Physics
Scientific paper
Feb 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984lpsc...14..711j&link_type=abstract
(American Geophysical Union and NASA, Lunar and Planetary Science Conference, 14th, Houston, TX, Mar. 14-18, 1983) Journal of Ge
Physics
3
Erosion, Ice, Io, Ion Irradiation, Satellite Surfaces, Sulfur Dioxides, Energy Spectra, Mass Spectra, Sputtering, Time Dependence, Jupiter, Satellites, Io, Ice, Bombardment, Erosion, Sulfur Dioxide, Spectra, Sputtering, Temperature, Sulfur, Oxygen, Ions, Irradiation, Time Dependency, Chemistry, Formation, Ejecta, Plasma Torus, Erosion, Density, Ejection, Bombardment, Frost, Experiments, Analysis
Scientific paper
New measurements on the effect of slow ion bombardment of SO2 ice using Ar(+) in the 15-45 keV range are presented. Total yields for loss of SO2 are given along with the energy spectra of the ejected molecules and molecular fragments and information on the chemical changes induced by the ion bombardment. These data are used to estimate that the direct sputter ejection rate of sulfur into the Jovian plasma is of the order of 10 billion atoms/sq cm/s, that the erosion rate of fresh SO2 deposits due to sputtering is of the order of 0.001 cm/yr, and that a significant and possibly observable column density of SO3 can be produced in an SO2 front only for penetrating ion bombardment. Chemical activity occurs even in rather low-temperature SO2 ice bombardment by ions in the nuclear stopping region, and this activity is likely to increase with increasing temperature.
Barton L. A.
Boring J. W.
Brown Warren L.
Garrett J. W.
Johnson Robert E.
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