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Internal Transport Barrier in Tokamak and Helical Plasmas
http://hdl.handle.net/10655/00012549
http://hdl.handle.net/10655/000125493a4efd60-d2a1-48f5-a8f4-c12b92b1a9f6
名前 / ファイル | ライセンス | アクション |
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Plasma_Phys.Control.Fusion60(3)_pp033001 (8.5 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-07-05 | |||||
タイトル | ||||||
タイトル | Internal Transport Barrier in Tokamak and Helical Plasmas | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | internal transport barrier | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ITB | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | troidal plasma | |||||
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 |
IDA, Katsumi
× IDA, Katsumi× FUJITA, Takaaki |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0002-0585-4561 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The differences and similarities between the internal transport barriers (ITBs) of tokamak and helical plasmas are reviewed. By comparing the characteristics of the ITBs in tokamak and helical plasmas, the mechanisms of the physics for the formation and dynamics of the ITB are clarified. The ITB is defined as the appearance of discontinuity of temperature, flow velocity, or density gradient in the radius. From the radial profiles of temperature, flow velocity, and density the ITB is characterized by the three parameters of normalized temperature gradient, $R/{L}_{T}$, the location, ${\rho }_{\mathrm{ITB}}$, and the width, W/a, and can be expressed by 'weak' ITB (small $R/{L}_{T}$) or 'strong' (large $R/{L}_{T}$), 'small' ITB (small ${\rho }_{\mathrm{ITB}}$) or 'large' ITB (large ${\rho }_{\mathrm{ITB}}$), and 'narrow' (small W/a) or 'wide' (large W/a). Three key physics elements for the ITB formation, radial electric field shear, magnetic shear, and rational surface (and/or magnetic island) are described. The characteristics of electron and ion heat transport and electron and impurity transport are reviewed. There are significant differences in ion heat transport and electron heat transport. The dynamics of ITB formation and termination is also discussed. The emergence of the location of the ITB is sometimes far inside the ITB foot in the steady-state phase and the ITB region shows radial propagation during the formation of the ITB. The non-diffusive terms in momentum transport and impurity transport become more dominant in the plasma with the ITB. The reversal of the sign of non-diffusive terms in momentum transport and impurity transport associated with the formation of the ITB reported in helical plasma is described. Non-local transport plays an important role in determining the radial profile of temperature and density. The spontaneous change in temperature curvature (second radial derivative of temperature) in the ITB region is described. In addition, the key parameters of the control of the ITB and future prospects are discussed. | |||||
書誌情報 |
Plasma Physics and Controlled Fusion 巻 60, 号 3, p. 033001, 発行日 2018-01-24 |
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出版者 | ||||||
出版者 | IOP Publishing | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 07413335 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10643410 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1361-6587/aa9b03 | |||||
権利 | ||||||
権利情報 | This is the Accepted Manuscript version of an article accepted for publication in Plasma Physics and Controlled 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/10.1088/1361-6587/aa9b03. | |||||
情報源 | ||||||
関連名称 | K Ida and T Fujita 2018 Plasma Phys. Control. Fusion 60 033001 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1361-6587/aa9b03 | |||||
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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