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Approximate analytical formulation of radial diffusion and whistler-induced losses from a pre-existing flux peak in the plasmasphere

Modeling the spatio-temporal evolution of relativistic electron fluxes trapped in the Earth\textquoterights radiation belts in the presence of radial diffusion coupled with wave-induced losses should address one important question: how deep can relativistic electrons penetrate into the inner magnetosphere? However, a full modelling requires extensive numerical simulations solving the comprehensive quasi-linear equations describing pitch-angle and radial diffusion of the electron distribution, making it rather difficult to pe ...

Mourenas, D.; Artemyev, A.; Agapitov, O.V.;

YEAR: 2015     DOI: 10.1002/2015JA021623

inner belt; Keywords: radial diffusion; Radiation belts; Van Allen Probes


Scattering rates of inner belt protons by EMIC waves: A comparison between test particle and diffusion simulations

Inner belt energetic protons are a hindrance to development of space technologies. The emission of electromagnetic ion cyclotron (EMIC) waves from spaceborne transmitters has been proposed as a way to solve this problem. The interaction between particles and narrowband emissions has been typically studied using nonlinear test particle simulations. We show that this formulation results in a random walk of the inner belt protons in velocity space. In this paper we compute bounce-averaged pitch angle diffusion rates from test p ...

de Soria-Santacruz, M.; Orlova, K.; Martinez-Sanchez, M.; . Y. Shprits, Y;

YEAR: 2013     DOI: 10.1002/grl.50925

EMIC; inner belt; wave-particle interactions