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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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ITA to work with IAEA on advance geologic repository knowledge
The International Tunnelling and Underground Space Association (ITA), a nongovernmental organization made up of 81 member states working to advance the safe, beneficial use of subsurface spaces, is working with the International Atomic Energy Agency to support the advancement of geologic disposal facilities for high-level radioactive waste.
R. C. Greenwood, K. D. Watts
Nuclear Science and Engineering | Volume 126 | Number 3 | July 1997 | Pages 324-332
Technical Paper | doi.org/10.13182/NSE97-A24484
Articles are hosted by Taylor and Francis Online.
Measurement of the energy spectra of delayed neutrons for the isotope-separated, fission product precursors 87Br, 88Br, 89Br, 90Br, 137I, 138I, 139I, and 136Te are reported for an energy range up to 1213 keV and with lower cutoff energies of 11.1, 11.1, 29.9, 48.9, 14.2, 23.3, 29.9, and 48.9 keV, respectively. These data were obtained at the TRISTAN Isotope Separation On-Line facility using H2 and CH4 gas-filled proportional counters. The data for each of the bromine, iodine, and tellurium isotopes show good qualitative agreement with the published 3He ionization chamber data at energies above ∼200 keV. In addition, they provide definitive spectral information down to their respective cutoff energies.
