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Observation of the inward propagation of spontaneous toroidal flow from the plasma boundary in LHD
https://repo.qst.go.jp/records/48591
https://repo.qst.go.jp/records/48591a98a7b73-192a-4fef-b678-30d6c7dff232
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-03-19 | |||||
タイトル | ||||||
タイトル | Observation of the inward propagation of spontaneous toroidal flow from the plasma boundary in LHD | |||||
言語 | ||||||
言語 | eng | |||||
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 | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
神谷, 健作
× 神谷, 健作× al., et× 神谷 健作 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Spontaneous generation of toroidal flow from the separatrix and its inward radial propagation in association with the change in the electron temperature gradient have been observed near the plasma boundary in the modulated electron cyclotron heating (MECH) experiment in the Large Helical Device (LHD). The observations presented in this paper provide strongly supports the hypothesis for the conversion of the poloidal flow to the toroidal one at the plasma peripheral region, exhibiting a clear delay response on MECH in the time derivation of the toroidal flow ((V ̇_ϕ≡∂V_ϕ)⁄∂t) to the poloidal one ((V ̇_θ≡∂V_θ)⁄∂t) at a normalized radius of ρ≈ 0.97. The ratio of order unity for |V ̇_ϕ⁄V ̇_θ | during a conversion phase from poloidal flow into toroidal one is consistent with that predicted by a quasi-stationary theoretical model based on the turbulent instability, regardless of its sign and spatial structure. The present work demonstrates a new dynamic response in the plasma momentum transport and represents a significant confirmation of its non-local nature. | |||||
書誌情報 |
PHYSICS OF PLASMAS 巻 23, 号 10, p. 102309-1-102309-5, 発行日 2016-10 |
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出版者 | ||||||
出版者 | AIP Publishing | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1070-664X | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1063/1.4965908 | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://aip.scitation.org/doi/10.1063/1.4965908 | |||||
関連名称 | http://aip.scitation.org/doi/10.1063/1.4965908 |