Solitary radial electric field structure in tokamak plasmas

K. Itoh, S. I. Itoh, M. Yagi, A. Fukuyama

Research output: Contribution to journalLetter

29 Citations (Scopus)

Abstract

The solitary structure solution of the radial electric field [formula omitted] in the tokamak plasmas is obtained. It is shown to be stable under an external power supply, like a biased electrode at the edge. The radial gradient is governed by the ion viscosity and the nonlinearlity of the perpendicular conductivity. The radial structure of [formula omitted] and reduction of turbulent transport, which belong to key issues of the high confinement mode (H-Mode) [F. Wagner et al., Phys. Rev. Lett. 49, 1408 (1982)], are self-consistently determined. A bifurcation from a radially-uniform one to a solitary one occurs at a certain applied voltage, and a hysteresis is associated.

Original languageEnglish
Pages (from-to)4121-4123
Number of pages3
JournalPhysics of Plasmas
Volume5
Issue number12
DOIs
Publication statusPublished - Dec 1998

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electric fields
power supplies
hysteresis
viscosity
conductivity
gradients
electrodes
electric potential
ions

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Itoh, K., Itoh, S. I., Yagi, M., & Fukuyama, A. (1998). Solitary radial electric field structure in tokamak plasmas. Physics of Plasmas, 5(12), 4121-4123. https://doi.org/10.1063/1.873145

Solitary radial electric field structure in tokamak plasmas. / Itoh, K.; Itoh, S. I.; Yagi, M.; Fukuyama, A.

In: Physics of Plasmas, Vol. 5, No. 12, 12.1998, p. 4121-4123.

Research output: Contribution to journalLetter

Itoh, K, Itoh, SI, Yagi, M & Fukuyama, A 1998, 'Solitary radial electric field structure in tokamak plasmas', Physics of Plasmas, vol. 5, no. 12, pp. 4121-4123. https://doi.org/10.1063/1.873145
Itoh, K. ; Itoh, S. I. ; Yagi, M. ; Fukuyama, A. / Solitary radial electric field structure in tokamak plasmas. In: Physics of Plasmas. 1998 ; Vol. 5, No. 12. pp. 4121-4123.
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