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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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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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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BWXT will scout potential TRISO fuel production sites in Wyoming
BWX Technologies Inc. announced today that its Advanced Technologies subsidiary has signed a cooperation agreement with the state of Wyoming to evaluate locations and requirements for siting a potential new TRISO nuclear fuel fabrication facility in the state.
Amos Notea, Yitzhak Segal
Nuclear Technology | Volume 63 | Number 1 | October 1983 | Pages 121-128
Technical Paper | Radioisotopes and Isotope | doi.org/10.13182/NT83-A33308
Articles are hosted by Taylor and Francis Online.
The characteristic functions of dynamic gauges, based on nuclear or atomic radiation, were developed. These gauges are applied to the examination of material whose properties may vary continuously with time. The approach presented takes into consideration contributions to the uncertainty and blurring from various effects, such as radiation scattering, gauge geometry, and the system’s time constant. The analysis is based on the concept of the line spread function obtained from the derivation of the response to a step change in the inspected property. The response and relative resolving functions were demonstrated for a rectangular change with a gamma-through transmission gauge. The procedure provides a systematic method of obtaining the optimal values for the design parameters of the radio gauge, such as radiation energy, source emission rate, detection efficiency, detector-sample distance, and measurement time. The time constant, for example, reveals a pronounced minimal value for large relative velocity. Due to the radiation scattering in the examined material, there is an advantage to large detector-material distance. The design values may differ considerably more for the dynamic gauge than for a static gauge, i.e., a gauge applied to samples whose properties do not vary during the measurement period.