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Title: Cylindrical geometry hall thruster

An apparatus and method for thrusting plasma, utilizing a Hall thruster with a cylindrical geometry, wherein ions are accelerated in substantially the axial direction. The apparatus is suitable for operation at low power. It employs small size thruster components, including a ceramic channel, with the center pole piece of the conventional annular design thruster eliminated or greatly reduced. Efficient operation is accomplished through magnetic fields with a substantial radial component. The propellant gas is ionized at an optimal location in the thruster. A further improvement is accomplished by segmented electrodes, which produce localized voltage drops within the thruster at optimally prescribed locations. The apparatus differs from a conventional Hall thruster, which has an annular geometry, not well suited to scaling to small size, because the small size for an annular design has a great deal of surface area relative to the volume.
 [1] ;  [1]
  1. (Princeton, NJ)
Publication Date:
OSTI Identifier:
Report Number(s):
US 6448721
DOE Contract Number:
Resource Type:
Research Org:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ
Country of Publication:
United States
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