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Charged Particle Cross-Field Transport due to Geometric Jumps of Adiabatic Invariant
S R Kamaletdinov1, A V Artemyev1, A I Neishtadt2
1University of California, Department of Earth, Planetary, and Space Sciences, Los Angeles, California, USA.
None:
We examine energetic electron transport in Earth's outer radiation belt, presenting a mechanism for rapid (nondiffusive) radial transport. This process relies on electron crossings of an asymmetric separatrix in slow-fast Hamiltonian system, occurring in Earth's dayside magnetosphere due to interactions with the interplanetary magnetic field. The resulting asymmetry quickly destroys adiabatic invariant through geometric jumps, driving exponential phase-space mixing and enhancing radial transport of ≳1 MeV electrons during geomagnetically quiet conditions.
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