Abstract
A three-dimensional model of atom and ion dynamics in the accelerating channel of a stationary plasma thruster (SPT) is based on the model kinetic equations. Electron dynamics is described based on available experimental data. The expression for the electric field was obtained from the equation of electron impulse conservation law with the use of “thermalized potential” assumption. The simulation was performed for a particular SPT with a thrust vector deviation. A quantitative agreement with the experimental results was obtained on thrust and thrust vector deviation angles for two different SPT operation modes. Calculated distributions of macroparameters demonstrate azimuthally asymmetrical ionization and acceleration processes in this particular SPT.
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