Edge localized modes as new bifurcation in Tokamaks

Sanae I. Itoh, Kimitaka Itoh, Atsushi Fukuyama, Masatoshi Yagi

研究成果: Contribution to journalArticle査読

25 被引用数 (Scopus)

抄録

A model of giant edge localized modes in tokamaks is developed. The theory of self-sustained turbulence of a current-diffusive ballooning mode is extended. A bifurcation from the H mode to a third state with magnetic braiding, the M mode, is found to occur if the pressure gradient reaches a critical value. Nonlinear excitation of magnetic perturbation takes place, followed by catastrophic increase of transport. With backtransition to the HL mode, a new hysteresis is found in the gradient-flux relation. The process then repeats itself. Avalanche of transport catastrophe across the plasma radius is analyzed.

本文言語英語
ページ(範囲)920-923
ページ数4
ジャーナルPhysical review letters
76
6
DOI
出版ステータス出版済み - 1996

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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