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Low frequency plasma oscillations in a 6-kW magnetically shielded Hall thruster

Show simple item record Jorns, Benjamin A. Hofery, Richard R. 2014-03-05T20:55:34Z 2014-03-05T20:55:34Z 2013-07-15
dc.identifier.citation 49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, San Jose, California, July 14 - 17, 2013 en_US
dc.identifier.clearanceno CL#13-2562
dc.description.abstract The oscillations from 0-100 kHz in a 6-kW magnetically shielded thruster are experimen- tally characterized. Changes in plasma parameters that result from the magnetic shielding of Hall thrusters have the potential to significantly alter thruster transients. A detailed investigation of the resulting oscillations is necessary both for the purpose of determin- ing the underlying physical processes governing time-dependent behavior in magnetically shielded thrusters as well as for improving thruster models. In this investigation, a high speed camera and a translating ion saturation probe are employed to examine the spatial extent and nature of oscillations from 0-100 kHz in the H6MS thruster. Two modes are identified at 8 kHz and 75-90 kHz. The low frequency mode is azimuthally uniform across the thruster face while the high frequency oscillation is concentrated close to the thruster centerline with an m = 1 azimuthal dependence. These experimental results are discussed in the context of wave theory as well as published observations from an unshielded variant of the H6MS thruster. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2013 en_US
dc.subject channel erosion en_US
dc.subject BPT-4000 en_US
dc.title Low frequency plasma oscillations in a 6-kW magnetically shielded Hall thruster en_US
dc.type Preprint en_US

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