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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.
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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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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.
Yoshihiro Yamane, Kazuma Tanaka, Kojiro Nishina, Hajime Tamagawa, Seiji Shiroya
Nuclear Science and Engineering | Volume 76 | Number 2 | November 1980 | Pages 232-245
Technical Paper | doi.org/10.13182/NSE80-A19453
Articles are hosted by Taylor and Francis Online.
A method is proposed to derive three kinetic parameters of a zero-power coupled-core system, namely coupling reactivity Δ, mean neutron transit time , and neutron generation time Λ of respective cores, from the measured frequency responses. In the experimental determination of the parameters, the analytical expression of coupling kernel and its frequency dependence, which are derived from the moderator region response function, are taken advantage of. For experimental determination of the parameters as well as frequency response, experiments were carried out with a pile oscillator installed in the Kyoto University Critical Assembly, a light-water-moderated and -reflected critical assembly. The variation of kinetic parameters with the core distance, in particular, was observed with special attention. The validity of the proposed method is demonstrated by close agreement in the first two of the above three parameters between the theory and the experiment.