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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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Powering the future: How the DOE is fueling nuclear fuel cycle research and development
As global interest in nuclear energy surges, the United States must remain at the forefront of research and development to ensure national energy security, advance nuclear technologies, and promote international cooperation on safety and nonproliferation. A crucial step in achieving this is analyzing how funding and resources are allocated to better understand how to direct future research and development. The Department of Energy has spearheaded this effort by funding hundreds of research projects across the country through the Nuclear Energy University Program (NEUP). This initiative has empowered dozens of universities to collaborate toward a nuclear-friendly future.
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.