On-off intermittent regulation of plasma turbulence

Bian, N.H. (2010) On-off intermittent regulation of plasma turbulence. Physics of Plasmas, 17(4), 044501. (doi:10.1063/1.3368799)

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Publisher's URL: http://dx.doi.org/10.1063/1.3368799

Abstract

A standard low-dimensional model of the dynamical regulation of plasma turbulence including zonal flows is considered in a statistical sense by taking into account the fluctuating nature of the source driving the system. The probability distribution functions of the turbulent kinetic energy and the zonal flows energy are derived. The dynamics become on-off intermittent close to the bifurcation thresholds. In its low confinement mode, without zonal flows, the system can also display random finite amplitude burst close to marginal stability, a result reminiscent of the self-organized-criticality paradigm applied to flux-driven plasma turbulence.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Bian, Dr Nicolas Horace
Authors: Bian, N.H.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physics of Plasmas
Publisher:American Institute of Physics
ISSN:1070-664X
ISSN (Online):1089-7674
Published Online:08 April 2010

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
465931Solar, stellar and cosmological plasmas: a synthesis of data, modelling and theory.Declan DiverScience & Technologies Facilities Council (STFC)ST/F002149/1Physics and Astronomy