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Division Spotlight
Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
DOE extends Centrus’s HALEU production contract by one year
Centrus Energy has announced that it has secured a contract extension from the Department of Energy to continue—for one year—its ongoing high-assay low-enriched uranium (HALEU) production at the American Centrifuge Plant in Piketon, Ohio, at an annual rate of 900 kilograms of HALEU UF6. According to Centrus, the extension is valued at about $110 million through June 30, 2026.
H. M. Eiland, L. J. Esch, F. Feiner, J. L. Mewherter
Nuclear Science and Engineering | Volume 44 | Number 2 | May 1971 | Pages 180-189
Technical Paper | doi.org/10.13182/NSE71-A19666
Articles are hosted by Taylor and Francis Online.
The resonance integrals for capture and fission and their ratios, a, have been measured for 233U, 235U, 239Pu, and 241Pu. Small samples of high isotopic enrichment were irradiated in a water channel of a swimming pool reactor. The number of captures was determined by mass spectrometry and the number of fissions was determined by 137Cs analysis. A combination of cadmium and rhodium neutron filters was used to provide effective cutoff energies in the 2- to 4-eV range. The measured values of a above 3.0 eV are 0.148 ± 0.006, 0.615 ± 0.019, 0.723 ± 0.044, and 0.285 ± 0.015 for 233U, 235U, 239Pu, and 241Pu, respectively. The corresponding values calculated from ENDF/B cross sections are 0.162, 0.608, 0.650, and 0.212.
