Technical Report Huang, Wensheng and Shastry, Rohit and Soulas, George C. and Kamhawi, Hani Glenn Research Center NASA/TM-2013-216606, IEPC-2013-057, E-18802, GRC-E-DAA-TN11333 WBS 272725.04.02.02.02.03 FAR FIELDS; PLUMES; HALL THRUSTERS; MAGNETIC SHIELDING; PLASMA DIAGNOSTICS; SOLAR ELECTRIC PROPULSION; THRUST MEASUREMENT; ELECTROSTATIC PROBES; EROSION; LOW EARTH ORBITS