Plasma detachment in a propulsive magnetic nozzle via ion demagnetization Articles
Overview
published in
publication date
- May 2014
start page
- 1
end page
- 5
issue
- 3 (032001)
volume
- 23
Digital Object Identifier (DOI)
full text
International Standard Serial Number (ISSN)
- 0963-0252
Electronic International Standard Serial Number (EISSN)
- 1361-6595
abstract
- Plasma detachment in propulsive magnetic nozzles is shown to be a robust phenomenon caused by the inability of the internal electric fields to bend most of the supersonic ions along the magnetic streamtubes. As a result, the plasma momentum is effectively ejected to produce thrust, and only a marginal fraction of the beam mass flows back. Detachment takes place even if quasineutrality holds everywhere and electrons are fully magnetized, and is intimately linked to the formation of local electric currents. The divergence angle of the 95%-mass flow tube is used as a quantitative detachment performance figure.
Classification
subjects
- Physics
keywords
- electric propulsion; magnetic nozzles; plasma detachment; magnetohydrodynamics