Pitch-angle diffusion of electrons through growing and propagating along a magnetic field electromagnetic wave in Earth's radiation belts

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The diffusion of electrons via a linearly polarized, growing electromagnetic (EM) wave propagating along a uniform magnetic field is investigated. The diffusion of electrons that interact with the growing EM wave is investigated through the autocorrelation function of the parallel electron acceleration in several tens of electron gyration timescales, which is a relatively short time compared with the bounce time of electrons between two mirror points in Earth's radiation belts. Furthermore, the pitch-angle diffusion coefficient is derived for the resonant and non-resonant electrons, and the effect of the wave growth on the electron diffusion is discussed. The results can be applied to other problems related to local acceleration or the heating of electrons in space plasmas, such as in the radiation belts.
Publisher
AMER INST PHYSICS
Issue Date
2015-06
Language
English
Article Type
Article
Keywords

ION-CYCLOTRON WAVES; STOCHASTIC ACCELERATION; PARTICLE INTERACTIONS; GEOMAGNETIC STORMS; PRECIPITATION; SCATTERING; MAGNETOSPHERE; GROWTH

Citation

PHYSICS OF PLASMAS, v.22, no.6

ISSN
1070-664X
DOI
10.1063/1.4923267
URI
http://hdl.handle.net/10203/200734
Appears in Collection
PH-Journal Papers(저널논문)
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