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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Leading the charge: INL’s role in advancing HALEU production
Idaho National Laboratory is playing a key role in helping the U.S. Department of Energy meet near-term needs by recovering HALEU from federal inventories, providing critical support to help lay the foundation for a future commercial HALEU supply chain. INL also supports coordination of broader DOE efforts, from material recovery at the Savannah River Site in South Carolina to commercial enrichment initiatives.
F. H. Fröhner
Nuclear Science and Engineering | Volume 106 | Number 3 | November 1990 | Pages 345-352
Technical Paper | doi.org/10.13182/NSE89-177
Articles are hosted by Taylor and Francis Online.
Recent measurements define the prompt fission neutron spectrum of 252Cf from 25 keV to 20 MeV with sufficient accuracy to show that the standard representation by a Maxwell spectrum with the temperature parameter TM = 1.42 MeV is not adequate. The next simplest macroscopic representation, a Watt spectrum with the two parameters Tw = 1.18 MeV and Ew = 0.36 MeV, fits the recent data surprisingly well, at least as well as the best currently available microscopic models of fission neutron emission. The resulting chi-square does not indicate any need for a more sophisticated description, nor is the fit improved by refinements such as superposition of two Watt distributions (for a representative fragment pair), or relativistic corrections.
