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Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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ANS Student Conference 2025
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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.”
R. A. Aikens, Y. Jia, Z. W. Lin
Nuclear Technology | Volume 175 | Number 1 | July 2011 | Pages 146-149
Technical Paper | Special Issue on the 16th Biennial Topical Meeting of the Radiation Protection and Shielding Division / Radiation Transport and Protection | doi.org/10.13182/NT11-A12283
Articles are hosted by Taylor and Francis Online.
We use the Geant4 Monte Carlo code to study the angular dependences of different radiation particles on the lunar surface in the 1977 solar minimum galactic-cosmic-ray environment when there is no habitat. In particular, we study the anisotropy of albedo particles on the lunar surface. We find that albedo particles are in general not isotropic in the upper hemisphere, and for neutrons or photons the deviations from isotropy at lower energies have opposite signs as those at higher energies. In terms of fluence rates, deviations from the corresponding isotropic fluence rate, i.e., the rate if the particles were isotropic in a hemisphere, range from -8% for albedo neutrons up to +58% for albedo protons. Results on other albedo particles such as electrons, positrons, photons, and charged pions are also presented.