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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.”
Bernard Rottner
Nuclear Science and Engineering | Volume 155 | Number 3 | March 2007 | Pages 463-474
Technical Paper | Mathematics and Computation, Supercomputing, Reactor Physics and Nuclear and Biological Applications | doi.org/10.13182/NSE07-A2677
Articles are hosted by Taylor and Francis Online.
The activity of a radioactive waste package is usually evaluated from gamma measurements associated with transfer functions. These functions are calculated assuming that both activity and mass distributions are homogeneous. But, generally, activity and mass distributions are not homogeneous. This paper evaluates the effect of heterogeneities on the activity measurements on families of similar waste packages. An error arises, with a systematic part, leading to an overestimation or underestimation of the overall activity in a family of similar waste packages, and a stochastic part, whose mean effect on the overall activity of the family is null.In order to evaluate the effect of heterogeneities, numerical simulation of the filling of each package has been performed. Some filling parameters are randomly varied, according to the known characteristics of the real packages, so that the mass and activity distributions are different from one package to another but are always coherent with the characteristics of the real packages.These numerical simulations produce virtual families of packages. A way to fit and demonstrate the representativeness of the virtual family is described, so that the general results computed on this virtual family are applicable for the real family.