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Spatial retarding field energy analyzer measurements downstream of a helicon double layer plasma

Cox, W.; Charles, C.; Boswell, R. W.; Hawkins, R.

Description

Spatial ion energy measurements using a retarding field energy analyzer are performed in the exhaust of a 0.30mTorr, 250W helicon double layerplasma to investigate the divergence of the argon ion beam formed by acceleration in the double layer. Various divergence angles are computed by considering the radial distribution of beam density; the average beam ion diverging by 9°. The efficiency at which momentum is imparted parallel to the longitudinal axis of the thruster is calculated to be 98%....[Show more]

CollectionsANU Research Publications
Date published: 2008-08-20
Type: Journal article
URI: http://hdl.handle.net/1885/16652
Source: Applied Physics Letters
DOI: 10.1063/1.2965866

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