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Division Spotlight
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
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.”
Arthur L. Austin
Nuclear Science and Engineering | Volume 20 | Number 1 | September 1964 | Pages 45-52
Technical Paper | doi.org/10.13182/NSE64-A19273
Articles are hosted by Taylor and Francis Online.
If a thin, unrestrained spherical shell is rapidly heated, large inertial hoop stresses may be developed which result in free oscillation. It has been shown that the dynamic stress amplitude is dependent upon the ratio of heating time to the natural period of oscillation as well as upon the maximum temperature. Since a free shell is rarely encountered in practice, the purpose of this study is to determine the dynamic response of a set of concentric spherical shells when the inner shell only is subjected to rapid, uniform, internal heat generation. The maximum number of shells chosen for analysis is three; however, the method is general and may be applied to systems containing as many concentric shells as desired. The results are presented in parametric form for the stresses in each shell and their dependence upon the material properties. In most reactor-design problems it is desired to maintain the integrity of any system; hence, it is assumed that the inner, heated shell always remains elastic. This represents the extreme stress condition, and may cause yielding of the outer shells. For constraint of the inner shell, the dynamic stresses are obtained for elastic motion and when the outer shell is allowed to flow plastically at constant stress. The special case of instantaneous heating and the effect of composite material properties upon stress amplitudes is considered in detail to provide useful design formulae.