Electric propulsion systems provide a higher delta-V for the same mass of propellant when compared to chemical propulsion systems due to their higher Isp levels. Many electric propulsion systems utilize cathodes as electron source. Hollow cathodes generate electron current through thermionic emission mechanism. In this study conventional hollow cathode designs are investigated numerically and experimentally. Considering the problems that are encountered with the conventional designs, a new hollow cathode design is developed, which is called coaxial hollow cathode. Operational parameters of the coaxial cathode are investigated experimentally.
Thermal analysis and testing of different designs of lanthanum hexaboride hollow cathodes
2017-06-01
1019225 byte
Conference paper
Electronic Resource
English
Low Current Cerium Hexaboride and Lanthanum Hexaboride Hollow Cathodes
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