Physics of collapse events in toroidal plasmas

Sanae Itoh, K. Itoh, H. Zushi, A. Fukuyama

Research output: Contribution to journalReview article

48 Citations (Scopus)

Abstract

A review is made of the crash phenomena in toroidal plasmas. The emphasis is placed on the physics that causes the crash of global plasma parameters. Recent progress in the measurement has provided a unified view of various crash phenomena, i.e. the sudden occurrence of the crash, the sensitivity (or probabilistic dependence) of the occurrence of the crash on the global parameters, and the abrupt excitation of a symmetry-breaking perturbation (magnetic trigger). Essential observations that describe the physics of collapse are surveyed. The theoretical study of the nonlinear plasma dynamics is overviewed. Theories of the onset and explosive growth, which are based on magnetic braiding, are discussed. As an example, a picture based on a turbulence-turbulence transition is explained. A picture based on hysteresis and bifurcation, not on the linear instability criterion, emerging from advanced measurements and recent progress, describes the basic physics of the collapse.

Original languageEnglish
Pages (from-to)879-929
Number of pages51
JournalPlasma Physics and Controlled Fusion
Volume40
Issue number6
DOIs
Publication statusPublished - Dec 1 1998

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crashes
toroidal plasmas
Physics
Plasmas
physics
Turbulence
turbulence
Hysteresis
occurrences
plasma dynamics
emerging
broken symmetry
actuators
hysteresis
perturbation
causes
sensitivity
excitation

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Cite this

Physics of collapse events in toroidal plasmas. / Itoh, Sanae; Itoh, K.; Zushi, H.; Fukuyama, A.

In: Plasma Physics and Controlled Fusion, Vol. 40, No. 6, 01.12.1998, p. 879-929.

Research output: Contribution to journalReview article

Itoh, Sanae ; Itoh, K. ; Zushi, H. ; Fukuyama, A. / Physics of collapse events in toroidal plasmas. In: Plasma Physics and Controlled Fusion. 1998 ; Vol. 40, No. 6. pp. 879-929.
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