ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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.”
Per Hedemann Jensen
Nuclear Technology | Volume 68 | Number 1 | January 1985 | Pages 29-39
Technical Paper | Nuclear Safety | doi.org/10.13182/NT85-A33564
Articles are hosted by Taylor and Francis Online.
A computer model DEPSHIELD for the calculation of shielding factors for gamma radiation at indoor residences in multistory and single-family houses has been developed. The model is based on the exponential point kernel that links the radiation flux density at a given detector point to a point-source strength. The radiation sources considered in the model are fallout radioactivity deposited on roofs, outer walls, and ground surfaces. For any combination of source strength on roof, outer wall, and ground surface, the model calculates shielding factors for specified photon energies. The input data are the dimensions of the house, the thickness of the walls and floors, the window dimensions, and the size of the surrounding ground surface. The fallout source strength on the surfaces is allowed to have different values due to different deposition velocities to these surfaces. This feature of the model also makes it possible to determine the dose reduction effect from a decontamination of the different surfaces. The model has been used in a study of the consequences of land contamination of Danish territory after hypothetical core-melt accidents at the Barsebäck nuclear power plant in Sweden. The model has also been used to calculate shielding factors for typical houses in the other Nordic countries.