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Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
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
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
D. C. Larson, G. L. Morgan
Nuclear Science and Engineering | Volume 75 | Number 2 | August 1980 | Pages 151-158
Technical Paper | doi.org/10.13182/NSE80-A21304
Articles are hosted by Taylor and Francis Online.
Differential cross sections for neutron-induced gamma-ray production from sodium have been measured for incident-neutron energies between 0.2 and 20.0 MeV. Gamma rays with energies 0.35 ≤ Eγ ≤ 10.6 MeV were detected with a sodium iodide spectrometer at 125 deg. The data presented are the double-differential cross section, d2σ/dΩdE, for coarse intervals in incident-neutron energy. The measured results are compared with existing data, with calculations based on multistep Hauser-Feshbach theory, and with a benchmark gamma-ray production measurement performed at the Oak Ridge Tower Shielding Facility (TSF). Average agreement between our measured results and model calculations is within 15%. The cross sections measured at the TSF are typically 30% larger than our results, except for gamma-ray energies between 1.1 and 1.5 MeV where the TSF benchmark predicts a yield 20 times greater than we observe. Results of the present measurement have been incorporated for the gamma-ray production in the Evaluated Nuclear Data File.