Iodine-129 in Terrestrial Ores
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 amoun.t 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 3.3×10-15 and 2.2×10-15.
B. Srinivasan et al., "Iodine-129 in Terrestrial Ores," Science, vol. 173, pp. 327-328, American Association for the Advancement of Science, Jul 1971.
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© 1971 American Association for the Advancement of Science (AAAS), All rights reserved.