Effect of Microscopic Turbulence on Magnetic Island

Atsushi Furuya; Sanae I. Itoh; Masatosi Yagi

doi:10.1143/JPSJ.71.1261

Effect of Microscopic Turbulence on Magnetic Island

Atsushi Furuya, Sanae I. Itoh, Masatosi Yagi

Division of Nuclear Fusion Dynamics

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

11 Citations (Scopus)

Abstract

The dynamics of the magnetic island affected by the microscopic turbulence is analyzed using the renormalized reduced MHD equations. The evolution equations of the island width w(t) and rotation frequency ω(t) are derived in the cold ion approximation. It is found that the effects of the current flowing in a layer close to the separatrix are important to evaluate the effects of turbulent diffusions on the island rotation. As the result, the rotation of the magnetic island is driven by anomalous resistivity, and suppressed by anomalous ion viscosity and thermal conductivity.

Original language	English
Pages (from-to)	1261-1267
Number of pages	7
Journal	journal of the physical society of japan
Volume	71
Issue number	5
DOIs	https://doi.org/10.1143/JPSJ.71.1261
Publication status	Published - May 2002

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1143/JPSJ.71.1261

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title = "Effect of Microscopic Turbulence on Magnetic Island",

abstract = "The dynamics of the magnetic island affected by the microscopic turbulence is analyzed using the renormalized reduced MHD equations. The evolution equations of the island width w(t) and rotation frequency ω(t) are derived in the cold ion approximation. It is found that the effects of the current flowing in a layer close to the separatrix are important to evaluate the effects of turbulent diffusions on the island rotation. As the result, the rotation of the magnetic island is driven by anomalous resistivity, and suppressed by anomalous ion viscosity and thermal conductivity.",

author = "Atsushi Furuya and Itoh, {Sanae I.} and Masatosi Yagi",

year = "2002",

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AU - Furuya, Atsushi

AU - Itoh, Sanae I.

AU - Yagi, Masatosi

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Y1 - 2002/5

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AB - The dynamics of the magnetic island affected by the microscopic turbulence is analyzed using the renormalized reduced MHD equations. The evolution equations of the island width w(t) and rotation frequency ω(t) are derived in the cold ion approximation. It is found that the effects of the current flowing in a layer close to the separatrix are important to evaluate the effects of turbulent diffusions on the island rotation. As the result, the rotation of the magnetic island is driven by anomalous resistivity, and suppressed by anomalous ion viscosity and thermal conductivity.

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JO - journal of the physical society of japan

JF - journal of the physical society of japan

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ER -

Effect of Microscopic Turbulence on Magnetic Island

Abstract

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