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Journal of Applied Physics : Cathode effects in cylindrical Hall thrusters

By E. M. Granstedt, Y. Raitses, and N. J. Fisch

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Book Id: WPLBN0002169333
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 17 November 2008

Title: Journal of Applied Physics : Cathode effects in cylindrical Hall thrusters  
Author: E. M. Granstedt, Y. Raitses, and N. J. Fisch
Volume: Issue : November 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection, Journal of Applied Physics Collection
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Publisher: American Institute of Physics

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Granstedt, Y. Raitses, And N. J. Fisc, E. M. (n.d.). Journal of Applied Physics : Cathode effects in cylindrical Hall thrusters. Retrieved from http://nationalpubliclibrary.com/


Description
Description: Stable operation of a cylindrical Hall thruster has been achieved using a hot wire cathode, which functions as a controllable electron emission source. It is shown that as the electron emission from the cathode increases with wire heating, the discharge current increases, the plasma plume angle reduces, and the ion energy distribution function shifts toward higher energies. The observed effect of cathode electron emission on thruster parameters extends and clarifies performance improvements previously obtained for the overrun discharge current regime of the same type of thruster, but using a hollow cathode neutralizer. Once thruster discharge current saturates with wire heating, further filament heating does not affect other discharge parameters. The saturated values of thruster discharge parameters can be further enhanced by optimal placement of the cathode wire with respect to the magnetic field.

 

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