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Kinetic friction attributed to enhanced radiation by cyclotron maser instabilityAlong the auroral field lines, a fraction of the energetic electrons injected from the magnetotail is reflected by the earth's convergent geomagnetic field. The reflected loss-cone electrons are unstable with respect to the cyclotron maser instability, resulting in the auroral kilometric radiation. This paper investigates the kinetic friction force exerted on the energetic electrons by the enhanced radiation field. It is found that the enhanced radiation results in a deceleration of reflected electrons, thereby providing an effective resistivity. In addition, the rate of decrease (increase) of effective perpendicular (parallel) kinetic temperatures is also evaluated. The analysis is carried out over various physical parameters such as the degree of loss cone, average particle energy, and the ratio of plasma frequency to cyclotron frequency.
Document ID
19920033618
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Yoon, Peter H.
(Maryland Univ. College Park, MD, United States)
Wu, C. S.
(Maryland, University College Park, United States)
Date Acquired
August 15, 2013
Publication Date
November 15, 1991
Publication Information
Publication: Physical Review A
Volume: 44
ISSN: 1050-2947
Subject Category
Geophysics
Accession Number
92A16242
Funding Number(s)
CONTRACT_GRANT: NAGW-1661
Distribution Limits
Public
Copyright
Other

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