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Conference Spotlight
2025 ANS Winter Conference & Expo
November 8–12, 2025
Washington, DC|Washington Hilton
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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.
J. L. Crane, R. C. Doerner
Nuclear Science and Engineering | Volume 16 | Number 3 | July 1963 | Pages 259-262
Technical Paper | doi.org/10.13182/NSE63-A26528
Articles are hosted by Taylor and Francis Online.
Self-shielding and edge corrections were investigated for varying thicknesses of 1 cm dia. gold foils. Test foils were irradiated in the hohlraum or air chamber of the Cornell University TRIGA Mark II reactor. The self-shielding effect was determined from the activation of a series of foils of different thicknesses and the edge correction from the activities of successively smaller concentric rings punched from the parent foil. Edge effects were found in the 2.5 mil and thicker foils and were statistically significant only in the outer millimeter of the foil radius. After cutting off the outer millimeter of the foils, the activity was found to follow the ½ − E3(t∑a) law for infinite foils.
