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2018 
Observations in kinetic scale field line resonances, or eigenmodes of the geomagnetic field, reveal highly fieldaligned plateaued electron distributions. By combining observations from the Van Allen Probes and Cluster spacecraft with a hybrid kinetic gyrofluid simulation we show how these distributions arise from the nonlocal selfconsistent interaction of electrons with the wavefield. This interaction is manifested as electron trapping in the standing wave potential. The process operates along most of the field line and qualitatively accounts for electron observations near the equatorial plane and at higher latitudes. In conjunction with the highly fieldaligned plateaus, loss cone features are also evident, which result from the action of the upwarddirected wave parallel electric field on the untrapped electron populations. Damiano, P.A.; Chaston, C.C.; Hull, A.J.; Johnson, J.R.; Published by: Geophysical Research Letters Published on: 06/2018 YEAR: 2018 DOI: 10.1029/2018GL077748 Alfven waves; field line resonances; kinetic effects; numerical modeling; particle trapping; Radiation belts; Van Allen Probes 
2014 
Fast transport of resonant electrons in phase space due to nonlinear trapping by whistler waves We present an analytical, simplified formulation accounting for the fast transport of relativistic electrons in phase space due to waveparticle resonant interactions in the inhomogeneous magnetic field of Earth\textquoterights radiation belts. We show that the usual description of the evolution of the particle velocity distribution based on the FokkerPlanck equation can be modified to incorporate nonlinear processes of waveparticle interaction, including particle trapping. Such a modification consists in one additional operator describing fast particle jumps in phase space. The proposed, general approach is used to describe the acceleration of relativistic electrons by oblique whistler waves in the radiation belts. We demonstrate that for a wave power distribution with a hard enough power law tail inline image such that η < 5/2, the efficiency of nonlinear acceleration could be more effective than the conventional quasilinear acceleration for 100 keV electrons. Artemyev, A.; Vasiliev, A.; Mourenas, D.; Agapitov, O.; Krasnoselskikh, V.; Boscher, D.; Rolland, G.; Published by: Geophysical Research Letters Published on: 08/2014 YEAR: 2014 DOI: 10.1002/grl.v41.1610.1002/2014GL061380 particle trapping; Radiation belts; Waveparticle interaction 
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