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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
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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Latest News
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.
Robert C. Block, Donald R. Harris, Si Hwan Kim, Katsuhei Kobayashi
Nuclear Science and Engineering | Volume 80 | Number 2 | February 1982 | Pages 263-281
Technical Paper | doi.org/10.13182/NSE82-A21430
Articles are hosted by Taylor and Francis Online.
Neutron self-indication measurements simulating 238U capture in reactors have been carried out over the energy range from 3 eV to 3 keV using shielding samples at 77, 293, and 873 K. The data have been reduced to open and self-shielded capture yields provided on magnetic tape as benchmark data for comparison with nuclear design calculations. The important energy range below 100 eV has been analyzed in detail both to obtain improved resonance parameters for the levels at 6.67, 20.9, 36.8, 66.1, and 80.7 eV and to examine the accuracy with which cross sections are calculated from resonance formalisms. The improved resonance parameters, when used with an accurate but practical multilevel formalism, reduce by about one-half the long-standing discrepancy between calculated and measured 238U resonance capture integrals.