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

A. R. Soto-Chavez, A. Bhattacharjee, C. S. Ng

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


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.

Original languageEnglish (US)
Article number010701
JournalPhysics of Plasmas
Issue number1
StatePublished - Jan 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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