Correctly modelling the transverse electron mobility is a principle difficulty in computational modelling of Hall thrusters. A 2D hybrid PIC-MCC model is used to test two different electron mobility models. The two models, one based on Bohm diffusion and the other on electron-wall collisions, are applied to two different Hall thrusters (SPT-100 and UM/AFRL P5). Preliminary results are presented and compared with experimental results. (C) 2004 Elsevier B.V. All rights reserved.
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