Quantitative and experimental study of nonlinear processes of turbulence in non-uniform magnetized plasmas

• Project/Area Number: 18760637
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Nuclear fusion studies
• Research Institution: The University of Tokyo (2008); Kyushu University (2006-2007)
• Principal Investigator: NAGASHIMA Yoshihiko The University of Tokyo, 大学院新領域創成科学研究科, 助教 (90390632)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,830,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥30,000); Fiscal Year 2008: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000); Fiscal Year 2007: ¥100,000 (Direct Cost: ¥100,000); Fiscal Year 2006: ¥3,600,000 (Direct Cost: ¥3,600,000)
• Keywords: プラズマ乱流 / ドリフト波 / 帯状流 / バイスペクトル / 多スケール乱流 / 直線プラズマ / トカマク / 非線形エネルギー移送 / 非局所エネルギー移送 / プラズマ・核融合 / ドリフト波乱流 / 非線形過程 / バイスペクシル

Research Abstract

多スケール乱流間の非線形過程を通じたエネルギー伝達を実験的に解明する研究である。九州大学の直線プラズマ装置では、乱流揺動による運動量輸送量計測器を開発・設置して実験解析を行い、帯状流と乱流間のエネルギー流の定量的観測に成功した。原子力機構JFT-2M装置では、乱流の密度包絡線から測地音波モードの情報を抽出してバイスペクトル解析を成功させ、測地線音波固有モードによる磁気面同定法を提案した。

Research Products

• [Journal Article] Boundary of geodesic acoustic eigenmode in the vicinity of the magnetic separatrix (2009)
  • Author(s): Nagashima Y, Itoh K, Fujisawa A, Shinohara K, Itoh S I, Ido T, Yagi M, Hoshino K, Ejiri A, Takase Y, Uehara K and Miura Y
  • Journal Title: Plasma Physics and Controlled Fusion 51, No.5 Pages: 65019-65019
  • Peer Reviewed
• [Journal Article] Observation of the parametric-modulational instability between the drift-wave fluctuation and azimuthally symmetric sheared radial electric field oscillation in a cylindrical laboratory plasma (2009)
  • Author(s): Yoshihiko NAGASHIMA, Sanae I. ITOH, Shunjiro SHINOHARA, Masayuki FUKAO, Akihide FUJISAWA, Kenichiro TERASAKA, Yoshinobu KAWAI, Naohiro KASUYA, Masatoshi YAGI, Shigeru INAGAKI, Takuma YAMADA and Kimitaka ITOH
  • Journal Title: Physics of Plasmas 16 Pages: 20706-20706
  • Peer Reviewed
• [Journal Article] Reynolds Stress Measurements for Investigation of Nonlinear Processes of Turbulence in the Large Mirror Device and in the Large Mirror Device-Upgrade (2009)
  • Author(s): Yoshihiko NAGASHIMA, Sanae-I. ITOH, Kimitaka ITOH, Akihide FUJISAWA, Shigeru INAGAKI, Yoshinobu KAWAI, Shunjiro SHINOHARA, Masayuki FUKAO, Takuma YAMADA, Kenichiro TERASAKA, Takashi MARUTA, Kunihiro KAMATAKI, Hiroyuki ARAKAWA, Masatoshi YAGI, Naohiro KASUYA, George R. TYNAN, Patrick H. DIAMOND, and Yuichi Takase
  • Journal Title: Journal of Plasma and Fusion Research (in press)
  • Peer Reviewed
• [Journal Article] Observation of the parametric-modulational instability between the drift-wave fluctuation and azimuthally symmetric sheared radial electric field oscillation in a cylindrical laboratory plasma (2009)
  • Author(s): Y. Nagashima, et.al.
  • Journal Title: Physics of Plasmas 16
  • Peer Reviewed
• [Journal Article] Reynolds stress measurements for investigation of nonlinear processes of turbulence in the Large Mirror Device and Large Mirror Device-Upgrade (2009)
  • Author(s): Y. Nagashima, et.al.
  • Journal Title: Journal of Plasma and Fusion Research (印刷中(掲載決定))
  • Peer Reviewed
• [Journal Article] Boundary of geodesic acoustic eigenmode in the vicinity of the magnetic separatrix (2009)
  • Author(s): Y. Nagashima, et.al.
