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Showing 1 to 3 of 3 for “"heaterless hollow cathode"”.
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Operation Mode Transitions in a Heaterless Hollow Cathode
Hollow cathodes are used to neutralize ions in electric propulsion systems, and are a lifetime-limiting component due to the presence of high-energy ions generated in the plasma plume. These ions impact the cathode's keeper electrode destroying it over a period of tens of thousands of hours. The …
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Development and Modelling of a Low Current LaB₆ Heaterless Hollow Cathode
… analysis, and testing of a low current, LaB6 heaterless hollow cathode for space propulsion applications. A heaterless design using LaB6 is chosen to reduce complexity and increase electrical power efficiency and robustness. Argon propellant is used due to its more favorable breakdown voltage …
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Characterization of a Low Current LaB6 Heaterless Hollow Cathode with Krypton Propellant
A first-generation LaB6 heaterless hollow cathode with a flat-plate anode is experimentally investigated. The cathode is characterized using krypton as propellant at varying flow rates, discharge currents and cathode-anode distances. Voltage probes, used to make direct voltage measurements in the …