Computer Science
Scientific paper
Aug 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.304..710s&link_type=abstract
Nature (ISSN 0028-0836), vol. 304, Aug. 25, 1983, p. 710-712.
Computer Science
15
Atmospheric Composition, Io, Potassium, Satellite Atmospheres, Sodium, Space Plasmas, Sulfur Dioxides, Sputtering, Toroidal Plasmas, Voyager 1 Spacecraft, Jupiter, Satellites, Io, Escape, Sodium, Potassium, Photochemistry, Atmosphere, Sulfur Dioxide, Vapor Pressure, Temperature, Plasma, Torus, Sputtering, Ejection, Ions, Particles, Data, Flux
Scientific paper
A two-stage process is presented to identify Io as the source of Na and K ions in the Io plasma torus. The Voyager I IRIS experiment recorded an SO2 abundance of 0.2 cm atm in the Io subsolar region, and further calculations determined that the S(+) and O(+) would have sufficient energy to penetrate the Io atmosphere and produce sputtering of surface atoms at a rate of 800 million/sq cm per sec. If K, Na, and S are present on the surface in cosmic proportions, then an evenly applied sputter distribution would produce the same abundances of sputtered Na and K as observed in the Na and K clouds around Io. Sputtered into the atmosphere, the ions undergo thermal Jean's escape and attain velocities of at least 2.6 km/sec. The sputtering ions are a factor of two greater on the Jupiter side than on the solar side, in agreement with asymmetries measured by the Voyager.
Haff Peter K.
Summers Michael E.
Yung Yuk L.
No associations
LandOfFree
A two-stage mechanism for escape of NA and K from Io does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A two-stage mechanism for escape of NA and K from Io, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A two-stage mechanism for escape of NA and K from Io will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1472030