Helicon-type radiofrequency plasma thrusters and magnetic plasma nozzles

  title={Helicon-type radiofrequency plasma thrusters and magnetic plasma nozzles},
  author={Kazunori Takahashi},
  journal={Reviews of Modern Plasma Physics},
Development of electrodeless radiofrequency plasma thrusters, e.g., a helicon thruster, has been one the of challenging topics for future high-power and long-lived electric propulsion systems. The concept simply has a radiofrequency plasma production/heating source and a magnetic nozzle, while it seems to include many aspects of physics and engineering issues. The plasma produced inside the source is transported along the magnetic field lines and expands in the magnetic nozzle, where the plasma… 
Magnetic nozzle radiofrequency plasma thruster approaching twenty percent thruster efficiency
Two-dimensional plume characterization suggests that the lowered performance for the lower rf power transfer efficiency for the $$m=+1$$ m = + 1 mode case is due to the plasma production at the radial center, where contribution on a thrust exerted to the magnetic nozzle is weakdue to the absence of the radial magnetic field.
Demonstrating a magnetic steering of the thrust imparted by the magnetic nozzle radiofrequency plasma thruster
  • Ryoji Imai, Kazunori Takahashi
  • Materials Science
    Applied Physics Letters
  • 2021
Axial and horizontal components of the thrust imparted by a magnetic nozzle radio frequency plasma thruster are measured by attaching the thruster to a pendulum balance, where two horizontal
Spatially- and vector-resolved momentum flux lost to a wall in a magnetic nozzle rf plasma thruster
The spatially- and vector-resolved measurement of the momentum flux near the cylindrical source wall of a magnetic nozzle radiofrequency (rf) plasma thruster configuration is successfully demonstrated by using a momentum vector measurement instrument.
Deflections of dynamic momentum flux and electron diamagnetic thrust in a magnetically steered rf plasma thruster
  • Ryoji Imai, Kazunori Takahashi
  • Physics
    Journal of Physics D: Applied Physics
  • 2021
Two-dimensional characterization of the plasma plume is experimentally performed downstream of a magnetically steered radiofrequency plasma thruster, where the ion beam current, the ion saturation
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Thrust imparted by a helicon plasma thruster is experimentally measured for two different diameter source tubes. The measurements demonstrate that the thrust-over-power of the helicon thruster can be
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