Measurement of Absolute Xenon Density and Gas Injection Impact in Hall Thrusters

Details Measurement of Absolute Xenon Density and Gas Injection Impact in Hall Thrusters Measurement of Absolute Xenon Density and Gas Injection Impact in Hall Thrusters

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.555e..25v&link_type=abstract

Proceedings of the 4th International Spacecraft Propulsion Conference (ESA SP-555). 2-9 June, 2004, Chia Laguna (Cagliari), Sard

Computer Science

Scientific paper

This paper is focused on gas injection in Hall thrusters, from neutral gas simulation and experimental characterization to impacts on the thruster behavior. Optical methods have been employed to observe and to analyze the impact of the propellant injection on the density distribution in the channel of a SPT-100 type thruster and on its behavior while firing. The experimental data on the gas distribution obtained by density measurements are compared to codes predictions. These results allow to validate numerical assumptions such as the beamlet structure at the exit of the distributor or the atom-wall interaction. In a second step several injection modes have been tested on the thruster itself to examine the impact of the injection mode on the electric behavior and on the plume of the thruster.

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