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Ion Cyclotron Production by a Four-wave Interaction with a Helicon Pump

Sutherland, Orson; Giles, M; Boswell, Roderick


Ion cyclotron waves at approximately 0.7 the ion gyrofrequency have been observed experimentally in the large volume helicon reactor WOMBAT. These waves are highly localized along the axis of the device where a 8 cm diameter, 2 m long. Ar II plasma column is produced. Spectral measurements reveal a four-wave interaction where energy is down-converted to the ion cyclotron mode from the helicon pump. The experimental results are explained in terms of a filamentation type instability.

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.94.205002


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