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Science 23 July 1971:
Vol. 173. no. 3994, pp. 327 - 328
DOI: 10.1126/science.173.3994.327
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Articles

Iodine-129 in Terrestrial Ores

B. Srinivasan 1, E. C. Alexander Jr. 1, and O. K. Manuel 1

1 Department of Chemistry, University of Missouri, Rolla 65401

Xenon extracted from natural iodyrite (silver iodide) from Broken Hill, New South Wales, Australia, contains excess xenon-129 from the in situ decay of naturally occurring iodine-129 and excess xenon-128 from neutron capture on iodine-127. On the basis of the amount of radiogenic xenon-129, it is estimated that, prior to the nuclear age, terrestrial iodine contained an equilibrium ratio of iodine-129 to iodine-127 of between 3.3 x 10-15 and 2.2 x 10-15.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
The Xenon Record of Extinct Radioactivities in the Earth.
M. S. Boulos, M. S. Boulos, and O. K. Manuel (1971)
Science 174, 1334-1336
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