Solitary radial electric field structure in tokamak plasmas

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

Research output: Contribution to journalLetterpeer-review

31 Citations (Scopus)


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
Issue number12
Publication statusPublished - Dec 1998

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


Dive into the research topics of 'Solitary radial electric field structure in tokamak plasmas'. Together they form a unique fingerprint.

Cite this