Abstract

Effect of negatively charged dust on resistive instability corresponding to the electrostatic wave is investigated in a Hall thruster plasma when this purely azimuthal wave is tilted and strong axial component of wave vector is developed. Analytical calculations are done to obtain the relevant dispersion equation, which is solved numerically to investigate the growth rate of the instability. The magnitude of the growth rate in the plasma having dust particles is found to be much smaller than the case of pure plasma. However, the instability grows faster for the increasing dust density and the higher charge on the dust particles. The higher magnetic field is also found to support the instability.

Highlights

  • In recent years, electric propulsion is being used successfully in space missions and the Hall thruster is one of the most promising devices [1,2,3] for small satellites because of its high thrust density and efficiency

  • Effect of negatively charged dust on resistive instability corresponding to the electrostatic wave is investigated in a Hall thruster plasma when this purely azimuthal wave is tilted and strong axial component of wave vector is developed

  • The magnitude of the growth rate in the plasma having dust particles is found to be much smaller than the case of pure plasma

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Summary

Introduction

Electric propulsion is being used successfully in space missions and the Hall thruster is one of the most promising devices [1,2,3] for small satellites because of its high thrust density and efficiency. Abstract Effect of negatively charged dust on resistive instability corresponding to the electrostatic wave is investigated in a Hall thruster plasma when this purely azimuthal wave is tilted and strong axial component of wave vector is developed. Keywords Hall thruster Á Negatively charged dust Á Tilted resistive instability Á Growth rate

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