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Conference 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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August 2025
Latest News
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.
Hideki Takano, Kunio Kaneko
Nuclear Science and Engineering | Volume 77 | Number 2 | February 1981 | Pages 250-256
Technical Note | doi.org/10.13182/NSE81-A21358
Articles are hosted by Taylor and Francis Online.
Self-shielding factors for inelastic scattering cross sections of iron are calculated from the evaluated nuclear data flies ENDF/B-IV and JENDL-2. The effect of self-shielding by inelastic scattering on the neutron spectra is studied for fast reactor assemblies ZPR-3-54 and MZB, the fast critical assembly of the Japanese fast reactor program. The effect is very pronounced, especially in the steel reflector, where the spectrum is shifted to higher energy. The radial distribution of fission reaction rates calculated by considering that the self-shielding effect becomes smaller for 235U and 239Pu, but larger for 238U in the blanket and reflector regions.
