",

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TY - JOUR

T1 - Analysis of chaos in plasma turbulence

AU - Pedersen, T.S.

AU - Michelsen, Poul

AU - Juul Rasmussen, J.

PY - 1996

Y1 - 1996

N2 - A two-dimensional slab model for resistive drift waves in plasmas consisting of two coupled nonlinear partial differential equations for the density perturbation n and the electrostatic potential perturbation phi is investigated. The drift waves are linearly unstable, and a quasi-stationary turbulent state is reached in a finite time, independent of the initial conditions. Different regimes of the turbulent state can be obtained by varying the coupling parameter C, related to the parallel electron dynamics. The turbulence is described by using particle tracking and tools from chaos analysis. The largest Lyapunov exponent lambda(1) is calculated for different values of C to quantify the chaoticity and compared with Lagrangian inverse time scales obtained by tracking virtual fluid particles.

AB - A two-dimensional slab model for resistive drift waves in plasmas consisting of two coupled nonlinear partial differential equations for the density perturbation n and the electrostatic potential perturbation phi is investigated. The drift waves are linearly unstable, and a quasi-stationary turbulent state is reached in a finite time, independent of the initial conditions. Different regimes of the turbulent state can be obtained by varying the coupling parameter C, related to the parallel electron dynamics. The turbulence is described by using particle tracking and tools from chaos analysis. The largest Lyapunov exponent lambda(1) is calculated for different values of C to quantify the chaoticity and compared with Lagrangian inverse time scales obtained by tracking virtual fluid particles.

KW - Optik og sensorsystemer

U2 - 10.1088/0031-8949/1996/T67/006

DO - 10.1088/0031-8949/1996/T67/006

M3 - Journal article

SN - 0281-1847

VL - T67

SP - 30

EP - 32

JO - Physica Scripta

JF - Physica Scripta

T2 - International Conference on Complex Dynamics in Spatially Extended Systems

Y2 - 26 September 1995 through 29 September 1995

ER -

Analysis of chaos in plasma turbulence

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