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Home / Publications / Journals / Fusion Science and Technology / Volume 65 / Number 1

Methods of Radio-Frequency Current Drive

N. J. Fisch

Fusion Science and Technology / Volume 65 / Number 1 / January 2014 / Pages 1-9

Lecture / dx.doi.org/10.13182/FST13-670

Radio-frequency waves can penetrate thermonuclear plasmas, depositing momentum and energy with great selectivity: in select resonant ions or electrons, in select resonant regions, and with select momentum. When these waves are injected asymmetrically with respect to the toroidal direction in tokamaks, they can drive a toroidal electric current. The advantage of driving this current by waves is that a tokamak reactor might then be operated in the steady state. This lecture will review the elementary processes of wave-particle interactions in plasma that underlie the current drive effect.

 
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