Full text loading...
Principle of operation of the cylindrical Hall thruster.
Plume narrowing with the overrun discharge current (OC): Ion flux angular distribution measured for the 2.6 and CHTs at the discharge voltage of and the xenon gas flow rate of . The ion flux was measured with a guarding sleeve probe and with zero bias RPA. The centerline is at 0°.
Ion energy distribution function (IEDF) measured at different angular placements of the RPA. The CHT was operated with and without the OC at the discharge voltage of and the xenon gas flow rate of .
Thruster anode efficiency of the CHT thruster at different discharge voltages and anode flow rates (, xenon). For the OC operation, the open and filled box markers correspond to the anode efficiency and input power values obtained with and without taking into account the additional power used to overrun the discharge current, respectively.
RPA measurements for the CHT (, , xenon): the total ion current (a) and the half-plume angle (b) (estimated for 90% of the total ion current) with and without the discharge OC. The RPA voltage is given with respect to ground. Note that only ions with energies higher than can reach the RPA collector. The reproducibility of plume measurements was better than 5%.
Article metrics loading...