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Title: Cylindrical geometry hall thruster

Abstract

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.

Inventors:
 [1];  [1]
  1. (Princeton, NJ)
Issue Date:
Research Org.:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ
OSTI Identifier:
874722
Patent Number(s):
6448721
Assignee:
General Plasma Technologies LLC (Princeton, NJ) PPPL
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
cylindrical; geometry; thruster; apparatus; method; thrusting; plasma; utilizing; accelerated; substantially; axial; direction; operation; power; employs; size; components; including; ceramic; channel; center; pole; piece; conventional; annular; design; eliminated; greatly; reduced; efficient; accomplished; magnetic; fields; substantial; radial; component; propellant; gas; ionized; optimal; location; improvement; segmented; electrodes; produce; localized; voltage; drops; optimally; prescribed; locations; differs; suited; scaling; deal; surface; volume; magnetic field; axial direction; /315/313/

Citation Formats

Raitses, Yevgeny, and Fisch, Nathaniel J. Cylindrical geometry hall thruster. United States: N. p., 2002. Web.
Raitses, Yevgeny, & Fisch, Nathaniel J. Cylindrical geometry hall thruster. United States.
Raitses, Yevgeny, and Fisch, Nathaniel J. Tue . "Cylindrical geometry hall thruster". United States. https://www.osti.gov/servlets/purl/874722.
@article{osti_874722,
title = {Cylindrical geometry hall thruster},
author = {Raitses, Yevgeny and Fisch, Nathaniel J.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

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