Electron Interactions in ULF Waves

Electron Interactions with Ultra-Low-Frequency Waves

Objective: To examine, by modeling and by experimentation, the ability of ULF waves to energize electrons to elevated kinetic energy.

Significance: High-energy electrons arrive at the ionosphere from processes that take place in the magnetosphere. Coherent or stochastic acceleration mechanisms are candidates for the responsible process. Shear-driven waves may provide the coupling between macroscopic (i.e., fluid) and microscopic (i.e., kinetic) space-plasma dynamics whereby electrons can obtain directed energy along the geomagnetic field lines.

Long Range Goal: To explain observed electron energy values that exceed 106 eV.

Collaborators: Mattias Tornquist, Dimitris Vassiliadis, Mark Koepke