Transport Dynamics and Multi-Scale Coupling of Turbulence in LHD

• INAGAKI Shigeru

  RIAM, Kyushu University, 6-1 Kasuga-Koen, Kasuga 816-8580, Japan

• TAMURA Naoki

  National Institute for Fusion Science,322-6 Oroshi-cho, Toki 509-5292, Japan

• NAGASHIMA Yoshihiko

  RIAM, Kyushu University, 6-1 Kasuga-Koen, Kasuga 816-8580, Japan

• TOKUZAWA Tokihiko

  National Institute for Fusion Science,322-6 Oroshi-cho, Toki 509-5292, Japan

• YAMADA Takuma

  RIAM, Kyushu University, 6-1 Kasuga-Koen, Kasuga 816-8580, Japan

• IDA Katsumi

  National Institute for Fusion Science,322-6 Oroshi-cho, Toki 509-5292, Japan

• MARUTA Takashi

  IGSES, Kyushu University, 6-1 Kasuga-Koen, Kasuga 816-8580, Japan

• KUBO Shin

  National Institute for Fusion Science,322-6 Oroshi-cho, Toki 509-5292, Japan

• TERASAKA Kenichi

  IGSES, Kyushu University, 6-1 Kasuga-Koen, Kasuga 816-8580, Japan

• SHIMOZUMA Takashi

  National Institute for Fusion Science,322-6 Oroshi-cho, Toki 509-5292, Japan

• NAGAYAMA Yoshio

  National Institute for Fusion Science,322-6 Oroshi-cho, Toki 509-5292, Japan

• KAWAHATA Kazuo

  National Institute for Fusion Science,322-6 Oroshi-cho, Toki 509-5292, Japan

• KOMORI Akio

  National Institute for Fusion Science,322-6 Oroshi-cho, Toki 509-5292, Japan

• SHINOHARA Shunjiro

  IGSES, Kyushu University, 6-1 Kasuga-Koen, Kasuga 816-8580, Japan

• FUJISAWA Akihide

  National Institute for Fusion Science,322-6 Oroshi-cho, Toki 509-5292, Japan

• YAGI Masatoshi

  RIAM, Kyushu University, 6-1 Kasuga-Koen, Kasuga 816-8580, Japan

• KAWAI Yoshinobu

  RIAM, Kyushu University, 6-1 Kasuga-Koen, Kasuga 816-8580, Japan

• ITOH Sanae-I.

  RIAM, Kyushu University, 6-1 Kasuga-Koen, Kasuga 816-8580, Japan

• ITOH Kimitaka

  National Institute for Fusion Science,322-6 Oroshi-cho, Toki 509-5292, Japan

• the LHD experimental group

  RIAM, Kyushu University, 6-1 Kasuga-Koen, Kasuga 816-8580, Japan

抄録

Spatiotemporal correlation of heat transport and micro- to meso- scale or macro-scale coupling of plasma turbulence are investigated in LHD plasmas, where fast propagation of a cold pulse and a non-local temperature rise are observed. Evidence of a timescale shorter than the diffusion time and a spatial scale longer than the micro-turbulence correlation length between core heat fluxes and edge temperature gradients is found. At the same time, an envelope of turbulent density fluctuations is also found to be modulated. Observation of low frequency (≤ 2 kHz) amplitude modulation of density fluctuation suggests the existence of meso- to macro-scale turbulent structures in the plasma, in which a non-local temperature rise takes place. Relationships between the turbulence with long radial correlation length and the edge-core coupling of heat transport are discussed.

収録刊行物

• Plasma and Fusion Research

  Plasma and Fusion Research 3 S1006-S1006, 2008

  一般社団法人 プラズマ・核融合学会

キーワード

• non-local transport
• fluctuation
• reflectometry
• LHD

詳細情報

• CRID: 1390001205254799744
• NII論文ID: 130000263951
• DOI: 10.1585/pfr.3.s1006
• ISSN: 18806821
• Web Site: http://www.jstage.jst.go.jp/article/pfr/3/0/3_0_S1006/_pdf
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可