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Role of electric field curvature in the formation of edge transport barrier in the JT-60U tokamak
https://repo.qst.go.jp/records/48875
https://repo.qst.go.jp/records/488752743ddfc-d205-4444-a92d-f8e8707e40dd
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-05-08 | |||||
| タイトル | ||||||
| タイトル | Role of electric field curvature in the formation of edge transport barrier in the JT-60U tokamak | |||||
| 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× 伊藤, 公孝× 伊藤, 早苗× 居田, 克己× 小林, 達也× 神谷 健作 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Based on the high-resolution spectroscopic measurements of the radial electric field (Er) in the JT-60U tokamak, we have identified the mechanisms centered around the role of the Er-curvature on the edge transport barrier (ETB) formation. In addition, we recognized a new role of the Er-shear as for the expansion of pedestal width, compensating an unfavorable effect of the Er-curvature having its sign dependence on the turbulence transport. We found a new interesting phenomenon of very slow out of phase oscillations between the Er and ion temperature gradient in the frequency range of 30-50 Hz, preceding the slow L-H transition, which can demonstrate a causality test of the ETB formation in association with the non-uniformity Er-effects. A critical condition for the Er-bifurcations is also discussed. | |||||
| 書誌情報 |
Plasma Physics and Controlled Fusion 巻 60, 号 1, p. 014023-1-014023-9, 発行日 2018-05 |
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| 出版者 | ||||||
| 出版者 | IOP | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/1361-6587/aa8a01 | |||||
