Ion Cyclotron-Resonance Heating in a Toroidal Octupole
J. D. Barter and J. C. Sprott
University of Wisconsin, Madison,
Wisconsin 53706
(Received 10 February 1975)
ABSTRACT
rf power near the ion cyclotron-resonance frequency has been used to produce
a hundredfold increase (from <~ 1 to ~ 100 eV) in the ion temperature
in a toroidal octupole device. The heating produces no noticeable instabilities
or other deleterious effects except for a high reflux of neutrals from
the walls. The heating rate is consistent with theory and the limiting
ion temperature is determined by charge-exchange losses.
Ref: J. D. Barter and J. C. Sprott, Phys.
Rev. Lett. 34, 1607-1609 (1975)
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