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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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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.
Roman Bednarz
Nuclear Science and Engineering | Volume 10 | Number 3 | July 1961 | Pages 219-222
Technical Paper | doi.org/10.13182/NSE61-A25963
Articles are hosted by Taylor and Francis Online.
The slowing-down equation for the infinite homogeneous moderator is solved exactly. The solution is obtained in analytical form. The calculated collision density and the escape probability are compared with the approximate Wigner formulas in the case of resonance no wider than one collision interval.
