Particle transport in planetary magnetospheres

Details Particle transport in planetary magnetospheres Particle transport in planetary magnetospheres

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.207...49b&link_type=abstract

In ESA Plasma Astrophys. p 49-56 (SEE N85-22270 12-90)

Astronomy and Astrophysics

Astrophysics

Earth Magnetosphere, Energetic Particles, Geomagnetism, Jupiter Atmosphere, Particle Motion, Planetary Magnetic Fields, Adiabatic Demagnetization Cooling, Orbital Mechanics, Plasma Decay

Scientific paper

Particle energization in Earth's and Jupiter's magnetospheres is discussed. Understanding of the large scale magnetic and electric fields in which charged particles move is reviewed. Orbit theory in the adiabatic approximation is sketched. General conditions for adiabatic breakdown at each of three levels of periodicity are presented. High energy losses and lower energy sources argue for the existence of magnetospheric accelerations. Nonadiabatic acceleration processes are mentioned. Slow diffusive energization by particle interactions with electromagnetic fluctuations is outlined. This mechanism seems adequate at Earth but, operating alone, is unconvincing for Jupiter. Adding spatial diffusion in the radially distended Jovian magnetodisk may resolve the difficulty.

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