Transition to the H-mode by energetic electrons

K. Itoh, S. I. Itoh

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The effect of electron loss due to the toroidal ripple on the H-mode transition is studied. When energetic electrons exist in tokamaks, for example in the case of electron heating by lower hybrid (LH) waves, the edge electric field may exhibit bifurcation to more positive values. In this state, both the electron loss and the ion loss (such as direct orbit loss) are reduced. The criterion for the transition is derived. Comparison with the H-mode in JT-60 LH plasma shows qualitative agreement.

Original languageEnglish
Article numberI14
Pages (from-to)2243-2246
Number of pages4
JournalNuclear Fusion
Volume32
Issue number12
DOIs
Publication statusPublished - Dec 1 1992

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electrons
ripples
orbits
heating
electric fields
ions

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Transition to the H-mode by energetic electrons. / Itoh, K.; Itoh, S. I.

In: Nuclear Fusion, Vol. 32, No. 12, I14, 01.12.1992, p. 2243-2246.

Research output: Contribution to journalArticle

Itoh, K. ; Itoh, S. I. / Transition to the H-mode by energetic electrons. In: Nuclear Fusion. 1992 ; Vol. 32, No. 12. pp. 2243-2246.
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