Ion Acceleration in the Plasma Sheet Boundary Layers

Details Ion Acceleration in the Plasma Sheet Boundary Layers Ion Acceleration in the Plasma Sheet Boundary Layers

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsm21a0449s&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SM21A-0449

Physics

2736 Magnetosphere/Ionosphere Interactions, 2744 Magnetotail, 2748 Magnetotail Boundary Layers

Scientific paper

We present a study of ion acceleration and heating inside the plasma sheet boundary layers. Two components can generally be detected there, high energy plasma sheet ions streaming earthward and ionospheric protons and oxygen ions flowing tailward. Alfven waves with large and variable amplitude are found to control at times the perpendicular motion of these ions. Inside the PSBL, both the ion parallel and perpendicular velocities increase. The temperature of the ions is also enhanced. Using the four Cluster spacecraft, we test if centrifugal accelerations could be responsible for an exchange between perpendicular and parallel energies and if the observed low frequency waves are able to locally heat efficiently the ionospheric ions.

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