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Magnetic detachment and plume control in escaping magnetized plasma

Published online by Cambridge University Press:  01 June 2009

P. F. SCHMIT  and
N. J. FISCH
P. F. SCHMIT
Affiliation:
Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08540, USA ([email protected])
N. J. FISCH
Affiliation:
Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08540, USA ([email protected])
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Abstract

The model of two-fluid, axisymmetric, ambipolar magnetized plasma detachment from thruster guide fields is extended to include plasmas with non-zero injection angular velocity profiles. Certain plasma injection angular velocity profiles are shown to narrow the plasma plume, thereby increasing exhaust efficiency. As an example, we consider a magnetic guide field arising from a simple current ring and demonstrate plasma injection schemes that more than double the fraction of useful exhaust aperture area, more than halve the exhaust plume angle, and enhance magnetized plasma detachment.

Type
Papers
Information
Journal of Plasma Physics , Volume 75 , Issue 3 , June 2009 , pp. 359 - 371
Copyright
Copyright © Cambridge University Press 2008

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