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Turbulent transport reduction induced by transition on radial electric field shear and curvature through amplitude and cross-phase in torus plasma
https://repo.qst.go.jp/records/48877
https://repo.qst.go.jp/records/4887797944280-f0c2-4a4e-98f0-53646083eb9c
| 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 | Turbulent transport reduction induced by transition on radial electric field shear and curvature through amplitude and cross-phase in torus plasma | |||||
| 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 |
小林, 達也
× 小林, 達也× 伊藤, 公孝× 井戸, 毅× 神谷, 健作× 伊藤, 早苗× 三浦, 幸俊× 永島, 芳彦× 藤沢, 彰英× 稲垣, 滋× 居田, 克己× 神谷 健作 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Spatiotemporal evolutions of radial electric field and turbulence are measured simultaneously in the H-mode transition, which is a prototypical example of turbulence structure formation in hightemperature plasmas. In the dynamical phase where transport barrier is established abruptly, the time-space-frequency-resolved turbulent particle flux is obtained. Here we report the validation of the mechanism of transport barrier formation quantitatively. It is found that the particle flux is suppressed predominantly by reducing density fluctuation amplitude and cross phase between density fluctuation and potential fluctuation. Both radial electric field shear and curvature are responsible for the amplitude suppression as was predicted by theory. Turbulence amplitude reduction immediately responds to the growth of the radial electric field non-uniformity and saturates, while cross phase continuously approaches zero. |
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| 書誌情報 |
Scientific Reports 巻 7, 号 14971, p. 1-8, 発行日 2017-11 |
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| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1038/s41598-017-14821-y | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.nature.com/articles/s41598-017-14821-y | |||||
| 関連名称 | https://www.nature.com/articles/s41598-017-14821-y | |||||
