Suppression of the tearing mode by energetic ions

Chris C. Hegna, A. Bhattacharjee

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


The effect of an energetic ion population on the nonlinear stability of a tearing mode of single helicity is determined using kinetic theory. A dynamical equation is derived for the magnetic-island width. It is shown that the island growth can be suppressed in a tokamak when the energetic ion-density profile peaks just outside the rational surface. Effects due to resistive interchanges and bootstrap currents are included in the model.

Original languageEnglish (US)
Pages (from-to)2056-2059
Number of pages4
JournalPhysical review letters
Issue number19
StatePublished - 1989
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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