Physics
Scientific paper
Nov 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.6435l&link_type=abstract
Journal of Geophysical Research, vol. 84, Nov. 1, 1979, p. 6435-6442. Research supported by the Swiss National Science Foundati
Physics
1
Atmospheric Composition, Earth Magnetosphere, Particle Flux Density, Precipitation, Rare Gases, Solar Terrestrial Interactions, Aerology, Argon, Chemical Composition, Helium, Neon, Radiation Counters, Satellite-Borne Instruments, Skylab Program, Solar Wind
Scientific paper
Metal-foil collectors were installed on the external structure of Skylab to entrap precipitating magnetospheric particles. The foils were retrieved, and the entrapped helium, neon, and argon were isotopically analyzed in a high-resolution mass spectrometer. Solar and terrestrial helium and neon and terrestrial argon were detected. As expected, the isotopic composition of neon and argon in the high atmosphere was found to be strongly fractionated. Special techniques were used to estimate the initial particle energy of He-3. The measured He-3 flux is consistent with the assumption that precipitating solar He-3 is the major source of terrestrial He-3.
Geiss Johannes
Lind D. L.
Stettler W.
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