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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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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.
M. M. Meier, D. A. Clark, C. A. Goulding, J. B. McClelland, G. L. Morgan, C. E. Moss, W. B. Amian
Nuclear Science and Engineering | Volume 102 | Number 3 | July 1989 | Pages 310-321
Technical Paper | doi.org/10.13182/NSE89-A27480
Articles are hosted by Taylor and Francis Online.
Differential (p,xn) cross sections, d2σ/dΩ dEn, from thin targets and absolute neutron yields from stopping-length targets at angles of 7.5, 30, 60, and 150 deg for the 113-MeV proton bombardment of elemental beryllium, carbon, aluminum, iron, and depleted uranium are measured. Additional cross-section measurements are reported for oxygen, tungsten, and lead. Time-of-flight techniques are used to identify and discriminate against backgrounds and to determine the neutron energy spectrum. Comparisons of the experimental data with intranuclear-cascade evaporation model calculations with the HETC code show discrepancies as high as a factor of 7 in the differential cross sections. These discrepancies make it possible to identify some of the good agreement seen in the stopping-length yield comparison as fortuitous cancellation of incorrect production estimates in different energy regimes.