Life time of plasma states near transition boundary

Sanae I. Itoh, Kimitaka Itoh, Masatoshi Yagi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The stochastic trigger of the neoclassical tearing mode (NTM) in toroidal confinement plasmas by the background turbulence is studied. The life time is given by the inverse of the statistical average of transition rate. On the basis of the statistical theory of a plasma turbulence, the life time of the state free from the NTM is obtained. The dependence on the plasma parameters is explicitly shown. The beta limit by the NTM is found to be diffused. This gives a new insight for the database of operational boundary of toroidal plasmas.

Original languageEnglish
Pages (from-to)947-950
Number of pages4
Journaljournal of the physical society of japan
Issue number3
Publication statusPublished - Mar 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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