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Wave-particle interaction at the plasmasphere-ring current interfaceDuring the plasmasphere filling process following geomagnetic storms, an outward density decrease of the cold plasma at L = 3-4 is typically observed. When this structure overlaps with the sharp inner edge of the ring current, wave activity is detected at linearly stable phase velocities. The excitation of these waves around the lower hybrid frequency and their effects on the heating of thermal ions is analyzed. It is found that lower hybrid drift waves are most effective at heating lower mass ions, e.g. plasmaspheric H(+), versus He(+), which may be heated more effectively by electromagnetic ion cyclotron waves driven unstable by the ring current loss cone.
Document ID
19930042363
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Roth, Ilan
(California Univ. Berkeley, United States)
Hudson, Mary K.
(Dartmouth College Hanover, NH, United States)
Date Acquired
August 16, 2013
Publication Date
December 1, 1992
Publication Information
Publication: IEEE Transactions on Plasma Science
Volume: 20
Issue: 6
ISSN: 0093-3813
Subject Category
Geophysics
Accession Number
93A26360
Funding Number(s)
CONTRACT_GRANT: NSF ATM-89-18774
CONTRACT_GRANT: NAG5-1098
CONTRACT_GRANT: NAGW-1626
Distribution Limits
Public
Copyright
Other

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