[Table of Contents]

Plasma and Fusion Research

Volume 3, 005 (2008)

Rapid Communications

Observation of Simple Helical Structure in Low Aspect Ratio RFP Using Fast Camera
Takumi ONCHI, Nobuhiro NISHINO1), Ryuya IKEZOE, Akio SANPEI, Haruhiko HIMURA and Sadao MASAMUNE
Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
1)
Hiroshima University, Kagamiyama, Higashihiroshima 739-8527, Japan
(Received 9 October 2007 / Accepted 22 November 2007 / Published 29 January 2008)

Abstract

A fast camera clearly detected a simple helical structure in the visible-light emission region in the reversed field pinch (RFP) configuration. The observed structure is consistent with magnetic field structures deduced from magnetic measurements with the help of equilibrium reconstruction. The observed simple structure is probably an indication of the internally resonant kink mode structure in a low aspect ratio RFP configuration.

Keywords

reversed field pinch, low aspect ratio, fast camera, resistive MHD instabilities, helical structure

DOI: 10.1585/pfr.3.005

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References

  • [1] D.F. Escande et al., Phys. Rev. Lett. 85, 1662 (2000).
  • [2] K. Hayase et al., J. Plasma Fusion Res. 80, 721 (2004).
  • [3] D. Biskamp, Nonlinear Magnetohydrodynamics (Cambridge University Press, Cambridge 1993).
  • [4] S. Masamune et al., Trans. Fusion Sci. Technol. 51, 197 (2007).
  • [5] S. Masamune et al., J. Phys. Soc. Jpn. 76, 123501 (2007).
  • [6] N. Nishino et al., J. Plasma Fusion Res. 78, 1278 (2002).
  • [7] N. Nishino et al., J. Plasma Fusion Res. 80, 179 (2004).
  • [8] N. Nishino et al., Plasma Fusion Res. 1, 035 (2006).

This paper may be cited as follows:

Takumi ONCHI, Nobuhiro NISHINO, Ryuya IKEZOE, Akio SANPEI, Haruhiko HIMURA and Sadao MASAMUNE, Plasma Fusion Res. 3, 005 (2008).