TY - RPRT TI - Hall Current Plasma Source Having a Center-Mounted or a Surface-Mounted Cathode AU - Martinez, Rafael A. AU - Williams, John D. AU - Moritz, Jr., Joel A. AU - Farnell, Casey C. PY - 2018 UR - https://ntrs.nasa.gov/citations/20180002676 ID - 20180002676 ER -