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Experimental evidence of a double layer in a large volume helicon reactor

Sutherland, Orson; Charles, Christine; Plihon, N; Boswell, Rod


The self-consistently generated current-free electric double layer (DL) is shown to scale up with the source tube diameter and appears not to be affected by rf driving frequency and changes in reactor geometry. This Letter presents the first simultaneous measurements of local plasma potential and beam energy as a function of axial position. The DL is shown to be no more than 5 mm thick (20 D lengths) and positioned just downstream of the maximum in the magnetic field gradient. Furthermore, its...[Show more]

CollectionsANU Research Publications
Date published: 2005-11-07
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.95.205002


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