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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.
C. B. Bigham, B. G. Chidley, R. B. Turner
Nuclear Science and Engineering | Volume 16 | Number 1 | May 1963 | Pages 68-84
Technical Paper | doi.org/10.13182/NSE63-A26478
Articles are hosted by Taylor and Francis Online.
The slowing-down spectrum in a CANDU-type reactor cell has been studied using resonance activation techniques. The measurements covered the energy range 1.46 ev to 367 ev. The effects of replacing the heavy water coolant with mixtures of light and heavy water and light water were studied. Measurements were also made in a channel without fuel clusters. The spectra observed in the normal cell were approximately 1/E throughout the cell except for depressions caused by prominent U238 resonances. With no fuel in the cell, large departures from 1/E were observed.
