Axial force imparted by a conical radiofrequency magneto-plasma thruster

C. Charles, K. Takahashi, R. W. Boswell

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29 Citations (Scopus)


Direct thrust measurements of a low pressure (∼0.133 Pa) conical radiofrequency (rf at 13.56 MHz) argon plasma source show a total axial force of about 5 mN for an effective rf power of 650 W and a maximum magnetic field of 0.018 T, of which a measured value of 2.5 mN is imparted by the magnetic nozzle. A simplified model of thrust including contributions from the electron pressure and from the magnetic field pressure is developed. The magnetic nozzle is modelled as a physical nozzle of increasing cross-sectional area.

Original languageEnglish
Article number113504
JournalApplied Physics Letters
Issue number11
Publication statusPublished - 2012 Mar 12


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