Development of ion thruster IT-500 Anatoly S. Koroteev, Alexander S. Lovtsov, Vyacheslav A. Muravlev, Mikhail Y. Selivanov and Andrey A. Shagayda Eur. Phys. J. D, 71 5 (2017) 120 Published online: 23 May 2017 DOI: 10.1140/epjd/e2017-70644-6