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Multi-Dimensional Structure of the Electric Field in Tokamak H-Mode
http://hdl.handle.net/10655/2247
http://hdl.handle.net/10655/224704fa9020-0248-4767-9e2f-e93b84678ab6
名前 / ファイル | ライセンス | アクション |
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175.pdf (313.2 kB)
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Item type | 学術雑誌論文 / Journal Article_02(1) | |||||
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公開日 | 2010-01-18 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Multi-Dimensional Structure of the Electric Field in Tokamak H-Mode | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | poloidal shock structure | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | electric field | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | H-mode | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | inward particle pinch | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | shear viscosity | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
KASUYA, Naohiro
× KASUYA, Naohiro× ITOH, Kimitaka |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In tokamak H-mode, a large poloidal flow exists in an edge transport barrier, and the electrostatic potential and density profiles can be steep both in the radial and poloidal direction. Two-dimensional structures of the potential, density and flow velocity near the edge of a tokamak plasma are investigated. The model includes the nonlinearity in bulk-ion viscosity and turbulence-driven shear viscosity. For the case with a strong radial electric field (H-mode), a two-dimensional structure in a transport barrier is obtained, giving a poloidal shock with a solitary radial electric field profile. The poloidal electric field induces convective transport in the radial direction, and poloidal asymmetry makes the flux-surface-averaged particle flux direct inward with a pinch velocity on the order of 1 [m/s]. A large poloidal flow with radial shear enhances the inward pinch velocity. The abrupt increase of this inward ion and electron flux at the onset of L-to-H-mode transition explains the rapid establishment of the density pedestal at the transition. | |||||
書誌情報 |
en : プラズマ・核融合学会誌 巻 Vol.81, 号 No.7, p. pp. 553 - 562, 発行日 2005-07-01 |
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出版者 | ||||||
出版者 | プラズマ・核融合学会 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1585/jspf.81.553 |