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Sputtering Holes with Ion BeamletsIon beamlets of predetermined configurations are formed by shaped apertures in the screen grid of an ion thruster having a double grid accelerator system. A plate is placed downstream from the screen grid holes and attached to the accelerator grid. When the ion thruster is operated holes having the configuration of the beamlets formed by the screen grid are sputtered through the plate at the accelerator grid.
Document ID
19740023156
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Byers, D. C. (NASA Lewis Research Center Cleveland, OH, United States)
Banks, B. A. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
July 30, 1974
Subject Category
Meteorology
Accession Number
74N31269
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-LEW-11646-1|US-PATENT-3,826,729
Patent Application
US-PATENT-APPL-SN-292686

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