Abstract
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 language | English |
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Article number | 113504 |
Journal | Applied Physics Letters |
Volume | 100 |
Issue number | 11 |
DOIs | |
Publication status | Published - 12 Mar 2012 |