Electron Cross-field Transport in a Miniaturized 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 more promising for scaling down. They presently exhibit performance comparable with conventional annular Hall thrusters. The present paper gives a review of the experimental and numerical investigations of electron crossfield transport in the 2.6 cm miniaturized cylindrical Hall thruster (100 W power level). We show that, in order to explain the discharge current observed for the typical operating conditions, the electron anomalous collision frequency {nu}{sub b} has to be on the order of the Bohm value, {nu}{sub B} {approx} {omega}{sub ... continued below

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Smirnov Artem, Raitses Yevgeny, Fisch Nathaniel J October 14, 2005.

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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 more promising for scaling down. They presently exhibit performance comparable with conventional annular Hall thrusters. The present paper gives a review of the experimental and numerical investigations of electron crossfield transport in the 2.6 cm miniaturized cylindrical Hall thruster (100 W power level). We show that, in order to explain the discharge current observed for the typical operating conditions, 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. The optimal regimes of thruster operation at low background pressure (below 10{sup -5} Torr) in the vacuum tank appear to be different from those at higher pressure ({approx} 10{sup -4} Torr).

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  • IEEE Transaction on Plasma Science 34:2 Part 1 (April 2006) 132-141

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  • Report No.: PPPL-4118
  • Grant Number: DE-AC02-76CH03073
  • DOI: 10.2172/899585 | External Link
  • Office of Scientific & Technical Information Report Number: 899585
  • Archival Resource Key: ark:/67531/metadc888977

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  • October 14, 2005

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 18, 2016, 10:11 p.m.

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Smirnov Artem, Raitses Yevgeny, Fisch Nathaniel J. Electron Cross-field Transport in a Miniaturized Cylindrical Hall Thruster, report, October 14, 2005; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc888977/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.