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V-band frequency hopping microwave reflectometer in LHD
http://hdl.handle.net/10655/3878
http://hdl.handle.net/10655/38781f683b07-bfc6-462c-88c3-c1168c031782
名前 / ファイル | ライセンス | アクション |
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1938 RevSciInstrum_79_10F109.pdf (533.1 kB)
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Item type | 学術雑誌論文 / Journal Article_02(1) | |||||
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公開日 | 2010-10-08 | |||||
タイトル | ||||||
タイトル | V-band frequency hopping microwave reflectometer in LHD | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | discharges (electric) | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | microwave reflectometry | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | plasma diagnostics | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | plasma fluctuations | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | plasma instability | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | plasma magnetohydrodynamics | |||||
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 |
Tokuzawa, T.
× Tokuzawa, T.× Ejiri, A.× Kawahata, K.× Tanaka, K.× Ito, Y. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In order to measure the internal structure of fluctuation, the broadband frequency tunable system, which has the ability of fast and stable hopping operation, is applied in the Large Helical Device. One of the important issues of density fluctuation measurements using this reflectometer is the study of energetic particle driven magnetohydrodynamics instability. During one plasma discharge, the launching frequency changes from one frequency to another frequency, which this operation is called as frequency hopping, and the cutoff position can be scanned in the wide area. As a hopping source, a synthesizer is used because it has a quite stable and low phase noise. The frequency component of the source output is multiplied to V-band (50?75 GHz) region for plasma measurements in extraordinary mode polarization. Also this system has a heterodyne detection with single side band frequency modulation for sensitive phase and amplitude measurement. We can obtain the radial profile of Alfv?n eigenmodelike oscillation in a neutral beam injected plasma. | |||||
書誌情報 |
en : Review of Scientific Instruments 巻 Vol.79, p. 10F109-1 - 10F109-4, 発行日 2008-10-01 |
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出版者 | ||||||
出版者 | American Institute of Physics | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1063/1.2969036 | |||||
権利 | ||||||
権利情報 | ? 2008 American Institute of Physics | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/1.2969036 | |||||
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 |