Magnetohydrodynamic Simulation of Kink Instability and Plasma Flow during Sustainment of a Coaxial Gun Spheromak

• KANKI Takashi

  Department of Maritime Science and Technology, Japan Coast Guard Academy, Kure, Hiroshima 737-8512, Japan

• NAGATA Masayoshi

  Department of Electrical Engineering and Computer Sciences, University of Hyogo, Himeji, Hyogo 671-2280, Japan

• KAGEI Yasuhiro

  Research Organization for Information Science & Technology, Tokai, Ibaraki 319-1106, Japan

抄録

Kink instability and the subsequent plasma flow during the sustainment of a coaxial gun spheromak are investigated by three-dimensional nonlinear magnetohydrodynamic simulations. Analysis of the parallel current density λ profile in the central open column revealed that the n = 1 mode structure plays an important role in the relaxation and current drive. The toroidal flow (v_t ≈ 37 km/s) is driven by magnetic reconnection occurring as a result of the helical kink distortion of the central open column during repetitive plasmoid ejection and merging.

収録刊行物

• Plasma and Fusion Research

  Plasma and Fusion Research 5 S2055-S2055, 2010

  一般社団法人 プラズマ・核融合学会

キーワード

• spheromak
• coaxial helicity injection
• MHD relaxation
• kink instability
• plasma flow
• simulation

詳細情報

• CRID: 1390001205253800704
• NII論文ID: 130000669045
• DOI: 10.1585/pfr.5.s2055
• ISSN: 18806821
• Web Site: http://www.jstage.jst.go.jp/article/pfr/5/0/5_0_S2055/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可