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Division Spotlight
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.
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.
Sylvian Kahane, Yair Ben-Dov (Birenbaum), Raymond Moreh
Nuclear Technology | Volume 209 | Number 1 | January 2023 | Pages 115-126
Technical Note | doi.org/10.1080/00295450.2022.2102847
Articles are hosted by Taylor and Francis Online.
Monoenergetic gamma beams (Δ ~ 10 eV) based on thermal neutron capture, in a nuclear reactor, using the V(n,γ) and Fe(n,γ) reactions were utilized for generating fast neutron sources from lead and thallium, respectively, via the 207Pb(γ,n) and 205Tl(γ,n) reactions. It so happens that one of the incident gamma lines of the V source, Eγ = 7163 keV, photoexcites by chance a resonance level in 207Pb, which emits neutrons at an energy of 423 keV. In a similar manner the incident gamma line at Eγ = 7646 keV of the Fe(n,γ) source photoexcites by chance a resonance level in the 205Tl isotope, which emits neutrons at an energy of 99 keV. The cross sections for the neutron emission process were measured and found to be σ(γ,n) = 35 ± 6 mb and 107 ± 17 mb, respectively, with intensities of the order of 104 n/s.
