Brief review on plasma propulsion with neutralizer-free systems

Electric space propulsion is an intensively developing field addressing new demands and challenges for long-term spacecraft operation. Many novel plasma propulsion concepts aim to find new acceleration principles, use alternative propellants, upscale or downscale thrusters for large thrust or for ve...

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Bibliographic Details
Published in:Plasma sources science & technology 2016-06, Vol.25 (4), p.43001-43014
Main Authors: Rafalskyi, D, Aanesland, A
Format: Article
Language:English
Subjects:
Acceleration
Beams (radiation)
Categories
Electric potential
ion extraction from plasma
neutralizer-free propulsion
Physics
Plasma acceleration
Plasma Physics
Plasma propulsion
plasma thruster
space propulsion
Spacecraft
Voltage
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Summary:Electric space propulsion is an intensively developing field addressing new demands and challenges for long-term spacecraft operation. Many novel plasma propulsion concepts aim to find new acceleration principles, use alternative propellants, upscale or downscale thrusters for large thrust or for very small spacecrafts etc. In this work we review the neutralizer-free concepts, where both positive and negative particles are extracted and accelerated from plasmas. We can divide these concepts into three main categories, defined by their acceleration principle: (i) neutral beam generation, (ii) plasma acceleration/expansion and (iii) bipolar beam acceleration. We describe the basic physical principles and evaluate the main advantages and drawbacks in view of general space applications. We also present here further detail on a recent concept where RF voltages are used to accelerate quasi-simultaneously positive ions and electrons from the same source.
ISSN:0963-0252
1361-6595
DOI:10.1088/0963-0252/25/4/043001