Particle and energy transport due to magnetic field-line reconnection in a tokamak

Satoru Iizuka, Yasujiroh Minamitani, Hiroshi Tanaca

Research output: Contribution to journalArticlepeer-review


Plasma behaviour during magnetic field-line reconnection which is driven by a rapid toroidal current reversal in a tokamak is investigated by calculating plasma flow speed from the magnetohydromatic equations with variables measured in the experiment. A strong plasma acceleration appears in the outside region of the X-type separatrix formed in the poloidal magnetic field lines. The induced electric field inside the plasma is evaluated directly from Ohm's law by using the fact that the toroidal current density vanishes during the current reversal. Then, plasma resistivity is estimated in the cross-section and the resulting value of energy flow is compared with that given by Poynting's theorem. It is found that the input energy is dissipated effectively through anomalous resistivity in the reconnection region.

Original languageEnglish
Pages (from-to)335-346
Number of pages12
JournalJournal of Plasma Physics
Issue number3
Publication statusPublished - 1987 Jun

ASJC Scopus subject areas

  • Condensed Matter Physics


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