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Studies on an experimental quartz tube hollow cathodeAn experimental study is described in which a quartz tube, hollow cathode was operated in a test fixture allowing the simultaneous measurement of internal cathode pressure, insert temperature profiles, and the emission currents from various cathode components as a function of discharge current and propellant (mercury) mass flow rate for a number of different cathode orifice diameters. Results show that the insert temperature profile is essentially independent of orifice diameter but depends strongly on internal cathode pressure and emission current. The product of internal cathode pressure and insert diameter is shown to be important in determining the emission location and the minimum keeper voltage.
Document ID
19800029133
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Siegfried, D. E.
(Colorado State Univ. Fort Collins, CO, United States)
Wilbur, P. J.
(Colorado State University Fort Collins, Colo., United States)
Date Acquired
August 10, 2013
Publication Date
October 1, 1979
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
AIAA PAPER 79-2056
Meeting Information
Meeting: International Electric Propulsion Conference
Location: Princeton, NJ
Start Date: October 30, 1979
End Date: November 1, 1979
Sponsors: Princeton University, AIAA, and DGLR,
Accession Number
80A13303
Funding Number(s)
CONTRACT_GRANT: NGR-06-002-112
Distribution Limits
Public
Copyright
Other

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