NDLI: Ion thruster diagnostics

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Ion thruster diagnostics

Content Provider	NASA Technical Reports Server (NTRS)
Author	Friedly, Verlin J. Peng, Xiaochang Jeff Keefer, Denni Ruyten, Wilhelmus M. Celenza, Julia A.
Organization	The National Aeronautics and Space Administration (NASA)
Copyright Year	1992
Abstract	We report the results of spectroscopic investigations of beam-plasma interactions in the plume from a 3 cm ion source operated on argon. Ion-electron, ion-neutral, and electron-neutral scattering are identified by studying the dependence of neutral and ion emission intensities on chamber pressure and mass flow rate, and by analyzing the emission lineshapes at a non-orthogonal angle to the plume axis. Through the Doppler shift, we are able to separate contributions from fast beam ions and fast charge-exchange neutrals on the one hand, and of slow neutrals and slow ions on the other. We discuss the application of this new technique to the characterization of beam plasma interactions in the downstream region of ion thruster engines, and its potential for identifying the processes which lead to grid erosion.
File Size	3364586
File Format	PDF
Alternate Webpage(s)	http://www.archive.org/details/nasa_techdoc_19960011093
Archival Resource Key	ark:/13960/t7qn70s93
Language	English
Publisher Date	1992-01-01
Publisher Institution	NASA (non Center Specific)
Access Restriction	Open
Subject Keyword	Astronomical Observatories Boeing 747 Aircraft Education Galaxies International Cooperation Interstellar Matter Solar System Space Missions Star Formation Stellar Envelopes Wavelengths Infrared Astronomy Infrared Radiation Infrared Spectra Infrared Telescopes Sofia (airborne Observatory) Stratosphere Accretion Disks Apertures Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text

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