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Conference Spotlight
2025 ANS Winter Conference & Expo
November 8–12, 2025
Washington, DC|Washington Hilton
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
Japan gets new U for enrichment as global power and fuel plans grow
President Trump is in Japan today, with a visit with new Prime Minister Sanae Takaichi on the agenda. Takaichi, who took office just last week as Japan’s first female prime minister, has already spoken in favor of nuclear energy and of accelerating the restart of Japan’s long-shuttered power reactors, as Reuters and others have reported. Much of the uranium to power those reactors will be enriched at Japan’s lone enrichment facility—part of Japan Nuclear Fuel Ltd.’s Rokkasho fuel complex—which accepted its first delivery of fresh uranium hexafluoride (UF₆) in 11 years earlier this month.
K. J. Yost, S. M. Kremer
Nuclear Science and Engineering | Volume 36 | Number 2 | May 1969 | Pages 220-231
Technical Paper | doi.org/10.13182/NSE69-A19719
Articles are hosted by Taylor and Francis Online.
A simplified cascade model for the calculation of neutron-capture gamma-ray spectra is compared with experiment. In the context of the model, the simplifying assumptions involve extrapolations of measured multipole transition probabilities and equal spin-branching probabilities. Calculated and measured neutron capture gamma-ray spectra are compared for 25 elements spanning virtually the entire mass scale. Substantial agreement between calculated and measured spectra is obtained for medium and heavy nuclei. An analytical method for obtaining neutron energy-dependent capture gamma-ray production cross sections is developed. A comparison between calculated and measured fast neutron capture gamma-ray yields in 64Cu is presented.
