Mathematics – Probability
Scientific paper
Feb 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icar...53..219g&link_type=abstract
(Saturn Conference, Tucson, AZ, May 11-15, 1982.) Icarus, vol. 53, Feb. 1983, p. 219-229.
Mathematics
Probability
113
Dense Plasmas, Interplanetary Dust, Planetary Evolution, Saturn Rings, Astronomical Models, Clouds, Electrostatics, Magnetohydrodynamics, Plasma Cylinders, Spokes, Saturn, Rings, Models, Formation, Spokes, Size, Charged Particles, Dust, Plasmas, Impacts, Meteors, Electrostatics, Electric Fields, Gravity Properties, Polarization, Hypotheses, Electromagnetism, Density, Temperature
Scientific paper
Evidence is mounting which implies that the generation, evolution, and motion of spokes require a dense plasma near the Saturn ring plane. It is presently suggested that spokes consist of charged, micron-sized dust particles which are elevated from the rings by radially moving, dense plasma columns due to meteor impacts on the ring. Electrostatic wall sheaths at the ring, and ring charging by electric fields sufficiently strong to overcome the gravitational force on small dust particles, arise from the dense plasma, which also increases the probability of dust particle excess electronic charge. The radial motion of the plasma column is due to an azimuthal polarization electric field due to the relative motion between the corotating plasma and the negatively charged dust particles moving at Keplerian speeds.
Goertz Christoph K.
Morfill Gregor
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