Affiliation:
1. Space Sciences Laboratory University of California, Berkeley Berkeley CA USA
Abstract
AbstractThe transport of energetic electrons immersed in Alfvénic turbulence in Earth's outer radiation belt is explored. It is shown how electrons subject to the action of an empirically derived 3‐D spectrum of Alfvénic field fluctuations experience rapid transport across L‐shells, pitch‐angle and through momentum space. Timescales for radial transport are less than a drift period while scattering at large pitch‐angle occurs at a similar rate. Transport through momentum space occurs at a rate comparable to that in whistler mode chorus and is particularly rapid below 100 keV. Bounce‐averaged transport coefficients for these processes are consistent with quasi‐linear estimates for drift‐bounce resonances, albeit with enhanced values. A super‐diffusive to sub‐diffusive transition with increasing energy is identified.
Funder
National Science Foundation
National Aeronautics and Space Administration
Publisher
American Geophysical Union (AGU)
Subject
General Earth and Planetary Sciences,Geophysics