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Title: Chorus wave amplification: A free electron laser in the Earth's magnetosphere

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.3676157· OSTI ID:22043538
;  [1];  [2]
  1. Space Science Center, University of New Hampshire, Durham, New Hampshire 03824 (United States)
  2. Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska 99775 (United States)

A new theoretical model for whistler-mode chorus amplification in the Earth's magnetosphere is presented. We derive, based on the free-electron laser mechanism in a high-gain amplifier, a new closed set of self-consistent relativistic equations that couple the Hamiltonian equations for particles with Maxwell's equations. We demonstrate that these equations predict, through a cubic equation, whistler amplification levels in good agreement with those observed in the Earth's magnetosphere.

OSTI ID:
22043538
Journal Information:
Physics of Plasmas, Vol. 19, Issue 1; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
Country of Publication:
United States
Language:
English