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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.
Y. Harima
Nuclear Science and Engineering | Volume 83 | Number 2 | February 1983 | Pages 299-309
Technical Note | doi.org/10.13182/NSE83-A18222
Articles are hosted by Taylor and Francis Online.
The empirical formula of gamma-ray buildup factors by a geometric-progression (G-P) method was modified by presenting the K parameter as a function of the penetrating distance from the source. The values of the parameters are given for the modified G-P method fitted to the exposure and absorbed dose buildup factor data for air, water, concrete, and iron calculated by a moments method code. The results from the present method are in good agreement with the basic data, for the 0.015- to 15-MeV energy range and for the 0.5- to 40-mfp distance range. The five parameters used in the formula for the modified G-P method change smoothly with the source energy. Therefore, the buildup factor for any arbitrary energy can easily be estimated by the interpolation of the parameters with respect to the energy. Moreover, this formula fits the buildup factor for lead, including bremsstrahlung, calculated by the discrete ordinates code PALLAS.
