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Unveiling the structure and dynamics of peeling mode in quiescent high-confinement tokamak plasmas
https://repo.qst.go.jp/records/84336
https://repo.qst.go.jp/records/843364ab996d2-50fd-412f-82b5-cd43c3712d73
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-09-29 | |||||
| タイトル | ||||||
| タイトル | Unveiling the structure and dynamics of peeling mode in quiescent high-confinement 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 |
Kensaku, Kamiya
× Kensaku, Kamiya× Itoh, Kimitaka× Nobuyuki, Aiba× Naoyuki, Oyama× Mitsuru, Honda× Akihiko, Isayama× Kensaku, Kamiya× Nobuyuki, Aiba× Naoyuki, Oyama× Mitsuru, Honda× Akihiko, Isayama |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Quiescent high-confinement mode plasmas with edge-harmonic oscillations do not exhibit the explosive instabilities associated with edge-localized modes. Instead, an additional means of enhanced transport is considered to maintain the plasma edge under conditions just below the boundary of the peeling mode instability. Although the potential of the peeling mode has been widely recognized in plasma physics, no direct evidence for this mode has been revealed previously because decisive diagnostics were lacking. Herein, we report evidence of the structure and dynamical steady state of peeling mode in quiescent high-confinement mode. Edge-harmonic oscillations are dominated by fundamental mode at both the low- and high-field sides. Edge perturbations are confirmed to have kink parity and exhibit the frozen-in-condition predicted by linear stability analysis. The envelope signal of the fundamental mode exhibits repeated cycles of growth and damping in association with minor changes in the edge gradient. Results from this study are quantitatively consistent with limit-cycle-oscillation model. | |||||
| 書誌情報 |
communications physics 巻 4, p. 141, 発行日 2021-06 |
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| 出版者 | ||||||
| 出版者 | Nature | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2399-3650 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1038/s42005-021-00644-x | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1038/s42005-021-00644-x | |||||
