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- W2331044076 abstract "Far field plasma characteristics for a twenty kilowatt microwav e High Power Electric Propulsion (HiPEP) rectangular forty one centimeter by ninety one centimeter ion engine were measured at the Glenn Research Center’s (GRC) Electric Propulsion Laboratory (EPL). All measurements were conducted in the large EPL Vacuum Facility (VF -6) chamber with 7.6 m diameter and 21 m length. Detector arrays were located downstream from the exit port of the ion thruster at the distances of 6-12 m . Three banks of detector arrays included fourteen Langmuir probes, two flat plate probes , and a Faraday Cup. Langmuir probe diagnostics yielded electron temperatures of 0.26 -0.36eV and low energy ion temperatures of 0.05 -0.08 eV . Faraday cup measurements provided just rough estimate for low e nergy ion current . Estimate d ion velocit ies varied within the range of 4.17 -5.5 km/s . Electron number densities were determined as (28 -40 )10 6 cm -3 , and the measured plasma potential s ranged between 1.76 V and 2.35 V. Additional diagnostics included two quartz crystal microbalances for measuring plasma cont amination due to the erosion of thruster electrodes , a quadrupole mass spectrometer , and an optical spectrometer." @default.
- W2331044076 created "2016-06-24" @default.
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- W2331044076 date "2007-06-15" @default.
- W2331044076 modified "2023-09-26" @default.
- W2331044076 title "High Power Electric Propulsion Discharge Characteristics: Vacuum Facility Ground Testing" @default.
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- W2331044076 doi "https://doi.org/10.2514/6.2007-3877" @default.
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