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Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
J. J. KEPES, L. A. MIKOLEIT, R. G. SERENKA
Nuclear Science and Engineering | Volume 14 | Number 1 | September 1962 | Pages 11-16
Technical Paper | doi.org/10.13182/NSE62-A26194
Articles are hosted by Taylor and Francis Online.
Differential measurements of the epicadmium and total U238 radiative capture have been obtained in thin natural uranium-niobium plates and compared to several theoretical models. These fuel elements were located in Zircaloy-2 boxes, which in turn were placed in a light water moderated critical assembly at ambient temperatures. A Monte Carlo calculation with the assumption of a smooth 3.3 b contribution predicted the spatial epicadmium activation through a natural uranium fuel plate positioned in the center of the Zircaloy-2 box. It was observed that the integrated epicadmium U238 radiative capture in the end fuel plate of the Zircaloy-2 box was 1.27 times the capture in the center fuel plate. This sharp end-to-center dipping was due to a water channel located next to the fuel box. An analytic calculation based on the thin resonance theory of Stein gave a value of 1.16 for this end-to-center ratio. The experimental integrated values for ρ28, the ratio of epicadmium to thermal captures, were 0.893 ± 0.009 in the center fuel plate, 0.765 ± 0.014 in the second from the end plate, and 0.851 ± 0.011 in the end plate. The value of ρ28 obtained using a diffusion theory approximation for these plates was 4.7%, 7.5%, and 21.7% below experiment. The prediction in the end plate was improved when the Stein theory was utilized to calculate the resonance capture.
