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Scandate Cathode for High Power Long Life Electric Propulsion Project

Summary

Type of release
a one-off release of a single dataset

Data Licence
Not Applicable

Content Licence
Creative Commons CCZero

Verification
automatically awarded

Release Date
9 April 2015
Modified Date
8 July 2015
Publishers
National Aeronautics and Space Administration
Keywords
completed, glenn-research-center, project
Identifier
scandate-cathode-for-high-power-long-life-electric-propulsion-project
Landing Page
http://techport.nasa.gov/view/16796
Maintainers
Gary Jahns gary.c.jahns@nasa.gov
Language
en-US

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Description

Scandate cathodes are proposed as a way to boost performance and life for electric space propulsion systems. This company has recently demonstrated breakthrough performance on these cathodes in other formats. We have demonstrated emission of 5 Amps/cm2 at 850 degrees CB, which is 200 degrees C below that of conventional cathodes. At this temperature they should live at least 100,000 hours. This makes scandate cathodes a candidate for use in deep space missions. In Phase I we propose construction and testing of several hollow scandate cathodes. We propose to do both vacuum and ion environment characterization on them. In Phase II we will begin active collaboration with NASA to test these cathodes in complete ion thrusters.

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