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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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New coolants, new fuels: A new generation of university reactors
Here’s an easy way to make aging U.S. power reactors look relatively youthful: Compare them (average age: 43) with the nation’s university research reactors. The 25 operating today have been licensed for an average of about 58 years.
J. B. Czirr, M. L. Stelts
Nuclear Science and Engineering | Volume 52 | Number 3 | November 1973 | Pages 299-309
Technical Paper | doi.org/10.13182/NSE73-A19477
Articles are hosted by Taylor and Francis Online.
As part of a continuing program to accurately measure neutron capture cross sections, we have obtained data for 165Ho and 197Au in the 167-eV to 0.6-MeV energy range. All capture reactions are measured relative to the fission rate of 235U for neutron energies above 800 eV and to the 10B(n, αo + α1) reaction below 13 keV. In addition, current best estimates of σF(235U) and σn,α(10B) are used to convert these ratios to up-to-date capture cross sections. The 3.9-eV “black resonance” of 165Ho is used to normalize all cross sections.