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Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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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.
Shameem Hasan, Tushar K. Ghosh
Nuclear Technology | Volume 173 | Number 3 | March 2011 | Pages 310-317
Technical Paper | Materials for Nuclear Fuels | doi.org/10.13182/NT11-A11664
Articles are hosted by Taylor and Francis Online.
Uranium oxide nanoparticles can be used as a catalyst for a number of chemical reactions, including gas-phase destruction of organic chemicals. These particles can also be used in high-temperature catalytic applications such as the decomposition of water. In this paper we present a method for preparation of uranium oxide nanoparticles at room temperature using a surfactant templating-crystal growth technique. The size and shape of the particles were controlled by selecting appropriate surfactant micelles. Hexagonal-shaped particles were obtained when PEG-400 was used as the surfactant, whereas particles were rodlike shaped when Pluronic-123 was employed. Particles were characterized using transmission electron microscopy, Fourier transform infrared spectroscopy (FTIR), and ultraviolet-spectrometric analysis. They were found to be 500 to 1000 nm in length for hexagonal particles and 100 to 500 nm in length and 20 to 40 nm in width for rodlike particles. The FTIR spectra taken in diffuse reflectance infrared Fourier transform mode showed an infrared band at 910 cm-1 corresponding to asymmetric U=O stretching vibration of uranyl species. When the sample was heated at 600°C, four bands -- at 353, 412 to 475, 745, and 805 cm-1 -- were observed in the Raman spectrum. The bands in the range of 412 to 475 cm-1 and at 745 cm-1 could be attributed to U3O8 and UO2+2 (uranyl) species that are present in the sample.
