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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 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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A wave of new U.S.-U.K. deals ahead of Trump’s state visit
President Trump will arrive in the United Kingdom this week for a state visit that promises to include the usual pomp and ceremony alongside the signing of a landmark new agreement on U.S.-U.K. nuclear collaboration.
Evan T. Williams, Charles D. Coryell
Nuclear Technology | Volume 2 | Number 3 | June 1966 | Pages 256-258
Technical Paper and Note | doi.org/10.13182/NT66-A27598
Articles are hosted by Taylor and Francis Online.
Two experiments have shown that 87Br is the major contributor to the 55-sec delayed-neutron activity in 235U thermal-neutron fission products. An upper limit of 0.5% has been set on the possible contribution to the total 55-sec delayed-neutron activity by unknown precursors with half-life of the order of 55-sec or longer. The half-life of87Br has been accurately measured by observing the neutron decay in chemically pure bromine samples and was found to be 55.4 ± 0.7 sec.
