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Observations and Fokker-Planck Simulations of the L-Shell, Energy, and Pitch Angle Structure of Earth's Electron Radiation Belts During Quiet Times
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SYSNO ASEP 0503901 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Observations and Fokker-Planck Simulations of the L-Shell, Energy, and Pitch Angle Structure of Earth's Electron Radiation Belts During Quiet Times Author(s) Ripoll, J.-F. (FR)
Loridan, V. (FR)
Denton, M. H. (US)
Cunningham, G. (US)
Reeves, G. (US)
Santolík, Ondřej (UFA-U) RID, ORCID
Fennell, J. (US)
Turner, D. L. (US)
Drozdov, A.Y. (US)
Cervantes Villa, J.S. (DE)
Shprits, Y. Y. (US)
Thaller, S. A. (US)
Kurth, W. S. (US)
Kletzing, C. A. (US)
Henderson, M. G. (US)
Ukhorskiy, A. Y. (US)Number of authors 16 Source Title Journal of Geophysical Research-Space Physics. - : Wiley - ISSN 2169-9380
Roč. 124, č. 2 (2019), s. 1125-1142Number of pages 18 s. Publication form Print - P Language eng - English Country US - United States Keywords radiation belts ; wave-particle interactions ; electron lifetime ; pitch angle diffusion coefficient ; hiss waves Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) Method of publishing Limited access Institutional support UFA-U - RVO:68378289 UT WOS 000462015700020 EID SCOPUS 85061240672 DOI https://doi.org/10.1029/2018JA026111 Annotation The evolution of the radiation belts in L-shell (L), energy (E), and equatorial pitch angle (alpha(0)) is analyzed during the calm 11-day interval (4-15 March) following the 1 March 2013 storm. Magnetic Electron and Ion Spectrometer (MagEIS) observations from Van Allen Probes are interpreted alongside 1D and 3D Fokker-Planck simulations combined with consistent event-driven scattering modeling from whistler mode hiss waves. Three (L, E, alpha(0)) regions persist through 11 days of hiss wave scattering, the pitch angle-dependent inner belt core (L similar to <2.2 and E < 700 keV), pitch angle homogeneous outer belt low-energy core (L > similar to 5 and E similar to < 100 keV), and a distinct pocket of electrons (L similar to [4.5, 5.5] and E similar to [0.7, 2] MeV). The pitch angle homogeneous outer belt is explained by the diffusion coefficients that are roughly constant for alpha(0) similar to <60 degrees, E > 100 keV, 3.5 < L < L-pp similar to 6. Thus, observed unidirectional flux decays can be used to estimate local pitch angle diffusion rates in that region. Top-hat distributions are computed and observed at L similar to 3-3.5 and E = 100-300 keV. Workplace Institute of Atmospheric Physics Contact Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Year of Publishing 2020 Electronic address https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018JA026111
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