Charged-particle absorption by Io

Details Charged-particle absorption by Io Charged-particle absorption by Io

Nov 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976aero.reptq....s&link_type=abstract

Interim Report Aerospace Corp., El Segundo, CA. Space Sciences Lab.

Physics

Adiabatic Conditions, Charged Particles, Electric Fields, Electromagnetic Absorption, Jupiter (Planet), Adiabatic Equations, Cold Plasmas, Electron Energy, Particle Energy, Proton Energy, Two Dimensional Models

Scientific paper

An idealized two-dimensional model of the distorted electric field configuration, in the limit of a perfectly conducting satellite or satellite ionosphere, has been constructed. This model has been used to trace the adiabatic guiding-center trajectories of energetic protons and electrons across Jupiter's magnetic-field lines, which are taken as rectilinear. The adiabatic trajectories of very low-energy particles (cold-plasma) are thus found to avoid the satellite and escape absorption. In the limit of very high particle energies the adiabatic trajectories are undistorted, and absorption proceeds as if Io were an insulator. The particle absorbing characteristics of an electrically conducting Jovian satellite are found to depend on both the species and the energy of the incident particle, and the satellite's particle-absorbing cross section differs systematically from its geometric cross section.

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