Plasma Species Measurements in the Plume of an Iodine Fueled Hall Thruster

Autor:	Mike Robin, James Szabo
Rok vydání:	2014
Předmět:	Propellant Materials science Mechanical Engineering Aerospace Engineering chemistry.chemical_element Plasma humanities Cathode law.invention Plume Ion Fuel Technology Xenon chemistry Space and Planetary Science law Electron temperature Atomic physics Electrostatic analyzer
Zdroj:	Journal of Propulsion and Power. 30:1357-1367
ISSN:	1533-3876 0748-4658
Popis:	The plasma plume from a low-power Hall-effect thruster fueled by iodine vapor was characterized with several wetted plasma probes. The plasma source included a laboratory propellant feed system and a laboratory model Hall thruster powered by a breadboard power processing unit. The hollow cathode was fed with xenon. Iodine and xenon ion velocity and energy distributions were measured with an ExB probe, an electrostatic analyzer, and a combined electrostatic analyzer/ExB probe. Multiply charged species were detected in the plume when the thruster was operated with iodine and xenon. Diatomic iodine ions were also detected. The dimer fraction was found to vary with thruster operating conditions and probe location in degrees from the center of the beam. The dimer fraction was also found to decrease as discharge current and voltage increased. With the thruster operating at a discharge potential of 250 V, the fraction of the high-energy ion flux comprised of dimers exceeded 10% over a broad region of the plume a...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7a21f7adfbd96b689e515994aa52f370 https://doi.org/10.2514/1.b35075 Zobrazit plný text záznamu