中国物理B ›› 2012, Vol. 21 ›› Issue (9): 95201-095201.doi: 10.1088/1674-1056/21/9/095201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Response of plasma turbulence against externally-controlled perturbations

S. I. Itoha b, K. Itohb c   

  1. a Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan;
    b Itoh Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan;
    c National Institute for Fusion Science, Toki 509-5292, Japan
  • 收稿日期:2012-01-12 修回日期:2012-04-09 出版日期:2012-08-01 发布日期:2012-08-01
  • 基金资助:
    Project supported by Grants-in-aid for Scientific Research of JSPF, Japan (Grant Nos. 21224014 and 23244113), the Collaboration Programs of NIFS (Grant No. NIFS10KOAP023), and the RIAM of Kyushu University and Asada Science Foundation.

Response of plasma turbulence against externally-controlled perturbations

S. I. Itoha b, K. Itohb c   

  1. a Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan;
    b Itoh Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan;
    c National Institute for Fusion Science, Toki 509-5292, Japan
  • Received:2012-01-12 Revised:2012-04-09 Online:2012-08-01 Published:2012-08-01
  • Contact: S. -I. Itoh E-mail:s-iitoh@riam.kyushu-u.ac.jp
  • Supported by:
    Project supported by Grants-in-aid for Scientific Research of JSPF, Japan (Grant Nos. 21224014 and 23244113), the Collaboration Programs of NIFS (Grant No. NIFS10KOAP023), and the RIAM of Kyushu University and Asada Science Foundation.

摘要: A theory of the dynamic response of the turbulent plasma against the externally-controlled perturbations is reported. Based on the Mori's method [Prog. Theor. Phys. 33 423 (1965)], the nonlinear force is assumed to be separated into the memory function and the nonlinear fluctuating force. The former corresponds to the damping term, and the latter is categorized into the noise term. The response of the turbulent plasma against the externally-controlled source is formulated. The response kernel, which connects the externally-controlled source and the response of the turbulent field, is shown to have both the nonlocal property (in space) and the non-Markovian response (in time). A discussion is made on the nonlocal and non-Markovian response, including the case of disparate-scale interactions. A new method is proposed to observe experimentally the nonlocal interaction in the drift wave turbulence via the zonal flows.

关键词: turbulent transport, nonlocal and non-Markovian response

Abstract: A theory of the dynamic response of the turbulent plasma against the externally-controlled perturbations is reported. Based on the Mori's method [Prog. Theor. Phys. 33 423 (1965)], the nonlinear force is assumed to be separated into the memory function and the nonlinear fluctuating force. The former corresponds to the damping term, and the latter is categorized into the noise term. The response of the turbulent plasma against the externally-controlled source is formulated. The response kernel, which connects the externally-controlled source and the response of the turbulent field, is shown to have both the nonlocal property (in space) and the non-Markovian response (in time). A discussion is made on the nonlocal and non-Markovian response, including the case of disparate-scale interactions. A new method is proposed to observe experimentally the nonlocal interaction in the drift wave turbulence via the zonal flows.

Key words: turbulent transport, nonlocal and non-Markovian response

中图分类号:  (Plasma turbulence)

  • 52.35.Ra
52.35.Mw (Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.)) 52.35.Kt (Drift waves)