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Theoretical analysis of the saturation phase of the 1/1 energetic-ion-driven resistive interchange mode
http://hdl.handle.net/10655/00012873
http://hdl.handle.net/10655/0001287304c6bab3-22e2-4bd2-8ca9-af3588a7236a
名前 / ファイル | ライセンス | アクション |
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Nucl.Fusion61_pp126016 (2.3 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-12-28 | |||||
タイトル | ||||||
タイトル | Theoretical analysis of the saturation phase of the 1/1 energetic-ion-driven resistive interchange mode | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | MHD | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | AE | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | stability | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | EIC | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | non linear | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | optimization | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | LHD | |||||
キーワード | ||||||
主題Scheme | Other | |||||
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 |
VARELA, Jacobo
× VARELA, Jacobo× SPONG, Donald A.× GARCIA, Luis× OHDACHI, Satoshi× WATANABE, Kiyomasa× SEKI, Ryosuke× GHAI, Y. |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0002-6114-0539 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The aim of the present study is to analyze the saturation regime of the energetic-ion-driven resistive interchange mode (EIC) in the LHD plasma. A set of nonlinear simulations are performed by the FAR3d code that uses a reduced MHD model for the thermal plasma coupled with a gyrofluid model for the energetic particle (EP) species. The hellically trapped EP component is introduced through a modification of the averaged drift velocity operator to include their precessional drift. The nonlinear simulation results show similar 1/1 EIC saturation phases with respect to the experimental observations, reproducing the enhancement of the n/m = 1/1 resistive interchange modes (RIC) amplitude and width as the EP β increases, the EP β threshold for the 1/1 EIC excitation, the further destabilization of the 1/1 EIC as the population of the helically trapped EP increases and the triggering of burst events. The frequency of the 1/1 EIC calculated during the burst event is 9.4 kHz and the 2/2 and 3/3 overtones are destabilized, consistent with the frequency range and the complex mode structure measured in the experiment. In addition, the simulation shows the inward propagation of the 1/1 EIC due to the nonlinear destabilization of the 3/4 and 2/3 energetic particle modes, leading to the partial overlapping between resonances during the burst event. Finally, the analysis of the 1/1 EIC stabilization phase shows the excitation of the 1/1 RIC as soon as the flattening induced by the 1/1 EIC in the pressure profile vanishes, leading to the retrieval of the pressure gradient at the plasma periphery and the overcoming of the RIC stability limit. | |||||
書誌情報 |
Nuclear Fusion 巻 61, 号 12, p. 126016, 発行日 2021-10-22 |
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出版者 | ||||||
出版者 | IOP Publishing | |||||
出版者 | ||||||
出版者 | International Atomic Energy Agency | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0029-5515 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00759871 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1088/1741-4326/ac26a0 | |||||
権利 | ||||||
権利情報 | This is the Accepted Manuscript version of an article accepted for publication in Nuclear Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1741-4326/ac26a0. | |||||
情報源 | ||||||
関連名称 | J. Varela et al 2021 Nucl. Fusion 61 126016 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1741-4326/ac26a0 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
NAIS | ||||||
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