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Wiens et al. 1991
Wiens, R.C., Burnett, D.S., Neugebauer, M. and Pepin, R.O. (1991). Solar-wind krypton and solid/gas fractionation in the Early Solar Nebula. Geophysical Research Letters 18: doi: 10.1029/91GL00213. issn: 0094-8276.

Krypton is the best candidate for determining limits on solid/gas fractionation in the early sun because of the smoothness of the odd-mass abundance curve in its mass region, which permits relatively precise interpolations of its abundance assuming no fractionation. Here we calculate the solar-system Kr abundance 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 83Kr abundance of 4.1¿1.5 per 106 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. ¿American Geophysical Union 1991

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Abstract

Keywords
Solar Physics, Astrophysics, and Astronomy, Instruments and techniques, Planetology, Comets and Small Bodies, Composition
Journal
Geophysical Research Letters
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American Geophysical Union
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