  • Journal Title: Plasma Physics and Controlled Fusion 51(印刷中(掲載決定))
  • Peer Reviewed
• [Journal Article] Coexistence of Zonal Flows and Drift-Waves in a Cylindrical Magnetized Plasma (2008)
  • Author(s): Yoshihiko Nagashima, Sanae -I. Itoh, Shunjiro Shinohara, Masayuki Fukao, Akihide Fujisawa, Kenichiro Terasaka, Yoshinobu Kawai, Naohiro Kasuya, George R. Tynan, Patrick H. Diamond, Masatoshi Yagi, Shigeru Inagaki, Takuma Yamada and Kimitaka Itoh
  • Journal Title: Journal of the Physical Society of Japan 77, No.11 Pages: 114501-114501
  • NAID: 110006983744
  • Peer Reviewed
• [Journal Article] Nonlinear energy transfer of drift-wave fluctuation in a cylindrical laboratory plasma (2008)
  • Author(s): Yoshihiko NAGASHIMA, Sanae -I. ITOH, Shunjiro SHINOHARA, Masayuki FUKAO, Akihide FUJISAWA, Kenichiro TERASAKA, Yoshinobu KAWAI, Naohiro KASUYA, Masatoshi YAGI, Shigeru INAGAKI, Takuma YAMADA and Kimitaka ITOH
  • Journal Title: Plasma and Fusion Research 3 Pages: 56-56
  • NAID: 130000263938
  • Peer Reviewed
• [Journal Article] Coexistence of Zonal Flows and Drift-Waves in a Cylindrical Magnetized Plasma (2008)
  • Author(s): Y. Nagashima, et.al.
  • Journal Title: Journal of the Physical Society of Japan 77
  • NAID: 110006983744
  • Peer Reviewed
• [Journal Article] Nonlinear energy transfer of drift-wave fluctuation in a cylindrical laboratory plasma (2008)
  • Author(s): Yoshihiko Nagashima, et.al.
  • Journal Title: Plasma and Fusion Research 3
  • NAID: 130000263938
  • Peer Reviewed
• [Journal Article] In search of zonal flows by using direct density fluctuation measurements (2007)
  • Author(s): Nagashima Y, Itoh K, Itoh S-I, Fujisawa A, Yagi M, Hoshino K, Shinohara K, Ejiri A, Takase Y, Ido T, Uehara K, Miura Y and JFT-2M group
  • Journal Title: Plasma Physics and Controlled Fusion 49, No.10 Pages: 1611-1625
  • Peer Reviewed
• [Journal Article] In search of zonal flows by using direct density fluctuation measurements (2007)
  • Author(s): Y., Nagashima, et. al.
  • Journal Title: Plasma Physics and Controlled Fusion 49 Pages: 1611-1625
  • Peer Reviewed
• [Journal Article] Advanced study by using the geodesic acoustic mode measurements (2007)
  • Author(s): Y., Nagashima, et. al.
  • Journal Title: Proc. of 34th EPS Conference on Plasma Physics 34 Pages: 2047-2047
• [Journal Article] Identification of the paametric-modulational instability of the drift wave-zonal flow systems in a cylindrical laboratory plasma (2007)
  • Author(s): Y., Nagashima, et. al.
  • Journal Title: Bulletin of Division of Plasma Plasma Physics, APS(2007) 49 Pages: 800073-800073
• [Journal Article] 高密度直線プラズマ中のドリフト波乱流実験VIII 揺動め非線形解析 (19aQC-4) (2007)
  • Author(s): 永島 芳彦他
  • Journal Title: 日本物理学会2007年春季大会講演概要集第2分冊 第62巻・1号 Pages: 196-196
• [Journal Article] 変調不安定性を利用した密度揺動によるzonal flow観測 (20pQE-12) (2007)
  • Author(s): 永島 芳彦他
  • Journal Title: 日本物理学会2007年春季大会講演概要集第2分冊 第62巻・1号 Pages: 226-226
• [Journal Article] プラズマ乱流の実験研究 (2006)
  • Author(s): 永島 芳彦他
  • Journal Title: RIAMフォーラム2006講演要旨 Pages: 31-34
• [Journal Article] Drift Wave Turbulence in Helicon High-Density Linear Plasma II : Fluctuation Dynamics (JP1.00087) (2006)
  • Author(s): Y.Nagashima, et al.
