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Simultaneous excitation of the snake-like oscillations and the m/n = 1/1 resistive interchange modes around the iota = 1 rational surface just after hydrogen pellet injections in LHD plasmas
http://hdl.handle.net/10655/00012785
http://hdl.handle.net/10655/00012785fafcbcc8-6a77-43a5-847e-b5f167be2333
| 名前 / ファイル | ライセンス | アクション |
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Phys.Plasmas25_pp012507 (3.0 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||||||||||||||||
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| 公開日 | 2021-12-20 | |||||||||||||||||||||||||||||||
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| タイトル | Simultaneous excitation of the snake-like oscillations and the m/n = 1/1 resistive interchange modes around the iota = 1 rational surface just after hydrogen pellet injections in LHD 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 | |||||||||||||||||||||||||||||||
| 著者 |
Bando, T.
× Bando, T.
× OHDACHI, Satoshi
× SUZUKI, Yasuhiro
× SAKAMOTO, Ryuichi
× NARUSHIMA, Yoshiro
× TAKEMURA, Yuki
× WATANABE, Kiyomasa
× SAKAKIBARA, Satoru
× Du, X.D.
× MOTOJIMA, Gen
× TANAKA, Kenji
× MORISAKI, Tomohiko
× LHD Experiment Group,
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| 内容記述タイプ | Abstract | |||||||||||||||||||||||||||||||
| 内容記述 | Two types of oscillation phenomena are found just after hydrogen ice pellet injections in the Large Helical Device (LHD). Oscillation phenomena appear when the deposition profile of a hydrogen ice pellet is localized around the rotational transform ι = 1 rational surface. At first, damping oscillations (type-I) appear only in the soft X-ray (SX) emission. They are followed by the second type of oscillations (type-II) where the magnetic fluctuations and density fluctuations synchronized to the SX fluctuations are observed. Both oscillations have poloidal/toroidal mode number, m/n = 1/1. Since the type-II oscillations appear when the local pressure is large and/or the local magnetic Reynold's number is small, it is reasonable that type-II oscillations are caused by the resistive interchange modes. Because both types of oscillations appear simultaneously at slightly different locations and with slightly different frequencies, it is certain that type-I oscillations are different from type-II oscillations, which we believe is the MHD instability. It is possible that type-I oscillations are caused by the asymmetric concentration of the impurities. The type-I oscillations are similar to the impurity snake phenomena observed in tokamaks though type-I oscillations survive only several tens of milliseconds in LHD. | |||||||||||||||||||||||||||||||
| 書誌情報 |
Physics of Plasmas 巻 25, 号 1, p. 012507, 発行日 2018-01-10 |
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| 出版者 | AIP Publication | |||||||||||||||||||||||||||||||
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| 収録物識別子タイプ | ISSN | |||||||||||||||||||||||||||||||
| 収録物識別子 | 1070664X | |||||||||||||||||||||||||||||||
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| 収録物識別子タイプ | NCID | |||||||||||||||||||||||||||||||
| 収録物識別子 | AA10987555 | |||||||||||||||||||||||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||||||||||||||||||||||
| 識別子タイプ | DOI | |||||||||||||||||||||||||||||||
| 関連識別子 | 10.1063/1.5003058 | |||||||||||||||||||||||||||||||
| 権利 | ||||||||||||||||||||||||||||||||
| 権利情報 | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Physics of Plasmas 25, 012507 (2018); and may be found at 25, 012507 (2018). | |||||||||||||||||||||||||||||||
| 権利 | ||||||||||||||||||||||||||||||||
| 権利情報 | Copyright 2017 Author(s). This article is distributed under a Creative Commons Attribution (CC BY) License. | |||||||||||||||||||||||||||||||
| 情報源 | ||||||||||||||||||||||||||||||||
| 関連名称 | Physics of Plasmas 25, 012507 (2018); https://doi.org/10.1063/1.5003058 | |||||||||||||||||||||||||||||||
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| 識別子タイプ | DOI | |||||||||||||||||||||||||||||||
| 関連識別子 | https://doi.org/10.1063/1.5003058 | |||||||||||||||||||||||||||||||
| 関連名称 | Publisher version | |||||||||||||||||||||||||||||||
| 著者版フラグ | ||||||||||||||||||||||||||||||||
| 出版タイプ | VoR | |||||||||||||||||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||||||||||||||||||
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Bando, T., OHDACHI, Satoshi, SUZUKI, Yasuhiro, SAKAMOTO, Ryuichi, NARUSHIMA, Yoshiro, TAKEMURA, Yuuki, WATANABE, Kiyomasa, SAKAKIBARA, Satoru, Du, X.D., MOTOJIMA, Gen, TANAKA, Kenji, MORISAKI, Tomohiko, The LHD Experiment Group, , 2018, Simultaneous excitation of the snake-like oscillations and the m/n = 1/1 resistive interchange modes around the iota = 1 rational surface just after hydrogen pellet injections in LHD plasmas: AIP Publication, 012507– p.
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