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Non-Resonant n = 1 Helical Core Induced by m/n = 2/1 Neoclassical Tearing Mode in JT-60U
https://repo.qst.go.jp/records/82132
https://repo.qst.go.jp/records/82132d300a6b2-b4d3-4c79-ad08-c35b9e261de1
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-03-12 | |||||
| タイトル | ||||||
| タイトル | Non-Resonant n = 1 Helical Core Induced by m/n = 2/1 Neoclassical Tearing Mode in JT-60U | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 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 |
坂東, 隆宏
× 坂東, 隆宏× 井上, 静雄× 篠原, 孝司× 諫山, 明彦× 若月, 琢馬× 吉田, 麻衣子× 本多, 充× 松永, 剛× 武智, 学× 大山, 直幸× 井手, 俊介× Takahiro, Bando× Shizuo, Inoue× Koji, Shinohara× Akihiko, Isayama× Takuma, Wakatsuki× Maiko, Yoshida× Mitsuru, Honda× Go, Matsunaga× Manabu, Takechi× Naoyuki, Oyama× Shunsuke, Ide |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We have investigated the excitation mechanism of n = 1 helical cores (HCs) with m/n = 2/1 neoclassical tearing modes (NTMs) in JT-60U. It is found that the n = 1 HC is observed with the mode frequency from several Hz to 6 kHz. This indicates that the resistive wall and the plasma control system do not induce n = 1 HCs because the both time scales are different from the mode frequency. In addition, n = 1 HCs appear to be the non-resonant mode from the two observations: n = 1 HCs do not rotate with the plasma around the q = 1 surface in the core and an n = 1 HC is observed even when qmin. > 1. It is also observed that the fluctuation due to an n = 1 HC in the core region disappears with the stabilization of an m/n = 2/1 NTM, implying that n = 1 HCs are driven by m/n = 2/1 NTMs. We revisit a quasi-linear MHD model where the n = 1 HC is induced directly by the sideband of the current for the m/n = 2/1 NTM, which potentially excites the non-resonant m/n = 1/1 mode. | |||||
| 書誌情報 |
Plasma and Fusion Research 巻 16, p. 1402030, 発行日 2021-03 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1880-6821 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1585/pfr.16.1402030 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.jspf.or.jp/PFR/PFR_articles/pfr2021/pfr2021_16-1402030.html | |||||
