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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.
D. E. Wood
Nuclear Science and Engineering | Volume 21 | Number 4 | April 1965 | Pages 515-522
Technical Paper | doi.org/10.13182/NSE65-A18796
Articles are hosted by Taylor and Francis Online.
The angular distribution of thermal neutrons was measured at the surfaces of cadmium bars in the graphite core of the Physical Constants Test Reactor (PCTR) at Hanford. The distribution was obtained by activating dysprosium detectors placed at the bottom of small holes in the cadmium. Theoretical calculations of the distributions were made with the optical-path method and with two versions of the SN method: HAPO Program S and the Los Alamos DSN code. All methods agreed to within the 3% standard deviation of the measurements.
