On the injection and scattering of protons in Jupiter's magnetosphere

Details On the injection and scattering of protons in Jupiter's magnetosphere On the injection and scattering of protons in Jupiter's magnetosphere

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.8981b&link_type=abstract

Journal of Geophysical Research, vol. 86, Oct. 1, 1981, p. 8981-8990.

Physics

15

Carrier Injection, Jupiter Atmosphere, Planetary Magnetospheres, Proton Scattering, Atmospheric Models, Magnetohydrodynamic Waves, Particle Acceleration, Particle Interactions, Plasma Layers, Jupiter, Magnetosphere, Injection, Scattering, Protons, Acceleration, Mathematical Models, Magnetic Fields, Waves, Flux, Voyager 1, Density, Observations, Plasma Sheets, Corotation, Alfven Waves, Ions, Intensity, Magnetohydrodynamics, Energy, Particles, Distribution, Data, Radius, Turbulence, Ionosphere

Scientific paper

The interaction, scattering, and acceleration of Jovian ions through magnetohydrodynamic waves are investigated. A model of the Alfven speed in the plasma sheet for both inbound and outbound legs of the Voyager 1 encounter is presented, and underlying assumptions are discussed. Theoretical ingredients of a rotationally driven Jovian substorm are defined, and the convective growth rate of the fast wave for both a warm and a cold beam is derived. The mean-free path for scattering based on in situ measurements of magnetic fluctuations in the plasma sheet is estimated, and the results indicate that scattering of super-Alfvenic ions occurs on a regular basis throughout the plasma sheet, and the observed level of magnetic fluctuations is sufficiently high to stop ionospheric protons.

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