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)


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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