L-H transport barrier formation: Monte Carlo simulation of the sheared E × B flow dynamics in tokamaks

Jukka Heikkinen (Corresponding Author), Timo Kiviniemi, A. Peeters

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)


Monte Carlo ion simulation and semi‐analytical calculation of the neoclassical radial current balance in a tokamak plasma edge show no spontaneous bifurcation of radial electric field Er in contrast with earlier orbit loss models, but bifurcation and a solitary Er generation by electrode polarization are seen. Strong orbit loss shear is found for H‐mode threshold conditions in ASDEX Upgrade, indicating that orbit loss is the major source of the shear for L‐H transition.

Original languageEnglish
Pages (from-to)431-436
JournalContributions to Plasma Physics
Issue number3-4
Publication statusPublished - 2000
MoE publication typeA1 Journal article-refereed


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