Electron Cross-field Transport in a Low Power Cylindrical Hall Thruster

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Conventional annular Hall thrusters become inefficient when scaled to low power. Cylindrical Hall thrusters, which have lower surface-to-volume ratio, are therefore more promising for scaling down. They presently exhibit performance comparable with conventional annular Hall thrusters. Electron cross-field transport in a 2.6 cm miniaturized cylindrical Hall thruster (100 W power level) has been studied through the analysis of experimental data and Monte Carlo simulations of electron dynamics in the thruster channel. The numerical model takes into account elastic and inelastic electron collisions with atoms, electron-wall collisions, including secondary electron emission, and Bohm diffusion. We show that in order to explain ... continued below

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1.2 MB pages

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Smirnov, A.; Raitses, Y. & Fisch, N.J. June 24, 2004.

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Conventional annular Hall thrusters become inefficient when scaled to low power. Cylindrical Hall thrusters, which have lower surface-to-volume ratio, are therefore more promising for scaling down. They presently exhibit performance comparable with conventional annular Hall thrusters. Electron cross-field transport in a 2.6 cm miniaturized cylindrical Hall thruster (100 W power level) has been studied through the analysis of experimental data and Monte Carlo simulations of electron dynamics in the thruster channel. The numerical model takes into account elastic and inelastic electron collisions with atoms, electron-wall collisions, including secondary electron emission, and Bohm diffusion. We show that in order to explain the observed discharge current, the electron anomalous collision frequency {nu}{sub B} has to be on the order of the Bohm value, {nu}{sub B} {approx} {omega}{sub c}/16. The contribution of electron-wall collisions to cross-field transport is found to be insignificant.

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1.2 MB pages

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INIS; OSTI as DE00828197

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  • Other Information: PBD: 24 Jun 2004

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  • Report No.: PPPL-3970
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/828197 | External Link
  • Office of Scientific & Technical Information Report Number: 828197
  • Archival Resource Key: ark:/67531/metadc788939

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  • June 24, 2004

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  • Dec. 3, 2015, 9:30 a.m.

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  • June 10, 2016, 5:57 p.m.

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Smirnov, A.; Raitses, Y. & Fisch, N.J. Electron Cross-field Transport in a Low Power Cylindrical Hall Thruster, report, June 24, 2004; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc788939/: accessed August 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.