Localized Density Fluctuation in the Downstream of Detached Plasma

• TAKEYAMA Kohei

  Graduate School of Engineering, Nagoya University

• OHNO Noriyasu

  Graduate School of Engineering, Nagoya University

• YOSHIKAWA Masayuki

  Plasma Research Center, University of Tsukuba

• TANAKA Hirohiko

  Graduate School of Engineering, Nagoya University

• KAJITA Shin

  Institute of Materials and Systems for Sustainability, Nagoya University

抄録

The density fluctuation was measured with a 70-GHz microwave interferometry system in the linear divertor plasma simulator NAGDIS-II while changing from the attached to the detached states. In the detached plasma, a large amplitude fluctuation of ≤ 10 kHz appeared in the peripheral region. The fluctuation has a maximum value at the neutral gas pressure of 30 - 34 mTorr. Further, the measurement of the light emission associated with the plasma recombination indicates that the large amplitude fluctuation is located at just downstream of the recombination front, in which the recombination process is the most enhanced.

収録刊行物

• Plasma and Fusion Research

  Plasma and Fusion Research 12 (0), 1202007-1202007, 2017

  一般社団法人 プラズマ・核融合学会

キーワード

• density fluctuation
• recombination front
• detached plasma
• microwave interferometer
• NAGDIS-II

詳細情報

• CRID: 1390001205254630016
• NII論文ID: 130005494557
• DOI: 10.1585/pfr.12.1202007
• ISSN: 18806821
• Web Site: https://www.jstage.jst.go.jp/article/pfr/12/0/12_1202007/_pdf
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可