2020
DOI: 10.1063/5.0020074
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Measurements of channel erosion of Hall thrusters by laser-induced fluorescence

Abstract: The ion velocities within the discharge channel of the 600 W magnetically shielded and unshielded Hall thrusters are measured by the laser-induced fluorescence technique to quantitatively evaluate the erosion of the channel walls. Visual inspection of the magnetically shielded Hall thruster has qualitatively indicated that the discharge channel has been successfully shielded from the bombarding of the plasma, while the erosion occurs in the unshielded counterpart. In addition, the ion velocities along the thru… Show more

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Cited by 6 publications
(1 citation statement)
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“…Then, the change in wall profile was determined by calculating the average difference between the values before and after the experiment. Unshielded Hall thrusters, such as the SPT-100, PPS1350, and H6US, have a minimum prophase erosion rate of 10 μm h −1 [33], while those of magnetically shielded thrusters are 2-3 orders of magnitude lower; the H6MS and MSHT-600 have maximum erosion rates of 0.1 and 0.08 μm h −1 , respectively [34]. The measurement accuracy of the CMM is of the sub-micron order.…”
Section: Experimental Equipmentmentioning
confidence: 98%
“…Then, the change in wall profile was determined by calculating the average difference between the values before and after the experiment. Unshielded Hall thrusters, such as the SPT-100, PPS1350, and H6US, have a minimum prophase erosion rate of 10 μm h −1 [33], while those of magnetically shielded thrusters are 2-3 orders of magnitude lower; the H6MS and MSHT-600 have maximum erosion rates of 0.1 and 0.08 μm h −1 , respectively [34]. The measurement accuracy of the CMM is of the sub-micron order.…”
Section: Experimental Equipmentmentioning
confidence: 98%