Tearing mode instability due to anomalous resistivity near edge

A. Furuya, S. I. Itoh, M. Yagi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Tearing mode instability in the presence of microscopic turbulence is investigated. The effects of microscopic turbulence on tearing mode are taken as drags which are calculated by one-point renormalization method and mean-field approximation. These effects are reduced to effective diffusivities in reduced MHD equations. Using these equations, the stability analyses of the tearing mode are performed. It is shown that a finite amplitude of fluctuation enhances the growth rate of tearing mode. For very high values of turbulent diffusivities, marginally stable state exists. The effects of each turbulent diffusivity on mode stability are examined near marginal stability boundary. Parameter dependence of the resistive ballooning mode turbulence on tearing mode is analyzed as an example.

Original languageEnglish
Pages (from-to)375-380
Number of pages6
JournalContributions to Plasma Physics
Issue number3-4
Publication statusPublished - 2000

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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