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- W2897097832 abstract "A discharge channel with a chamfered wall not only has application in the design of modern Hall thrusters, but also exists where the channel wall is eroded, and so is a common status for these units. In this paper, the laws and mechanisms that govern the effect of the chamfered wall on the performance of a Hall thruster are investigated. By applying both experimental measurement and particle-in-cell simulation, it is determined that there is a moderate chamfer angle that can further improve the optimal performance obtained with a straight channel. This is because the chamfering of the wall near the channel exit can enhance ion acceleration and effectively reduce ion recombination on the wall, which is favorable to the promotion of the thrust and efficiency. However, the chamfer angle should not be too large; otherwise, both the density of the propellant gas and the distribution of the plasma potential in the channel are influenced, which is undesirable for efficient propellant utilization and beam concentration. Therefore, it is suggested that the chamfer shape of the channel wall is an important factor that must be carefully considered in the design of Hall thrusters." @default.
- W2897097832 created "2018-10-26" @default.
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- W2897097832 date "2018-10-01" @default.
- W2897097832 modified "2023-09-27" @default.
- W2897097832 title "Experimental and numerical investigation of a Hall thruster with a chamfered channel wall" @default.
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- W2897097832 doi "https://doi.org/10.1088/1674-1056/27/10/105209" @default.
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