  • Journal Title: Bulletin of 48th Annual Meeting on APS, Division of Plasma Physics, 2006 Pages: 118-118
• [Journal Article] プラズマ揺動計測による乱流輸送の研究 (II-5) (2006)
  • Author(s): 永島 芳彦他
  • Journal Title: プラズマ・核融合学会第23回年会予稿集 Pages: 17-17
• [Journal Article] Large Mirror装置における乱流の遷移過程の観測 (A1) (2006)
  • Author(s): 永島 芳彦他
  • Journal Title: プラズマ・核融合学会 九州・沖縄・山口支部第10回支部大会 研究発表論文集 Pages: 13-13
• [Presentation] Reynolds stress measurements for investigation of nonlinear processes of turbulence in the Large Mirror Device and Large Mirror Device-Upgrade(FB.O1-X-3) (2008)
  • Author(s): Y. Nagashima, S.-I. Itoh, K. Itoh, A. Fujisawa, S. Inagaki, Y. Kawai, S. Shinohara, M. Fukao, T. Yamada, K. Terasaka, T. Maruta, K. Kamataki, H. Arakawa, M. Yagi, N. Kasuya, G.R. Tynan, P.H. Diamond, and Y. Takase
  • Organizer: 14th International Congress on Plasma Physics
  • Place of Presentation: Fukuoka, Japan
• [Presentation] Coexistence of the drift wave spectrum and low-frequency zonal flow potential in cylindrical laboratory plasmas(Europhysics Conference Abstracts (2008), P5.158) (2008)
  • Author(s): Y. Nagashima, S.-I. Itoh, S. Shinohara, M. Fukao, A. Fujisawa, K. Terasaka, T.Nishijima, M. Kawaguchi, Y. Kawai, N. Kasuya, G.R. Tynan, P.H. Diamond, M. Yagi, S. Inagaki, T. Yamada, K. Kamataki, T. Maruta and K. Itoh
  • Organizer: 35th European Physical Society Conference on Plasma Physics
  • Place of Presentation: Hersonissos, Crete, Greece
• [Presentation] Coexistence of zonal flows and drift wave turbulence in a linear plasma(25pRE-5) (2008)
  • Author(s): Y. Nagashima, S.-I. Itoh, S. Shinohara, M. Fukao, A. Fujisawa, K. Terasaka, T. Nishizima, M. Kawaguchi, N. Kasuya, Y. Kawai, G.R. Tynan, P.H. Diamond, M. Yagi, S. Inagaki, T. Yamada, T. Maruta, K. Kamataki, and K. Itoh
  • Organizer: 第63回日本物理学会年会
  • Place of Presentation: (口頭)
• [Presentation] Coexistence of the drift wave spectrum and low-frequency zonal flow potential in cylindrical laboratory plasmas (2008)
  • Author(s): Y. Nagashima, et.al.
  • Organizer: 35th Euro. Phys. Soc. Plasma Phys. Conf
  • Place of Presentation: Crete, Greece
• [Presentation] Reynolds stress measurements for investigation of nonlinear processes of turbulence in the Large Mirror Device and Large Mirror Device-Upgrade (2008)
  • Author(s): Y. Nagashima, et.al.
  • Organizer: International Congress on Plasma Physics (ICPP) 2008
  • Place of Presentation: Fukoka, Japan
• [Presentation] Multi-Channel Reynolds Stress Probes (2007)
  • Author(s): Y, Nagashima, et. al.
