Physics – Plasma Physics
Scientific paper
Sep 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jgr...10618895s&link_type=abstract
Journal of Geophysical Research, Volume 106, Issue A9, p. 18895-18906
Physics
Plasma Physics
6
Magnetospheric Physics: Energetic Particles, Trapped, Magnetospheric Physics: Planetary Magnetospheres, Space Plasma Physics: Charged Particle Motion And Acceleration, Space Plasma Physics: Nonlinear Phenomena
Scientific paper
A systematic study of energetic ion trajectories in Jupiter's plasma sheet region predicts a significant role for both regular and stochastic types of motion and reveals several aspects of the ion dynamics that aid in the interpretation of Galileo observations. The motion is generally confined to the vicinity of the current sheet in a way that is proportional to the variable current sheet thickness as seen in the particle and field data. The radial extent of the trajectories increases with rigidity and initial radial distance from the planet, explaining the corresponding lack of high-rigidity ions and decreasing radial gradients at lower rigidity. Ion intensity increases associated with changes in current sheet thickness suggest an acceleration region at ~25 to 30 RJ. Energy dispersion in ion events at larger radial distances can be explained by such a source combined with elastic ion scattering.
Cohen Christina Mae S.
Khurana Krishan K.
Selesnick Richard S.
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