Spatiotemporal structure analysis of turbulence in a high-temperature heterogeneous magnetized plasma

2008 Fiscal Year Final Research Report

• Project/Area Number: 19760597
• 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
• Principal Investigator: YAMADA Takuma The University of Tokyo, 大学院新領域創成科学研究科, 助教 (90437773)
• Project Period (FY): 2007 – 2008
• Keywords: プラズマ閉込め / 安定性

Research Abstract

周方向静電プローブアレーを用い、高密度直線プラズマの電子密度揺動を測定した。直線プラズマの乱流構造を解析することで、核融合プラズマ内に起きる輸送の増加・抑制の理解に貢献することが出来る。本研究により、プラズマ内のミクロな乱流がそれより大きい構造を組織するという現象が観測できた。この構造は理論的には予測されていたが、直線プラズマにおいて実測されたのは初めてである。

Research Products

• [Journal Article] Anatomy of plasma turbulence (2008)
  • Author(s): T. Yamada, S.-I. Itoh, T. Maruta, N. Kasuya, Y. Nagashima, S. Shinohara, K. Terasaka, M. Yagi, S. Inagaki, Y. Kawai, A. Fujisawa and K. Itoh
  • Journal Title: Nature Phys 4 Pages: 721-725
  • Peer Reviewed
• [Journal Article] Experimental Study of Drift Wave Turbulence on Linear Plasmas (2008)
  • Author(s): T. Yamada, S.-I. Itoh, T. Maruta, N. Kasuya, S. Shinohara, Y. Nagashima, M. Yagi, K. Terasaka, S. Inagaki, Y. Kawai, M. Fukao, A. Fujisawa and K. Itoh
  • Journal Title: Plasma Fusion Res 3 Pages: 044/1-5
  • Peer Reviewed
• [Journal Article] Spatiotemporal Behavior of Drift Waves in LMD-U (2008)
  • Author(s): T. Yamada, S.-I. Itoh, K. Terasaka, N. Kasuya, Y. Nagashima, S. Shinohara, T Maruta, M. Yagi, S. Inagaki, Y. Kawai, A. Fujisawa and K. Itoh
  • Journal Title: Plasma Fusion Res 3 Pages: S1021/1-4
  • Peer Reviewed
• [Journal Article] Detection of Cascading in Drift Wave Turbulence Using Probe Array in Linear Plasmas (2007)
  • Author(s): T. Yamada, S.-I. Itoh, T. Maruta, S. Shinohara, N. Kasuya, Y. Nagashima, M. Yagi, K. Terasaka, M. Kawaguchi, S Inagaki, Y. Kawai, M. Fukao, A. Fujisawa and K. Itoh
  • Journal Title: Plasma Fusion Res 2 Pages: 051/1-3
  • Peer Reviewed
• [Journal Article] Fine positioning of a poloidal probe array (2007)
  • Author(s): T. Yamada, Y. Nagashima, S. Inagaki, Y. Kawai, M. Yagi, S.-I. Itoh, T. Maruta, S. Shinohara, K. Terasaka, M. Kawaguchi, M. Fukao, A. Fujisawa and K. Itoh
  • Journal Title: Rev. Sci. Instrum 78 Pages: 123501/1-5
  • Peer Reviewed
• [Journal Article] Measurement of Nonlinear Mode Couplings in the Large Mirror Device-Upgrade
  • Author(s): T. Yamada, S.-I. Itoh, S. Inagaki, Y. Nagashima, S. Shinohara, T. Maruta, K. Terasaka, K. Kamataki, N. Kasuya, M. Yagi, Y. Kawai, A. Fujisawa and K. Itoh
  • Journal Title: J. Plasma Fusion Res. SERIES (印刷中)
  • Peer Reviewed
• [Presentation] 直線プラズマにおけるドリフト波乱流実験 (2008)
  • Author(s): 山田 琢磨
  • Organizer: 第24回プラズマ・核融合学会年会
  • Place of Presentation: 兵庫
  • Year and Date: 2008-11-28
• [Presentation] Measurement of Drift Wave Turbulence in the Large Mirror Device-Upgrade (2008)
  • Author(s): T. Yamada
  • Organizer: Intl. Congress on Plasma Physics 2008
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2008-09-08
• [Presentation] 直線プラズマにおけるメゾスケール構造の観測 (2008)
  • Author(s): 山田 琢磨
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 大阪
  • Year and Date: 2008-03-25
• [Presentation] Nonlinear mode couplings in linear plasmas (2008)
  • Author(s): T. Yamada
  • Organizer: The US-Japan Workshop on Magnetic Reconnection 2008
  • Place of Presentation: Okinawa, Japan
  • Year and Date: 2008-03-03
• [Presentation] Nonlinear Coupling between Drift Waves and Streamers in LMD-U (2007)
  • Author(s): T. Yamada
  • Organizer: APS49th Annual Meeting of DPP
  • Place of Presentation: Florida, USA
  • Year and Date: 2007-11-14
• [Presentation] Spatiotemporal Behavior of Drift Waves in LMD-U (2007)
  • Author(s): T. Yamada
  • Organizer: 17th Intl. Toki Conference on Physics of Flows and Turbulence in Plasmas
  • Place of Presentation: Gifu, Japan
  • Year and Date: 2007-10-16