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Correlation between fission tracks and fission type xenon in meteoritic Whitlockite

Wasserburg, G. J. and Huneke, J. C. and Burnett, D. S. (1969) Correlation between fission tracks and fission type xenon in meteoritic Whitlockite. Journal of Geophysical Research, 74 (17). pp. 4221-4232. ISSN 0148-0227. doi:10.1029/JB074i017p04221.

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Whitlockite from the St. Severin chondrite, previously shown to contain excess fission tracks, is here shown to have a large concentration of excess neutron-rich xenon isotopes. The concentration of excess heavy Xe in the whitlockite is about twenty-five times that calculated from the track density. An isotopic spectrum is deduced that is identical to the spectrum calculated previously for excess heavy xenon in the Pasamonte achondrite. These results uniquely associate this xenon spectrum with in situ fission in meteorites. Chemical arguments support the correlation of this with Pu^(244). Identification of the fissioning nucleus as Pu^(244) gives Pu^(244)/U^(238) ≈ 1/30. Neither ‘sudden’ nor ‘uniform’ nucleosynthetic models give consistent solutions for Pu^(244)/U^(238) and U^(235)/U^(238).

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Wasserburg, G. J.0000-0002-7957-8029
Burnett, D. S.0000-0001-9521-8675
Additional Information:Copyright 1969 by the American Geophysical Union. (Received April 23, 1969.) We thank Mr. J. Brown for his competent and meticulous work in obtaining the whitlockite separate and in sample preparation. Frequent discussions with William A. Fowler have been both stimulating and thought provoking. We thank O. Eugster and David N. Schramm for useful comments on the manuscript. This work was principally supported by grants from the National Science Foundation (GP-9433 and GP-9114). This paper is to be included in a collection of reprints in memory of the late Craig M. Merrihue. Contribution 1630 of the California Institute of Technology.
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Caltech Division of Geological Sciences1630
Issue or Number:17
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Official Citation:Wasserburg, G. J., J. C. Huneke, and D. S. Burnett (1969), Correlation between fission tracks and fission type xenon in meteoritic Whitlockite, J. Geophys. Res., 74(17), 4221–4232, doi:10.1029/JB074i017p04221.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51445
Deposited By: George Porter
Deposited On:07 Nov 2014 21:18
Last Modified:10 Nov 2021 19:11

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