The absorption of trapped particles by the inner satellites of Jupiter and the radial diffusion coefficient of particle transport

Details The absorption of trapped particles by the inner satellites of Jupiter and the radial diffusion coefficient of particle transport The absorption of trapped particles by the inner satellites of Jupiter and the radial diffusion coefficient of particle transport

Mar 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81.1289m&link_type=abstract

Journal of Geophysical Research, vol. 81, Mar. 1, 1976, p. 1289-1295.

Physics

9

Jupiter Atmosphere, Magnetically Trapped Particles, Natural Satellites, Particle Diffusion, Planetary Magnetic Fields, Europa, Io, Pioneer 10 Space Probe

Scientific paper

The process of trapped particle absorption by the inner Jovian satellites is considered in detail taking into account both the particle and satellite motions in a magnetic dipole field which is displaced from the center of the planet and tilted with respect to the planetary rotation axis. An expression is derived for computing the sweeping time at a given satellite, defined as the time required for the satellite to sweep up a given fraction of the trapped particles within its sweeping region. By making use of the sweeping time and the radial diffusion equation of particle transport approximate expressions for the diffusion coefficient are derived. Measurements obtained by Pioneer 10 are then used to obtain estimates of the diffusion coefficient at the orbits of Io and Europa. We find that the diffusion coefficient is a function of energy and magnetic latitude for electrons in the energy range 0.7-14 MeV.

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