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Electrostatic ion-cyclotron waves in magnetospheric plasmas Nonlocal aspectsThe importance of the effect of the magnetic shear and the finite size of current channel on the electrostatic ion-cyclotron instability for the space plasmas is illustrated. A non-local treatment is used. When the channel width Lc, is larger than the shear length Ls, there is a large reduction in the growth rate along with a noteworthy reduction of the band of the unstable perpendicular wavelengths. For Lc less than or = Ls/10 the growth rate is not much altered from its local value, however for Lc/pi i less than or = 10 to the second power the growth rate starts falling below the local value and vanishes for Lc pi i. The non-local effects lead to enhanced coherence in the ion cyclotron waves. Previously announced in STAR as N84-14917
Document ID
19840040879
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ganguli, G.
(Science Applications, Inc. McLean, VA, United States)
Bakshi, P.
(Science Applications, Inc. McLean, VA; Boston College, Chestnut Hill, MA, United States)
Palmadesso, P.
(U.S. Navy, Naval Research Laboratory, Washington DC, United States)
Date Acquired
August 12, 2013
Publication Date
February 1, 1984
Publication Information
Publication: Journal of Geophysical Research
Volume: 89
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
84A23666
Distribution Limits
Public
Copyright
Other

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