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Current drive in a ponderomotive potential with sign reversal
N J Fisch1, J M Rax, I Y Dodin
1Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.
Abstract:
Noninductive current drive can be accomplished through ponderomotive forces with high efficiency when the potential changes sign over the interaction region. The effect, which operates somewhat like a Maxwell demon, can be practiced upon both ions and electrons. The current-drive efficiencies, in principle, might be higher than those possible with conventional rf current-drive techniques. It remains, however, for us to identify how the effect might be implemented in a magnetic fusion device in a practical manner.
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