Performance characteristics of low power cylindrical Hall thrusters are investigated in terms of the length of the discharge channel. Thrust, efficiency, discharge current, and propellant utilization are evaluated for different channel lengths of 19, 22, and 25 mm. It is found that the propellant utilization and ion energy distribution function are strongly associated with the channel length. Increase of thrust and efficiency are also found with increasing channel lengths. These characteristics of the thruster are interpreted with possible generation of multi-charged ions due to increased residing time within the extended space inside the channel.
Performance characteristics according to the channel length and magnetic fields of cylindrical Hall thrusters
Jongsub Lee, Mihui Seo, Jongho Seon, Hae June Lee, Wonho Choe; Performance characteristics according to the channel length and magnetic fields of cylindrical Hall thrusters. Appl. Phys. Lett. 26 September 2011; 99 (13): 131505. https://doi.org/10.1063/1.3643435
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