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High-energy tail distributions and resonant wave particle interactionHigh-energy tail distributions (k distributions) are used as an alternative to a bi-Lorentzian distribution to study the influence of energetic protons on the right- and left-hand cyclotron modes in a hot two-temperature plasma. Although the parameters are chosen to be in a range appropriate to solar wind or magnetospheric configurations, the results apply not only to specific space plasmas. The presence of energetic particles significantly alters the behavior of the electromagnetic ion cyclotron modes, leading to a wide range of unstable frequencies and increased growth rates. From the strongly enhanced growth rates it can be concluded that high-energy tail distributions should not show major temperature anisotropies, which is consistent with observations.
Document ID
19830037100
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Leubner, M. P.
(NASA Goddard Space Flight Center Laboratory for Extraterrestrial Physics, Greenbelt, MD, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1983
Publication Information
Publication: Journal of Geophysical Research
Volume: 88
Subject Category
Geophysics
Accession Number
83A18318
Distribution Limits
Public
Copyright
Other

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