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Experimental validation of nonuniformity effect of the radial electric field on the edge transport barrier formation in JT-60U H-mode plasmas
https://repo.qst.go.jp/records/48592
https://repo.qst.go.jp/records/48592f76bf47b-c6e6-4551-963e-13a228545815
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-03-19 | |||||
| タイトル | ||||||
| タイトル | Experimental validation of nonuniformity effect of the radial electric field on the edge transport barrier formation in JT-60U H-mode 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 |
神谷, 健作
× 神谷, 健作× 神谷 健作 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The turbulent structure formation, where strongly-inhomogeneous turbulence and global electromagnetic fields are self-organized, is a fundamental mechanism that governs the evolution of high-temperature plasmas in the universe and laboratory (e.g., the generation of edge transport barrier (ETB) of the H-mode in the toroidal plasmas). The roles of inhomogeneities of radial electric field (Er) are known inevitable. In this mechanism, whether the first derivative of Er (shear) or the second derivative of Er (curvature) works most is decisive in determining the class of nontrivial solutions (which describe the barrier structure). Here we report the experimental identification of the essential role of the Er-curvature on the ETBs formation, for the first time, based on the high-spatiotemporal resolution spectroscopic measurement. While there is only a low correlation between ETBs formation and the Er-shear at the peak of normalized ion temperature gradient, we found the decisive importance of Er-curvature. The impact of the curvature is quantified, by comparing with theory. This is the fundamental basis to understand the structure of transport barriers in fusion plasmas. | |||||
| 書誌情報 |
Scientific Reports 巻 6, p. 30585-1-30585-7, 発行日 2016-08 |
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| 出版者 | ||||||
| 出版者 | Nature Publishing Group | |||||
| 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/srep30585 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.nature.com/articles/srep30585 | |||||
| 関連名称 | http://www.nature.com/articles/srep30585 | |||||
