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Division Spotlight
Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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.
A. Ziya Akcasu, R. K. Osborn
Nuclear Science and Engineering | Volume 26 | Number 1 | September 1966 | Pages 13-25
Technical Paper | doi.org/10.13182/NSE66-A17183
Articles are hosted by Taylor and Francis Online.
The space- and energy-dependent theory of reactor-noise analysis has been developed using Langevin's technique starting from the transport equations. The theory includes delayed neutrons. The correlation function and the power spectral density for the detection rate, as well as for the neutron density, have been obtained. The application of the general theory to simple reactor models has been discussed and illustrated by considering the one-speed transport and one-speed diffusion approximations. The connection between Langevin's technique and the doublet theory based on the Liouville equation has been established. It has been found that both formulations yield identical results and that the postulates of Langevin's technique are justified for the study of neutron distributions.
