Optimized atom injection in a Hall effect thruster

Garrigues, L.; Hagelaar, G. J. M.; Boniface, C.; Boeuf, J. P.
November 2004
Applied Physics Letters;11/29/2004, Vol. 85 Issue 22, p5460
Academic Journal
An improvement of the neutral gas injection in order to increase the Hall thruster lifetime capabilities is demonstrated using a two-dimensional model. An additional atom injection through the channel ceramics in a region located between the ionization and the acceleration zones leads to an efficient ionization of the neutral flux, with a flattening of the plasma density and potential profiles in the radial direction. Thanks to this modified injection of the atom flow, a focusing electric field is produced, reducing the ion flux impacting on ceramic walls.


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