Excess carbon-14 abundances in uranium ores: possible evidence for emission from uranium-series isotopes.

D. Barker, A.J. Timothy Jull, D. J. Donahue

Research output: Contribution to journalArticle

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Abstract

Significant levels of 14C have been detected in U-bearing minerals using the tandem accelerator MS. The amount of 14C detected in a given mineral is proportional to the concentration of uranium in that mineral. The average value of 14C atoms/U atom is (2.2 + or - 0.5) X 10-15 (2sigma ). These data are consistent with the assumption of direct 14C emission from one or more nuclei in the 238U decay chain with a branching ratio of 1.0-2.0 X 10-9, relative to alpha decay. The uncertainty is caused by the possible production of 14C from 11B(alpha ,p)14C. (Authors' abstract)-C.N.

Original languageEnglish (US)
Pages (from-to)737-740
Number of pages4
JournalGeophysical Research Letters
Volume12
Issue number10
StatePublished - 1985

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carbon 14
uranium
carbon isotope
isotopes
minerals
isotope
mineral
alpha decay
atoms
accelerators
nuclei
decay
ore

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

Excess carbon-14 abundances in uranium ores : possible evidence for emission from uranium-series isotopes. / Barker, D.; Jull, A.J. Timothy; Donahue, D. J.

In: Geophysical Research Letters, Vol. 12, No. 10, 1985, p. 737-740.

Research output: Contribution to journalArticle

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