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Experimental Identification of Electric Field Excitation Mechanisms in a Structural Transition of Tokamak Plasmas
https://repo.qst.go.jp/records/47775
https://repo.qst.go.jp/records/4777551cf86f5-7f9d-4c52-b63a-f29ab2b782dc
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-04-25 | |||||
| タイトル | ||||||
| タイトル | Experimental Identification of Electric Field Excitation Mechanisms in a Structural Transition of Tokamak Plasmas | |||||
| 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 |
Kobayashi, T.
× Kobayashi, T.× Itoh, K.× Ido, T.× Kamiya, K.× -I., Itoh S.× Miura, Y.× Nagashima, Y.× Fujisawa, A.× Inagaki, S.× Ida, K.× Hoshino, Katsumichi× 神谷 健作× 星野 克道 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Self-regulation between structure and turbulence, which is a fundamental process in the complex system, has been widely regarded as one of the central issues in modern physics. A typical example of that in magnetically confined plasmas is the Low confinement mode to High confinement mode (L-H) transition, which is intensely studied for more than thirty years since it provides a confinement improvement necessary for the realization of the fusion reactor. An essential issue in the L-H transition physics is the mechanism of the abrupt “radial” electric field generation in toroidal plasmas. To date, several models for the L-H transition have been proposed but the systematic experimental validation is still challenging. Here we report the systematic and quantitative model validations of the radial electric field excitation mechanism for the first time, using a data set of the turbulence and the radial electric field having a high spatiotemporal resolution. Examining time derivative of Poisson’s equation, the sum of the loss-cone loss current and the neoclassical bulk viscosity current is found to behave as the experimentally observed radial current that excites the radial electric field within a few factors of magnitude. |
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| 書誌情報 |
Scientific Reports 巻 6, p. 30720-1-30720-7, 発行日 2016-08 |
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| 出版者 | ||||||
| 出版者 | Nature com | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2045-2322 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1038/srep30720 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.nature.com/articles/srep30720 | |||||
| 関連名称 | http://www.nature.com/articles/srep30720 | |||||
