Turbulent stabilization of neoclassical tearing modes

Andrei Smolyakov; Patrick Diamond; Masatoshi Yagi; Kimitaka Itoh; Sanae Itoh

doi:10.1143/JPSJ.76.113501

Turbulent stabilization of neoclassical tearing modes

Andrei Smolyakov, Patrick Diamond, Masatoshi Yagi, Kimitaka Itoh, Sanae Itoh

Division of Nuclear Fusion Dynamics

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

2 Citations (Scopus)

Abstract

Effect of turbulence on neoclassical tearing modes (NTM) is studied assuming the scale separation between the small scale turbulence and large scale magnetic island. The modified Ohms law taking into account the bootstrap current and the current diffusion due to the small scale turbulence is used. It is shown that the turbulent spreading of the current reduces the pressure gradient drive for NTM and provides an amplitude threshold for NTM excitation.

Original language	English
Article number	113501
Journal	journal of the physical society of japan
Volume	76
Issue number	11
DOIs	https://doi.org/10.1143/JPSJ.76.113501
Publication status	Published - Nov 1 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1143/JPSJ.76.113501

Cite this

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title = "Turbulent stabilization of neoclassical tearing modes",

abstract = "Effect of turbulence on neoclassical tearing modes (NTM) is studied assuming the scale separation between the small scale turbulence and large scale magnetic island. The modified Ohms law taking into account the bootstrap current and the current diffusion due to the small scale turbulence is used. It is shown that the turbulent spreading of the current reduces the pressure gradient drive for NTM and provides an amplitude threshold for NTM excitation.",

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AU - Smolyakov, Andrei

AU - Diamond, Patrick

AU - Yagi, Masatoshi

AU - Itoh, Kimitaka

AU - Itoh, Sanae

PY - 2007/11/1

Y1 - 2007/11/1

N2 - Effect of turbulence on neoclassical tearing modes (NTM) is studied assuming the scale separation between the small scale turbulence and large scale magnetic island. The modified Ohms law taking into account the bootstrap current and the current diffusion due to the small scale turbulence is used. It is shown that the turbulent spreading of the current reduces the pressure gradient drive for NTM and provides an amplitude threshold for NTM excitation.

AB - Effect of turbulence on neoclassical tearing modes (NTM) is studied assuming the scale separation between the small scale turbulence and large scale magnetic island. The modified Ohms law taking into account the bootstrap current and the current diffusion due to the small scale turbulence is used. It is shown that the turbulent spreading of the current reduces the pressure gradient drive for NTM and provides an amplitude threshold for NTM excitation.

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Turbulent stabilization of neoclassical tearing modes

Abstract

All Science Journal Classification (ASJC) codes

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