Self-excitation of magnetic islands

E. Minardi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A mechanism of island self-excitation is discussed in detail, by studying the dynamical interaction, in a tokamak plasma, of a suitably defined ensemble of ions with the electrostatic field of densely packed island chains, assuming that the ion Larmor radius is larger than the island width. It is shown that the loss of particle kinetic energy, consequent to a transverse adiabatically slow drift produced by the interaction, drives an instability through which this energy is pumped directly into the islands. In this way the islands feed themselves through the ion-chain interaction.
Original languageEnglish
Article numberI03
Pages (from-to)1567 - 1578
Number of pages12
JournalNuclear Fusion
Volume34
Issue number12
DOIs
Publication statusPublished - 1994
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physics and Astronomy(all)

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