[Table of Contents]

Plasma and Fusion Research

Volume 1, 037 (2006)

Rapid Communications

Geodesic Acoustic Eigenmodes
Kimitaka ITOH, Sanae-I. ITOH1), Patrick H. DIAMOND2), Akihide FUJISAWA, Masatoshi YAGI1), Tetsuo WATARI, Yoshihiko NAGASHIMA1) and Atsushi FUKUYAMA3)
National Institute for Fusion Science
1)
Research Institute for Applied Mechanics, Kyushu University
2)
Department of Physics, University of California San Diego
3)
Department of Nuclear Engineering, Kyoto University
(Received 13 March 2006 / Accepted 10 June 2006 / Published 24 July 2006)

Abstract

The eigenmode of a geodesic acoustic mode in the presence of a temperature gradient is discussed. Eigenmodes are obtained and the characteristic wavelength scales as ρi2/3LT1/3 (ρi: ion gyroradius, LT: temperature gradient scale length). The direction of propagation is discussed.

Keywords

geodesic acoustic mode, zonal flow, eigenmode, eigenfrequency, temperature gradient

DOI: 10.1585/pfr.1.037

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References

  • [1] P.H. Diamond, S.-I. Itoh, K. Itoh and T.S. Hahm, Plasma Phys. Control. Fusion 47, R35 (2005).
  • [2] N. Winsor, J.L. Johnson and J.M. Dawson, Phys. Fluids 11, 2448 (1968).
  • [3] K. Hallatschek and D. Biskamp, Phys. Rev. Lett. 86, 1223 (2001).
  • [4] K. Itoh, K. Hallatschek and S.-I. Itoh, Plasma Phys. Control. Fusion 47, 451 (2005).
  • [5] Y. Hamada et al., Fusion Eng. Des. 34-35, 663 (1997).
  • [6] T. Ido et al., Nucl. Fusion 46, 512 (2006).
  • [7] G.R. McKee et al., Plasma Phys. Control. Fusion 45, A477 (2003).
  • [8] G.D. Conway et al., Plasma Phys. Control. Fusion 47, 1165 (2005).
  • [9] Y. Nagashima et al., Phys. Rev. Lett. 95, 095002 (2005).
  • [10] A. Fujisawa et al., Plasma Phys. Control. Fusion 48, S31 (2006).
  • [11] T. Ido et al., Plasma Phys. Control. Fusion 48, S41 (2006).
  • [12] V.B. Lebedev, P.N. Yushmaanov, P.H. Diamond, S.V. Novakovskii and A.I. Smolyakov, Phys. Plasmas 3, 3023 (1996).
  • [13] S.V. Novakovskii, C.S. Liu, R.Z. Sagdeev and M.N. Rosenbluth, Phys. Plasmas 4, 4272 (1997).
  • [14] T. Watari et al., Phys. Plasmas 12, 062304 (2005).
  • [15] H. Sugama and T-H. Watanabe, Phys. Plasmas 13, 012501 (2006).
  • [16] Z. Gao et al., submitted to Phys. Plasmas.
  • [17] H. Sanuki, Phys. Fluids 27, 2500 (1984).

This paper may be cited as follows:

Kimitaka ITOH, Sanae-I. ITOH, Patrick H. DIAMOND, Akihide FUJISAWA, Masatoshi YAGI, Tetsuo WATARI, Yoshihiko NAGASHIMA and Atsushi FUKUYAMA, Plasma Fusion Res. 1, 037 (2006).