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Record Details

Record 1 of 59901
Power Dependence of the Electron Mobility Profile in a Hall Thruster
External Online Source: hdl:2014/45609
Author and Affiliation:
Jorns, Benjamin A.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Hofery, Richard H.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Mikellides, Ioannis G.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Abstract: The electron mobility profile is estimated in a 4.5 kW commercial Hall thruster as a function of discharge power. Internal measurements of plasma potential and electron temperature are made in the thruster channel with a high-speed translating probe. These measurements are presented for a range of throttling conditions from 150 - 400 V and 0.6 - 4.5 kW. The fluid-based solver, Hall2De, is used in conjunction with these internal plasma parameters to estimate the anomalous collision frequency profile at fixed voltage, 300 V, and three power levels. It is found that the anomalous collision frequency profile does not change significantly upstream of the location of the magnetic field peak but that the extent and magnitude of the anomalous collision frequency downstream of the magnetic peak does change with thruster power. These results are discussed in the context of developing phenomenological models for how the collision frequency profile depends on thruster operating conditions.
Publication Date: Jul 28, 2014
Document ID:
20160008253
(Acquired Jul 08, 2016)
Subject Category: SPACECRAFT PROPULSION AND POWER
Document Type: Conference Paper
Meeting Information: AIAA/ASME/SAE/ASEE Joint Propulsion Conference (JPC) ; 28-30 Jul. 2014; Cleveland, OH; United States
Meeting Sponsor: American Inst. of Aeronautics and Astronautics; Reston, VA, United States
American Society of Mechanical Engineers; Naperville, IL, United States
Society of Automotive Engineers, Inc.; New York, NY, United States
American Society for Electrical Engineers; United States
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 15p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: HALL THRUSTERS; PLASMA POTENTIALS; ELECTRIC POTENTIAL; ELECTRON MOBILITY; MAGNETIC FIELDS; ELECTRON ENERGY; COLLISION RATES; SOLAR ELECTRIC PROPULSION; PLASMAS (PHYSICS); ESTIMATING; HIGH SPEED
Availability Source: Other Sources
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