Measurements of Plasma Potential Distribution in Segmented Electrode Hall Thruster

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Use of a segmented electrode placed at the Hall thruster exit can substantially reduce the voltage potential drop in the fringing magnetic field outside the thruster channel. In this paper, we investigate the dependence of this effect on thruster operating conditions and segmented electrode configuration. A fast movable emissive probe is used to measure plasma potential in a 1 kW laboratory Hall thruster with semented electrodes made of a graphite material. Relatively small probe-induced perturbations of the thruster discharge in the vicinity of the thruster exit allow a reasonable comparison of the measured results for different thruster configurations. It is ... continued below

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503 Kilobytes pages

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Raitses, Y.; Staack, D. & Fisch, N.J. October 16, 2001.

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Use of a segmented electrode placed at the Hall thruster exit can substantially reduce the voltage potential drop in the fringing magnetic field outside the thruster channel. In this paper, we investigate the dependence of this effect on thruster operating conditions and segmented electrode configuration. A fast movable emissive probe is used to measure plasma potential in a 1 kW laboratory Hall thruster with semented electrodes made of a graphite material. Relatively small probe-induced perturbations of the thruster discharge in the vicinity of the thruster exit allow a reasonable comparison of the measured results for different thruster configurations. It is shown that the plasma potential distribution is almost not sensitive to changes of the electrode potential, but depends on the magnetic field distribution and the electrode placement.

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503 Kilobytes pages

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OSTI as DE00788454

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  • 27th International Electric Propulsion Conference, Pasadena, CA (US), 10/14/2001--10/19/2001

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  • Report No.: Cfpaper-4359
  • Grant Number: AC02-76CH03073
  • Office of Scientific & Technical Information Report Number: 788454
  • Archival Resource Key: ark:/67531/metadc719374

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  • October 16, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 18, 2016, 1 p.m.

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Raitses, Y.; Staack, D. & Fisch, N.J. Measurements of Plasma Potential Distribution in Segmented Electrode Hall Thruster, article, October 16, 2001; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc719374/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.