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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
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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.”
Samim Anghaie, Larry L. Humphries, Nils J. Diaz
Nuclear Technology | Volume 91 | Number 3 | September 1990 | Pages 361-375
Technical Paper | Material | doi.org/10.13182/NT90-A34457
Articles are hosted by Taylor and Francis Online.
The differential gamma scattering spectroscopy technique is a novel means of nondestructive testing using Compton scattering to determine local density perturbations in a test sample. The test sample is irradiated with a narrow collimated beam of gamma rays, and the scattered radiation field is detected in a transversely placed high-purity germanium detector. The detector provides excellent energy resolution so that a detailed energy spectrum can be obtained. This spectrum is then subtracted from a reference spectrum that was collected from a well-known, unflawed sample to obtain the differential spectrum. This differential spectrum primarily contains information characterizing the flaw. Using the relationship between the scattering angle and the scattering energy that characterizes Compton scattering, the single-scattered spectrum can be used to determine the location of scattering and, consequently, the density distribution along the portion of the primary beam path that passes through the sample. An attractive feature of this technique that sets it apart from other Compton scattering techniques is the ability to detect flaws both on and off the primary beam path.