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Field Emitter Cathodes and Electric Propulsion Systems

  • Colleen M. Marrese (a1), James E. Polk (a1) and Juergen Mueller (a1)

Abstract

Replacing hollow and filament cathodes with field emitter (FE) cathodes could significantly improve the scalability, power, and performance of some meso- and microscale Electric Propulsion (EP) systems. The propulsion system environments and requirements and the challenges in integrating these technologies are discussed to justify the recommended cathode configurations. Required cathode technologies include low work function coatings on Si or Mo Field Emitter Array (FEA) cathodes with arc protection and electrostatic ion filters.

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Field Emitter Cathodes and Electric Propulsion Systems

  • Colleen M. Marrese (a1), James E. Polk (a1) and Juergen Mueller (a1)

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