Symmetry-Breaking of Turbulence Structure and Position Identification in Toroidal Plasmas

• ITOH Kimitaka

  Institute of Science and Technology Research, Chubu University Research Center for Plasma Turbulence, Kyushu University National Institute for Fusion Science

• ITOH Sanae-I.

  Research Center for Plasma Turbulence, Kyushu University Research Institute for Applied Mechanics, Kyushu University Department of Innovative Energy Science and Engineering, Graduate School of Engineering, Chubu University

• NAGASHIMA Yoshihiko

  Research Center for Plasma Turbulence, Kyushu University Research Institute for Applied Mechanics, Kyushu University

• YAMADA Takuma

  Research Center for Plasma Turbulence, Kyushu University Faculty of Arts and Science, Kyushu University

• KOSUGA Yusuke

  Research Center for Plasma Turbulence, Kyushu University Research Institute for Applied Mechanics, Kyushu University

• FUJISAWA Akihide

  Research Center for Plasma Turbulence, Kyushu University Research Institute for Applied Mechanics, Kyushu University

抄録

As a result of the progresses in the study of plasma turbulence, the picture of ‘multiple-scale turbulence' is widely accepted, and the ‘nonlinear excitation, nonlocal interaction, probabilistic transition' views have been developed. Along the paths of these progresses, importance of new problem, i.e., the symmetry-breaking of turbulence structure (such as up-down asymmetry, excitation of streamer, etc.) is gradually recognized. In this topical review article, we revisit these issues, and illuminate the possibilities that the new progresses (which will be brought about by studying the symmetry-breaking of turbulence) are expected. Examining theoretical predictions and preceding experimental achievements, new advancements, which will be realized, are explained. The experimental study of symmetry-breaking of turbulence structure ultimately requires to measure fluctuations (at all scales) over the whole plasma cross-section simultaneously. In addition, new type of demands can be imposed in measuring of fluctuations over the whole plasma cross-section simultaneously. One of such demands is the accuracy of the measurement position. Problems in this aspect are also discussed. This concise review is used to identify what will be discovered and how it will be reached in future experiments, in the subject of the symmetry-breaking of turbulence structure.

収録刊行物

• Plasma and Fusion Research

  Plasma and Fusion Research 13 (0), 1102113-1102113, 2018-10-05

  一般社団法人 プラズマ・核融合学会

キーワード

• plasma turbulence
• toroidal plasma
• plasma diagnostics
• symmetry-breaking

詳細情報

• CRID: 1390001288097752832
• NII論文ID: 130007529164
• DOI: 10.1585/pfr.13.1102113
• ISSN: 18806821
• Web Site: https://www.jstage.jst.go.jp/article/pfr/13/0/13_1102113/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可