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Collisional electrostatic ion cyclotron waves as a possible source of energetic heavy ions in the magnetosphereA new mechanism is proposed for the source of energetic heavy ions (NO/+/, O2/+/, and O/+/) found in the magnetosphere. Simulations using a multispecies particle simulation code for resistive current-driven electrostatic ion cyclotron waves show transverse and parallel bulk heating of bottomside ionospheric heavy ion populations. The dominant mechanism for the transverse bulk heating is resonant ion heating by wave-particle ion trapping. Using a linear kinetic dispersion relation for a magnetized, collisional, homogenous, and multiion plasma, it is found that collisional electrostatic ion cyclotron waves near the NO(+), O2(+), and O(+) gyrofrequencies are unstable to field-aligned currents of 50 microA/sq m for a typical bottomside ionosphere.
Document ID
19900043483
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Providakes, Jason
(Mitre Corp. Bedford, MA, United States)
Seyler, Charles E.
(Cornell University Ithaca, NY, United States)
Date Acquired
August 14, 2013
Publication Date
April 1, 1990
Publication Information
Publication: Journal of Geophysical Research
Volume: 95
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
90A30538
Funding Number(s)
CONTRACT_GRANT: NSF ATM-89-00357
CONTRACT_GRANT: NAGW-1581
CONTRACT_GRANT: NAS8-36687
CONTRACT_GRANT: NSF ATM-88-14345
Distribution Limits
Public
Copyright
Other

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