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NASA NTRS2002

In-FEEP ion beam neutralization with thermionic and field emission cathodes

Charge neutralization of an In-FEEP thruster was demonstrated with three different electron sources by zeroing the floating potential of the thruster and neutralizer system. The three cathodes used in the investigation include a mixed metal thermionic cathode, a carbon nanotube field emission cathode, and a Spindt-type Mo field emission array cathode.

field emission cathodes FEEP electric propulsion↗