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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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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
K. Cheuk Chan, Harvey J. Amster
Nuclear Science and Engineering | Volume 61 | Number 3 | November 1976 | Pages 434-437
Technical Note | doi.org/10.13182/NSE76-A26931
Articles are hosted by Taylor and Francis Online.
Exact elementary functions for the value and first two lethargy derivatives of the collided neutron flux at source lethargy have been derived previously for a monoenergetic plane source in hydrogen, and the results have been used both to test calculational methods and to synthesize an elementary function for the entire spatially dependent slowing down distribution. In this Note, the exact elementary functions at source lethargy are generalized to allow: (a) any number and thicknesses of homogeneous slabs with faces parallel to the source plane, (b) each slab to be composed of any mixture of isotopes with arbitrary energy-dependent elastic scattering and absorption cross sections, and (c) any number of equally spaced cosine-weighted source planes.