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Radial electric fields in the vicinity of locked magnetic islands
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- S. Nishimura
- National Institute for Fusion Science 1 , Toki, Gifu 509-5292, Japan
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- K. Itoh
- National Institute for Fusion Science 1 , Toki, Gifu 509-5292, Japan
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- M. Yagi
- Kyushu University 2 Research Institute for Applied Mechanics, , Kasuga, Fukuoka 816-8580, Japan
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- K. Ida
- National Institute for Fusion Science 1 , Toki, Gifu 509-5292, Japan
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- S.-I. Itoh
- Kyushu University 2 Research Institute for Applied Mechanics, , Kasuga, Fukuoka 816-8580, Japan
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Description
<jats:p>The radial electric field in the vicinity of magnetic islands locked by resonant magnetic perturbations (static error fields) is numerically studied using a set of reduced two-fluid equations. The asymmetric radial electric fields across locked magnetic islands are observed, which are due to the symmetry breaking effects such as the cylindrical geometry and inhomogeneous electron diamagnetic drift. It is found that the magnitude of the difference (between maximum and minimum radial electric fields around O-point) is proportional to the averaged electron diamagnetic drift frequency inside magnetic islands and the square of the island width, but inversely proportional to the square root of the ion viscosity.</jats:p>
Journal
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- Physics of Plasmas
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Physics of Plasmas 17 (12), 2010-12-01
AIP Publishing
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Details 詳細情報について
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- CRID
- 1362262945561170432
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- ISSN
- 10897674
- 1070664X
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- Data Source
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- Crossref
- OpenAIRE