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This study concerns the validation of numerical models commonly used in simulations of Hall effect and other plasma thrusters and their plumes. A comparison is made of ion beam simulations with experimental data from a simplified plasma test cell in order to better characterize an environment representative of such electric propulsion devices. The simulation utilized is the DSMC-PIC tool MPIC representing heavy species as macro-particles in a non-quasineutral method. The addition and refinement of a more realistic electric potential solver in MPIC leads to the ability to simulate the effects of electrically biased surfaces in the test cell data. In addition, an analysis of secondary electron production via heavy species interactions is carried out due to the appearance of a higher-pressure phenomenon likely related to electron physics.

Analysis of a plasma test cell including non-neutrality and complex collision mechanisms