Iodine-129: Its Occurrenice in Nature and Its Utility as a Tracer

  title={Iodine-129: Its Occurrenice in Nature and Its Utility as a Tracer},
  author={R. R. Edwards},
  pages={851 - 853}
Natural production rates of the 16 million-year iodine-129 from spontaneous fission and from cosmic-ray reactions are estimated to contribute a steady-state concentration of more than 10-14 gram of I129 per gram of I129 to the hydrosphere, the atmosphere, and the biosphere. These concentrations are expected to be detectable by neutron-activation analysis in natural materials that concentrate iodine. Substantial additional contributions have been made by fission-produced I129 in fallout, serving… Expand

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          This work is supported in part by the U.S. Atomic Energy Commission