Abstract
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.
| Original language | English |
|---|---|
| Article number | 131505 |
| Journal | Applied Physics Letters |
| Volume | 99 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - 26 Sept 2011 |
Bibliographical note
Funding Information:This work was supported partly by the STSAT-3 Program (Grant No. 2010K000664) and also partly by National Space Laboratory (NSL) (Grant No. 2009-0091569) through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology.
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