Solar-wind krypton and solid/gas fractionation in the early solar nebula

Details Solar-wind krypton and solid/gas fractionation in the early solar nebula Solar-wind krypton and solid/gas fractionation in the early solar nebula

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18..207w&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 18, Feb. 1991, p. 207-210.

Physics

3

Gas-Solid Interfaces, Krypton, Solar Corona, Solar System Evolution, Solar Wind, Abundance, Ilmenite, Rare Gases

Scientific paper

The solar-system Kr abundance is calculated from solar-wind noble-gas ratios, determined previously by low-temperature oxidations of lunar ilmenite grains, normalized to Si by spacecraft solar-wind measurements. The estimated Kr-83 abundance of 4.1 + or - 1.5 per million Si atoms is within uncertainty of estimates assuming no fractionation, determined from CI-chondrite abundances of surrounding elements. This is significant because it is the first such constraint on solid/gas fractionation, though the large uncertainty only confines it to somewhat less than a factor of two.

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