Investigation of discharge channel wall material influence on lifetime of hall effect thruster with high specific impulseV. V. Abashkin, M. B. Belikov, O. A. Gorshkov, A. S. Lovtsov and I. N. KhrapachEUCASS Proceedings Series – Advances in AeroSpace Sciences, 2 (2011) 617-628DOI: https://doi.org/10.1051/eucass/201102617