The Iogenic Microsignatures of ~5 MeV/nucleon Heavy Ions

Details The Iogenic Microsignatures of ~5 MeV/nucleon Heavy Ions The Iogenic Microsignatures of ~5 MeV/nucleon Heavy Ions

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusm.p22a..13c&link_type=abstract

American Geophysical Union, Spring Meeting 2002, abstract #P22A-13

Physics

2720 Energetic Particles, Trapped, 5737 Magnetospheres (2756), 6220 Jupiter

Scientific paper

The trajectories of energetic particles as they move through the inner Jovian magnetosphere is a complicated one. The particles gyrate around the magnetic field lines, bounce along the magnetic field lines (between magnetic mirrors closer to the poles) and drift azimuthally around Jupiter. In the vicinity of Io these particles can be absorbed by the moon, creating a depletion, or microsignature, in the measured particle intensities. The azimuthal shape and size of the microsignature depends on the particles bounce and drift timescales relative to the size of Io. In this talk we will examine particle intensities and pitch angle distributions of ~5 MeV/nucleon oxygen ions as measured by the Heavy Ion Counter during Galileo's many Io encounters. These measurements provide a direct measure of the strength of Io absorption as a loss of energetic particles. This work was supported by NASA at Caltech (under JPL contract)

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