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Some aspects of double layer formation in a plasma constrained by a magnetic mirror

Published online by Cambridge University Press:  09 March 2009

W. Lennartsson
Affiliation:
Lockheed Palo Alto Research Laboratory, Palo Alto, California 94304

Abstract

The discussion of parallel electric fields in the earth's magnetosphere has undergone a notable shift of emphasis in recent years, away from wave-generated anomalous resistivity towards the more large-scale effects of magnetic confinement of current carrying plasmas. This shift has been inspired in large part by the more extensive data on auroral particle distribution functions that have been made available, data that may often seem consistent with a dissipation-free acceleration of auroral electrons over an extended altitude range.

Efforts to interpret these data have brought new vigor to the concept that a smooth and static electric field can be self-consistently generated by suitable pitch-angle anisotropies among the high-altitude particle populations, different for electrons and ions, and that such an electric field is both necessary and sufficient to maintain the plasma in a quasi-neutral steady state. This paper reviews and criticizes certain aspects of this concept, both from a general theoretical standpoint and from the standpoint of what we know about the magnetospheric environment. It is argued that this concept has flaws and that the actual physical problem is considerably more complicated, requiring a more complex electric field, possibly including double layer structures.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1987

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References

Alfvén, H. & Fälthammar, C.-G. 1963 Cosmical Electrodynamics, Fundamental Principles Clarendon Press, Oxford.Google Scholar
Block, L. P. 1967 Space Sci. Rev. 7, 198.CrossRefGoogle Scholar
Burch, J. L., Lennartsson, W., Hanson, W. B., Heelis, R. A., Hoffman, J. H. & Hoffman, R. A. 1976 J. Geophys. Res. 81, 3886.CrossRefGoogle Scholar
Borovsky, J. E. & Joyce, G. 1983 J. Geophys. Res. 88, 3116.CrossRefGoogle Scholar
Chiu, Y. T. & Schulz, M. 1978 J. Geophys. Res. 83, 629.CrossRefGoogle Scholar
Chiu, Y. T. & Cornwall, J. M. 1980 J. Geophys. Res. 85, 543.CrossRefGoogle Scholar
Evans, D. S. 1974 J. Geophys. Res. 79, 2853.CrossRefGoogle Scholar
Fredricks, R. W., Scarf, F. L. & Russell, C. T. 1973 J. Geophys. Res. 78, 2133.CrossRefGoogle Scholar
Goertz, C. K. 1979 Rev. Geophys. and Space Phys. 17, 418.CrossRefGoogle Scholar
Gurnett, D. A. & Frank, L. A. 1977 J. Geophys. Res. 82, 1031.CrossRefGoogle Scholar
Hudson, M. K., Lysak, R. L. & Mozer, F. S. 1978 Geophys. Res. Lett. 5, 143.CrossRefGoogle Scholar
Kaufmann, R. L. & Ludlow, G. R. 1981 J. Geophys. Res. 86, 7577.CrossRefGoogle Scholar
Knight, S. 1973 Planet. Space Sci. 21, 741.CrossRefGoogle Scholar
Lemaire, J. & Scherer, M. 1974 Planet. Space Sci. 22, 1485.CrossRefGoogle Scholar
Lennartsson, W. 1976 J. Geophys. Res. 81, 5583.CrossRefGoogle Scholar
Lennartsson, W. 1977 Astrophys. Space Sci. 51, 461.CrossRefGoogle Scholar
Lennartsson, W. 1980 Planet. Space Sci. 28, 135.CrossRefGoogle Scholar
Longmire, C. L. 1963 Elementary Plasma Physics, John Wiley and Sons, Inc., New York, London.Google Scholar
Lyons, L. R., Evans, D. S. & Lundin, R. 1979 J. Geophys. Res. 84, 457.CrossRefGoogle Scholar
Lyons, L. R. 1981 J. Geophys. Res. 86, 1.CrossRefGoogle Scholar
Mozer, F. S., Hudson, N. K., Torbert, R. B., Parady, B. & Yatteau, J. 1977 Phys. Rev. Lett. 38, 292.CrossRefGoogle Scholar
Mozer, F. S., Cattell, C. A., Hudson, M. K., Lysak, R. L., Temerin, M. & Torbert, R. B. 1980 Space Sci. Rev. 27, 155.CrossRefGoogle Scholar
O'Brien, B. J. 1970 Planet Space Sci. 18, 1821.CrossRefGoogle Scholar
Papadopoulos, K. 1977 Rev. Geophys. Space Phys. 15, 113.CrossRefGoogle Scholar
Persson, H. 1963 Phys. Fluids, 6, 1756.CrossRefGoogle Scholar
Persson, H. 1966 Phys. Fluids, 9, 1090.CrossRefGoogle Scholar
Smith, R. A. 1982 Physica Scripta, 25, 413.CrossRefGoogle Scholar
Stern, D. P. 1981 J. Geophys. Res. 86, 5839.CrossRefGoogle Scholar
Swift, D. W. 1965 J. Geophys. Res. 70, 3061.CrossRefGoogle Scholar
Swift, D. W. 1979 J. Geophys. Res. 84, 6427.CrossRefGoogle Scholar
Yeh, H.-C. & Hill, T. W. 1981 J. Geophys. Res. 86, 6706.CrossRefGoogle Scholar