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Solar-wind krypton and solid/gas fractionation in the Early Solar Nebula

Wiens, Roger C. and Burnett, D. S. and Neugebauer, M. and Pepin, R. O. (1991) Solar-wind krypton and solid/gas fractionation in the Early Solar Nebula. Geophysical Research Letters, 18 (2). pp. 207-210. ISSN 0094-8276. https://resolver.caltech.edu/CaltechAUTHORS:20141110-123753242

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Abstract

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 ^(83)Kr abundance of 4.1 ± 1.5 per 10^6 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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/91GL00213DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/91GL00213/abstractPublisherArticle
ORCID:
AuthorORCID
Wiens, Roger C.0000-0002-3409-7344
Additional Information:Copyright 1991 by the American Geophysical Union. (Received August 17, 1990; revised November 19, 1990; accepted November 21, 1990) Paper number 91GL00213. This research was supported in part by NASA grants NAG 9-94 to D. Burnett and NAG 9-60 to R. O. Pepin. J. Kerridge and an anonymous reviewer are thanked for their assistance, and profitable discussions with D. Stevenson are acknowledged.
Funders:
Funding AgencyGrant Number
NASANAG 9-94
NASANAG 9-60
Issue or Number:2
Record Number:CaltechAUTHORS:20141110-123753242
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20141110-123753242
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51516
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:10 Nov 2014 21:28
Last Modified:03 Oct 2019 07:33

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