NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A plasma generator utilizing the high intensity ASTROMAG magnetsThe magnet configuration for the proposed particle astrophysics magnet facility (ASTROMAG) on the space station includes a cusp magnetic field with an intensity of a few tesla. With these large magnets (or others) located in the outer ionosphere, many quite interesting and unique plasma physics experiments become possible. First there are studies utilizing the magnet alone to examine the supersonic, sub-Alfvenic interaction with the ambient medium; the scale length for the magnet perturbation is approx. 20 m. The magnetic field geometry when combined with the Earth's and their relative motion will give rise to a host of plasma phenomena: ring nulls, x-points, ion-acoustic and lower-hybrid shocks, electron heating (possible shuttle glow without a surface) launching of Alfvenwaves, etc. Second, active experiments are possible for a controlled study of fundamental plasma phenomena. A controlled variable species plasma can be made by using an RF ion source; use of two soft iron rings placed about the line cusp would give an adequate resonance zone (ECH or ICH) and a confining volume suitable for gas efficiency. The emanating plasma can be used to study free expansion of plasma along and across field lines (polar wind), plasma flows around the space platform, turbulent mixing in the wake region, long wavelength spectrum of convecting modes, plasma-dust interactions, etc.
Document ID
19870010652
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sullivan, James D.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Post, R. S.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Lane, B. G.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Tarrh, J. M.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Date Acquired
September 5, 2013
Publication Date
October 1, 1986
Publication Information
Publication: JPL, Space Technology Plasma Issues in 2001
Subject Category
Plasma Physics
Accession Number
87N20085
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
No Preview Available