Theory of improved confinement in high- beta p tokamaks

A. Fukuyama, K. Itoh, S. I. Itoh, M. Yagi, M. Azumi

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


The dissipative self-organization of the plasma pressure and current in tokamaks is investigated through interactions between bootstrap current and the anomalous transport due to self-sustained turbulence. The strongly reduced magnetic shear due to the pressure-driven current and the magnetic axis shift cause a reduction in the anomalous transport, which enhances the plasma pressure and bootstrap current and leads to a transition to a high- beta p plasma. The threshold is given by beta p approximately=1. Simulation results are compared with experimental observations.

Original languageEnglish
Article number001
Pages (from-to)1385-1390
Number of pages6
JournalPlasma Physics and Controlled Fusion
Issue number9
Publication statusPublished - 1994

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics


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