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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.
Yuzo Fukai
Nuclear Science and Engineering | Volume 9 | Number 3 | March 1961 | Pages 370-376
Technical Paper | doi.org/10.13182/NSE61-A25890
Articles are hosted by Taylor and Francis Online.
The Dancoff correction has an important role in the calculation of the resonance escape probability of water moderated lattices. By use of the method of Dancoff and Ginsburg, it is shown how to take account of the shadowing of distant neighbors by near neighbors. Although these results are in good agreement with Monte Carlo calculations, the method is very complicated and laborious. A new approximate analytical formula for the Dancoff correction is developed which is much simpler and which gives good agreement with the Monte Carlo results.
