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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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
High temperature fission chambers engineered for AMR/SMR safety and performance
As the global energy landscape shifts towards safer, smaller, and more flexible nuclear power, Small Modular Reactors (SMRs) and Gen. IV* technologies are at the forefront of innovation. These advanced designs pose new challenges in size, efficiency, and operating environment that traditional instrumentation and control solutions aren’t always designed to handle.
D. J. Dudziak, L. B. Freeman
Nuclear Science and Engineering | Volume 11 | Number 3 | November 1961 | Pages 324-327
Technical Paper | doi.org/10.13182/NSE61-A26011
Articles are hosted by Taylor and Francis Online.
An analytical and experimental investigation of irradiated Ra:Be neutron sources has been carried out at the Bettis Laboratory and at the Materials Test Reactor (MTR) in Idaho. The significant isotopes in the Ra226, Ac227, and Th228 chains are described analytically and the neutron source strengths and γ dose rates are calculated. Comparison with experiment shows a reasonable predictability in most cases.
