• Login
    View Item 
    •   Treasures Home
    • Academic Schools and Programs
    • School of Natural Sciences and Mathematics
    • NSM Faculty Research
    • Chen, Lunjin
    • View Item
    •   Treasures Home
    • Academic Schools and Programs
    • School of Natural Sciences and Mathematics
    • NSM Faculty Research
    • Chen, Lunjin
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Modeling Energetic Electron Nonlinear Wave-Particle Interactions with Electromagnetic Ion Cyclotron Waves

    Thumbnail
    View/Open
    Article (3.240Mb)
    Date
    2019-04-15
    Author
    Zheng, Liheng
    Chen, Lunjin
    Zhu, Hui
    Metadata
    Show full item record
    Abstract
    Abstract
    Electromagnetic ion cyclotron (EMIC) waves in duskside plasmasphere and plasmaspheric plume scatter megaelectron volt electrons into the loss cone and are considered a major loss mechanism for the outer radiation belt. Wave-particle interaction between energetic electrons and EMIC waves has been studied extensively by the quasi-linear diffusion theory. However, EMIC waves are typically strong enough to trigger nonlinear wave-particle interaction effects and transport electrons in very different ways from quasi-linear diffusion. New mathematical method is therefore in demand to study the evolution of energetic electron distribution in response to nonlinear wave-particle interaction. In this work, we present a Markov chain description of the wave-particle interaction process, in which the electron distribution is represented by a state vector and is evolved by the Markov matrix. The Markov matrix is a matrix form of the electron response Green's function and could be determined from test particle simulations. Our modeling results suggest that electron loss rate is not significantly affected by phase bunching and phase trapping, but for strong EMIC waves, electron distribution is more saturated near loss cone than quasi-linear theory prediction, and negative electron phase space density slope develops inside loss cone. ©2019. American Geophysical Union. All Rights Reserved.
    URI
    http://dx.doi.org/10.1029/2018JA026156
    https://hdl.handle.net/10735.1/7852
    Collections
    • Chen, Lunjin
    • CSS Research

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of TreasuresCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    Login

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV