The ring atmosphere of Saturn - Monte Carlo simulation of ring source models

Details The ring atmosphere of Saturn - Monte Carlo simulation of ring source models The ring atmosphere of Saturn - Monte Carlo simulation of ring source models

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.8843i&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Oct. 1, 1984, p. 8843-8849, 9035.

Astronomy and Astrophysics

Astronomy

22

Astronomical Models, Hydrogen Atoms, Particle Emission, Planetary Atmospheres, Saturn Rings, Density Distribution, Monte Carlo Method, Saturn, Atmosphere, Rings, Simulations, Monte Carlo Technique, Models, Source, Distribution, Hydrogen, Emissions, Strength, Interactions, Sputtering, Impacts, Meteoroids, Vapor, Production Rates, Geometry, Ejection, Trajectories, Magnetosphere, Plasmas, Charged Particles, Parameters, Calculations, Lyman-Alpha Radiation

Scientific paper

The spatial distributions of hydrogen atoms emitted from the rings of Saturn with a range of emission speeds are simulated by a Monte Carlo technique. It is demonstrated that ring reabsorption and charge exchange loss are more significant loss processes than photoionization at over 2.3 Saturn radii. The hydrogen emission rate, the perpendicular scale height, and the number density of the hydrogen atoms at several radial positions are given. Various parameters controlling the production and loss of neutral hydrogen atoms in the vicinity of the rings are listed. For shorter ionization lifetimes of the neutral ring atmosphere, a higher percentage of the hydrogen atoms will be lost to the magnetosphere. For high-speed emission the charge exchange rate increases by only 40 percent, whereas for low-speed emission it increases by a factor of three. For low-speed emission, the minimum charge exchange loss rate is 4.6 percent of the total hydrogen emission rate.

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