Turbulence spreading in reversed shear plasmas

200639 citationsJournal Article

Authors

M. Yagi · Kyushu University

Tomoya Ueda · Kyushu University

S-I Itoh · Kyushu University

M. Azumi · Advanced Science Research Center

K. Itoh · National Institutes of Natural Sciences

P. H. Diamond · University of California, San Diego

T. S. Hahm ·

Abstract

Turbulence spreading in reversed shear plasmas is investigated using a simple, multi-fluid model of ITG turbulence in toroidal geometry. The temperature profile modification is accompanied by avalanche processes. In addition, it is found that the turbulence spreads inwards and outwards, owing to the nonlinear interactions of turbulence. Analysis of the simulation results indicates that the spatio-temporal propagation of the turbulence front is quantitatively consistent with the scaling of speed predicted by the Fisher front theory.

Topics & Keywords

Magnetic confinement fusion research Ionosphere and magnetosphere dynamics Solar and Space Plasma Dynamics

Publication Details

Published in: Plasma Physics and Controlled Fusion

Volume 48, Issue 5A, pp. A409-A418

DOI: 10.1088/0741-3335/48/5a/s42

Field-Weighted Citation Impact: 7.75

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Turbulence spreading in reversed shear plasmas

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Abstract

Topics & Keywords

Publication Details