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A study on the TAE-induced fast-ion loss process in LHD
http://hdl.handle.net/10655/00013080
http://hdl.handle.net/10655/00013080cf56063a-6d7f-4622-82ac-2c40fa48d1b1
名前 / ファイル | ライセンス | アクション |
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Nucl.Fusion53_pp053012 (1.2 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-03-25 | |||||
タイトル | ||||||
タイトル | A study on the TAE-induced fast-ion loss process in LHD | |||||
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 |
OGAWA, Kunihiro
× OGAWA, Kunihiro× ISOBE, Mitsutaka× TOI, Kazuo× SHIMIZU, Akihiro× SPONG, Donald A.× OSAKABE, Masaki× YAMAMOTO, S.× The LHD Experiment Group, |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Characteristics of fast-ion losses induced by toroidal-Alfv en eigenmodes (TAEs) are investigated over wide parameter ranges of Large Helical Device (LHD) plasmas to reveal the fast-ion loss process. To study fast-ion losses, a scintillator-based lost-fast ion probe is used, and an increment of fast-ion loss flux due to TAEs from the neoclassical orbit loss level (ΔΓfast ion) is measured. The dependence of ΔΓfast ion on the TAE magnetic fluctuation amplitude (bθTAE) changes from a linear to a quadratic and finally a third power with an increase in the magnetic axis shift. It is found that the dependence of fast-ion loss flux on TAE magnetic fluctuation amplitudes changes at a certain fluctuation level in a fixed configuration. Experimental results show that in the small bθTAE regime, ΔΓfast ion is proportional to bθTAE, whereas ΔΓfast ion increases with the square of bθTAE in the larger bθTAE regime. A simulation by orbit-following codes that incorporate magnetic fluctuations with frequency chirping-down due to TAEs suggests the change in the fast-ion loss process from a convective ( ΔΓ ion ∝ bθTAE) to a diffusive (ΔΓfast ion ∝ b2 θTAE) character as bθTAE increases. |
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書誌情報 |
Nuclear Fusion 巻 53, 号 5, p. 053012, 発行日 2013-04-23 |
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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 | 00295515 | |||||
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 | 10.1088/0029-5515/53/5/053012 | |||||
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/10.1088/0029-5515/53/5/053012. | |||||
情報源 | ||||||
関連名称 | K. Ogawa et al 2013 Nucl. Fusion 53 053012 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/0029-5515/53/5/053012 | |||||
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 | ||||||
7818 |