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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
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
DOE extends Centrus’s HALEU production contract by one year
Centrus Energy has announced that it has secured a contract extension from the Department of Energy to continue—for one year—its ongoing high-assay low-enriched uranium (HALEU) production at the American Centrifuge Plant in Piketon, Ohio, at an annual rate of 900 kilograms of HALEU UF6. According to Centrus, the extension is valued at about $110 million through June 30, 2026.
O. D. Simpson, F. B. Simpson, J. A. Harvey, G. G. Slaughter, R. W. Benjamin, C. E. Ahlfeld
Nuclear Science and Engineering | Volume 55 | Number 3 | November 1974 | Pages 273-279
Technical Paper | doi.org/10.13182/NSE74-A23454
Articles are hosted by Taylor and Francis Online.
Neutron transmission measurements have been made on two high-purity samples of 243Am having inverse thicknesses of 1288.2 and 279.3 b/atom, respectively. Data were collected from 0.5 to 1000 eV using the Oak Ridge Electron Linear Accelerator. High resolution data were taken using 10- and 30-nsec bursts of 140-MeV electrons, 10-nsec channel widths, and a flight path of 18.576 m. An average value of Ty of 39 ± 1 meV was determined from shape analysis of 24 resonances below 18 eV. Single-level Breit-Wigner resonance parameters were obtained from area analysis up to 250 eV. The average level spacing between resonances was found to be 0.68 ± 0.06 eV. An s-wave neutron strength function of (0.96 ± 0.10) × 10≈4 was determined from the resonance parameters, The resonance-absorption integral for neutrons with energies above 0.625 eV was determined to be 1810 ± 70 b from the resonance parameters.
