Simulations on the influence of the spatial distribution of source electrons on the plasma in a cusped-field thrusterTim Brandt, Thomas Trottenberg, Rodion Groll, Frank Jansen, Franz Georg Hey, Ulrich Johann, Holger Kersten and Claus BraxmaierEur. Phys. J. D, 69 6 (2015) 145DOI: https://doi.org/10.1140/epjd/e2015-50571-4