Model of L to H-mode transition in Tokamak

Sanae I. Itoh, Kimitaka Itoh

Research output: Contribution to journalArticlepeer-review

423 Citations (Scopus)


A new model of L- to H-mode transition in tokamak plasmas is presented. Nonambipolar particle losses determine the consistent radial electric field near plasma periphery. A "cusp-type catastrophe" among the radial electric field, particle flux, and edge gradients is found. At the transition, plasma loss can take multiple values for one profile of density and temperature near the edge. A critical edge condition for the transition is obtained.

Original languageEnglish
Pages (from-to)2276-2279
Number of pages4
JournalPhysical review letters
Issue number22
Publication statusPublished - 1988

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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