Journal articles
The quasi-electrostatic mode of chorus waves and electron nonlinear acceleration
Abstract : Selected Time History of Events and Macroscale Interactions During Substorms observations
at medium latitudes of highly oblique and high-amplitude chorus waves are presented and analyzed. The
presence of such very intense waves is expected to have important consequences on electron energization
in the magnetosphere. An analytical model is therefore developed to evaluate the efficiency of the trapping
and acceleration of energetic electrons via Landau resonance with such nearly electrostatic chorus waves.
Test-particle simulations are then performed to illustrate the conclusions derived from the analytical model,
using parameter values consistent with observations. It is shown that the energy gain can be much larger
than the initial particle energy for 10 keV electrons, and it is further demonstrated that this energy gain is
weakly dependent on the density variation along field lines.
https://hal-insu.archives-ouvertes.fr/insu-01171206
Contributor : Nathalie Pothier <>
Submitted on : Friday, July 3, 2015 - 10:25:12 AM
Last modification on : Wednesday, July 8, 2020 - 3:16:02 PM
Document(s) archivé(s) le : Tuesday, April 25, 2017 - 10:20:17 PM
Contributor : Nathalie Pothier <>
Submitted on : Friday, July 3, 2015 - 10:25:12 AM
Last modification on : Wednesday, July 8, 2020 - 3:16:02 PM
Document(s) archivé(s) le : Tuesday, April 25, 2017 - 10:20:17 PM
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