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Conference Spotlight
2025 ANS Winter Conference & Expo
November 8–12, 2025
Washington, DC|Washington Hilton
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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.
J. Ligou, C. Mignot
Nuclear Science and Engineering | Volume 19 | Number 1 | May 1964 | Pages 58-73
Technical Paper | doi.org/10.13182/NSE64-A19789
Articles are hosted by Taylor and Francis Online.
This article is devoted to an extension of Galanin's heterogeneous theory to the tridimensional problems usually met in studies of small reactors. Clearly, this method is also applicable to bidimensional problems. Here also, it brings in several improvements compared with the parent theory, especially concerning the radial reflector, which can here be of finite dimensions. Significant numerical examples are given in the final section. The codes used—for the IBM 7090 computer—lead to times of calculation which are reasonable for small reactors. They may also be used for much bigger reactors provided that they are used to treat bidimensional problems only.
