Li W., Y. Y. Shprits, R. M. Thorne, (2007), Dynamic evolution of energetic outer zone electrons due to wave-particle interactions during storms, J. Geophys. Res. [Space Physics], 112, doi:10.1029/2007JA012368

## Abstract

Relativistic electrons in the outer radiation belt are subjected to pitch angle and energy diffusion by chorus, electromagnetic ion cyclotron (EMIC), and hiss waves. Using quasi-linear diffusion coefficients for cyclotron resonance with field-aligned waves, we examine whether the resonant interactions with chorus waves produce a net acceleration or loss of relativistic electrons. We also examine the effect of pitch angle scattering by EMIC and hiss waves during the main and recovery phases of a storm. The numerical simulations show that wave-particle interactions with whistler mode chorus waves with realistic wave spectral properties result in a net acceleration of relativistic electrons, while EMIC waves, which provide very fast scattering near the edge of the loss cone, may be a dominant loss mechanism during the main phase of a storm. In addition, hiss waves are effective in scattering equatorially mirroring electrons and may be an important mechanism of transporting high pitch angle electrons toward the loss cone.## Authors (sorted by name)

Li Shprits Thorne## Journal / Conference

Journal Of Geophysical Research (Space Physics)## Acknowledgments

This research was supported by the NSF GEM grant ATM‐0603191 and ATM‐0402615 and also NASA LWS grants NNX06AB84G and NNG04GN44G.## Grants

ATM‐0402615 ATM‐0603191 NNG04GN44G NNX06AB84G## Bibtex

@article{doi:10.1029/2007JA012368,
author = {Li, W. and Shprits, Y. Y. and Thorne, R. M.},
title = {Dynamic evolution of energetic outer zone electrons due to wave-particle interactions during storms},
journal = {Journal of Geophysical Research: Space Physics},
volume = {112},
year = {2007},
number = {A10},
pages = {},
keywords = {wave-particle interactions, radiation belt, energetic electrons},
doi = {10.1029/2007JA012368},
url = {https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2007JA012368},
eprint = {https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2007JA012368},
abstract = {Relativistic electrons in the outer radiation belt are subjected to pitch angle and energy diffusion by chorus, electromagnetic ion cyclotron (EMIC), and hiss waves. Using quasi-linear diffusion coefficients for cyclotron resonance with field-aligned waves, we examine whether the resonant interactions with chorus waves produce a net acceleration or loss of relativistic electrons. We also examine the effect of pitch angle scattering by EMIC and hiss waves during the main and recovery phases of a storm. The numerical simulations show that wave-particle interactions with whistler mode chorus waves with realistic wave spectral properties result in a net acceleration of relativistic electrons, while EMIC waves, which provide very fast scattering near the edge of the loss cone, may be a dominant loss mechanism during the main phase of a storm. In addition, hiss waves are effective in scattering equatorially mirroring electrons and may be an important mechanism of transporting high pitch angle electrons toward the loss cone.}
}