  • Organizer: プラズマ・核融合学会
  • Place of Presentation: イーグレ姫路、愛媛
  • Year and Date: 2007-11-28
• [Presentation] Multi-channel Reynolds stress probes(28aB15P) (2007)
  • Author(s): Y. Nagashima, A. Fujisawa, S. Inagaki, M. Fukao, Y. Kawai, T. Yamada, K. Kamataki, T. Maruta, M. Yagi, S. Shinohara, K. Itoh and S.-I. Itoh
  • Organizer: 第24回プラズマ・核融合学会年会
  • Place of Presentation: (ポスター)
• [Presentation] Identification of the parametric-modulational instability of the drift wave-zonal flow system in a cylindrical magnetized plasma(Bulletin of the American Physical Society, Annual Meeting of the Division of Plasma Physics, 2008, YP1.00073) (2007)
  • Author(s): Y. Nagashima, S.-I. Itoh, S. Shinohara, M. Fukao, A. Fujisawa, K. Terasaka, T.Nishijima, M. Kawaguchi, Y. Kawai, N. Kasuya, G.R. Tynan, P.H. Diamond, M. Yagi, S. Inagaki, T. Yamada, K. Kamataki, T. Maruta and K. Itoh
  • Organizer: 49th Annual Meeting of the American Physical Society Division of Plasma Physics
  • Place of Presentation: Orlando, Florida, USA
• [Presentation] Advanced studies by using the geodesic acoustic mode measurements: experimental identification of the separatrix location and search for zonal flows from the envelope of turbulent density fluctuation(Europhysics Conference Abstracts (2007), P2.047) (2007)
  • Author(s): Y. Nagashima, K. Itoh, A. Fujisawa, S.-I. Itoh, M. Yagi, K. Hoshino, K. Shinohara, T. Ido, Y. Miura, A. Ejiri, Y. Takase and JFT-2M group
  • Organizer: 34th European Physical Society Conference on Plasma Physics
  • Place of Presentation: Warsaw, Poland
• [Presentation] 変調不安定性を利用した密度揺動によるzonal flow観測(20pQE-12) (2007)
  • Author(s): 永島芳彦, 伊藤公孝A, 伊藤早苗 (他)
  • Organizer: 日本物理学会春季大会
  • Place of Presentation: (口頭)
• [Presentation] 高密度直線プラズマ中のドリフト波乱流実験VIII(揺動の非線形解析)(19aQC-4) (2007)
  • Author(s): 永島芳彦, 篠原俊二郎, 伊藤公孝 (他)
  • Organizer: 日本物理学会春季大会
  • Place of Presentation: (口頭)
• [Presentation] Drift wave turbulence in helicon high-density linear plasma II: fluctuation dynamics(Bulletin of the American Physical Society, Annual Meeting of the Division of Plasma Physics, 2006)(JP1.00087) (2006)
  • Author(s): Y. Nagashima, S.-I. Itoh, S. Shinohara, T. Nishijima, K. Kawaguchi, K. Terasaka, T. Yamada, T. Maruta, Y. Kawai, M. Yagi, K. Itoh, A. Fujisawa, G.R. Tynan
  • Organizer: 48th Annual Meeting of the American Physical Society Division of Plasma Physics
  • Place of Presentation: Philadelphia, USA
• [Presentation] シンポジウム講演: プラズマ揺動計測による乱流輸送の研究(学術シンポジウムII-5) (2006)
  • Author(s): Y. Nagashima
  • Organizer: 第23回プラズマ・核融合学会年会
  • Place of Presentation: (口頭)
• [Presentation] Large Mirror装置における乱流の遷移過程の観測(A-1) (2006)
  • Author(s): 永島芳彦, 伊藤公孝, 伊藤早苗 (他)
  • Organizer: 第10回プラズマ・核融合学会九州支部会
  • Place of Presentation: (口頭)
• [Presentation] プラズマ乱流の実験研究 (2006)
  • Author(s): 永島芳彦, 伊藤公孝, 伊藤早苗 (他)
  • Organizer: RIAM Forum 2006
  • Place of Presentation: (口頭)
• [Remarks] 第3回日本物理学会若手奨励賞を受賞(日本物理学会領域2、2009年3月)
• [Remarks] 第11回学術奨励賞(飯吉厚夫特別賞)を受賞(プラズマ・核融合学会、2006年11月)
• [Remarks] 招待講演: Special Plasma Physics Seminar, Y. Nagashima Mayer Hall, University of California, San Diego, May 16th, (2007)
• [Remarks]
  • URL: http://fusion.k.u-tokyo.ac.jp/
• [Remarks]
  • URL: http://fusion.k.u-tokyo.ac.jp/
• [Remarks]
  • URL: http://www.riam.kyushu-u.ac.jp/sanny/index-j.html