NDLI: High frequency plasma generators for ion thrusters

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High frequency plasma generators for ion thrusters

Content Provider	NASA Technical Reports Server (NTRS)
Author	Goede, H. Fosnight, V. V. Divergilio, W. F.
Copyright Year	1981
Description	The results of a one year program to experimentally adapt two new types of high frequency plasma generators to Argon ion thrusters and to analytically study a third high frequency source concept are presented. Conventional 30 cm two grid ion extraction was utilized or proposed for all three sources. The two plasma generating methods selected for experimental study were a radio frequency induction (RFI) source, operating at about 1 MHz, and an electron cyclotron heated (ECH) plasma source operating at about 5 GHz. Both sources utilize multi-linecusp permanent magnet configurations for plasma confinement. The plasma characteristics, plasma loading of the rf antenna, and the rf frequency dependence of source efficiency and antenna circuit efficiency are described for the RFI Multi-cusp source. In a series of tests of this source at Lewis Research Center, minimum discharge losses of 220+/-10 eV/ion were obtained with propellant utilization of .45 at a beam current of 3 amperes. Possible improvement modifications are discussed.
File Size	8380691
Page Count	133
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19830019801
Archival Resource Key	ark:/13960/t7cs0nb3v
Language	English
Publisher Date	1981-11-01
Access Restriction	Open
Subject Keyword	Spacecraft Propulsion And Power Radio Waves Plasma Generators Plasmas Physics Electron Cyclotron Heating High Frequencies Argon Ion Beams Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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