Van’t Klooster Kees (1), Myasnikova S. E., Parshin V. V.(2), Kasparek W.(3) (1) ESA Estec EEA, PO Box 299, 2200 AG, Noordwijk, The Netherlands (Kvtkloos@estec.esa.nl) (2> Applied Physics Institute RAS, 46 Ulyanov Str. Nizhny Novgorod 603950 Russia (parsh@appl.sci-nnov.ru) (3> Universitaet Stuttgart, Institute fuer Plasmaforschung, Germany (kasparek@ipf.uni-stuttgart.de)