In-FEEP Ion Beam Neutralization with Thermionic and Field Emission Cathodes

Colleen Marrese-Reading, J. Polk, Juergen Mueller , A. Owens, Martin Tajmar, C. Spindt, R. Fink

    Publikation: Beitrag in Buch oder TagungsbandVortrag mit Beitrag in TagungsbandBegutachtung


    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. The field emission cathodes significantly improved the power to thrust ratio of the thruster and neutralizer system. At 10 µN, the power-to-thrust ratio of the ion and electron source FEEP system decreased by 50% when the Spindt-type cathode was used. Measured plasma potential were consistent with theoretical results obtained previously.
    Titel27th International Electric Propulsion Conference
    PublikationsstatusVeröffentlicht - 2001
    Veranstaltung27th International Electric Propulsion Conference -
    Dauer: 1 Jan. 2001 → …


    Konferenz27th International Electric Propulsion Conference
    Zeitraum1/01/01 → …

    Research Field

    • Nicht definiert


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