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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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ANS joins others in seeking to discuss SNF/HLW impasse
The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”
J. W. Behrens, G. W. Carlson
Nuclear Science and Engineering | Volume 63 | Number 3 | July 1977 | Pages 250-267
Technical Paper | doi.org/10.13182/NSE77-2
Articles are hosted by Taylor and Francis Online.
We have measured the fission cross-section ratios 234U:235U, 236U:235U, and 238U:235U as a function of neutron energy from 0.1 to 30 MeV using ionization fission chambers and the time-of-flight technique at the Lawrence Livermore Laboratory 100-MeV electron linear accelerator. Our experimental procedure required accurate measurements of the isotopic composition of fissionable material within fission chambers containing a mixture of the threshold isotope (i.e., 234U, 236U, or 238U) and 235U. The measured cross-section ratios, averaged over the neutron energy interval 1.75 to 4.00 MeV, are 1.216 ± 0.012, 0.7166 ± 0.0072, and 0.4422 ± 0.0031, respectively.