| Аннотацiя: | As a way to analyse the plasma-wall interaction, the electron energy deposition has been calculated at different points of the ceramics delimiting the plasma discharge of a Hall effect thrusters. The calculation takes into account the potential sheath but without secondary electron emission. The energy deposed by the ions is commented. The visible surfaces by the plasma of the SPT20-M (KhAI) ceramic have been analyzed at CEMHTI (CNRS Orl?ans) by GSEM (Gaseous Scanning Electron Microscope) and by EDX (Energy Dispersive X-ray) spectrometry. A large microstructural change is observed in the channel, with regions exhibiting erosion or deposit phenomena.
Key words: plasma, Hall effect thruster, surface analysis.
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