Alpha effect of Alfvén waves and current drive in reversed-field pinches

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Abstract

Circularly polarized Alfvén waves give rise to an α-dynamo effect that can be exploited to drive parallel current. In a "laminar" magnetic the effect is weak and does not give rise to significant currents for realistic parameters (e.g., in tokamaks). However, in reversed-field pinches (RFPs) in which magnetic field in the plasma core is stochastic, a significant enhancement of the α effect occurs. Estimates of this effect show that it may be a realistic method of current generation in the present-day RFP experiments and possibly also in future RFP-based fusion reactors.

Original languageEnglish (US)
Pages (from-to)553-555
Number of pages3
JournalPhysics of Plasmas
Volume5
Issue number3
DOIs
StatePublished - Jan 1 1998
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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