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Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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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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Latest News
Oklo signs MOU to partner with Korea Hydro & Nuclear Power
Oklo cofounder and CEO Jacob DeWitte and KHNP CEO Joo-ho Whang following the virtual signing of an MOU. (Source: Oklo)
Oklo announced last week that it hopes to expand development and global deployment of its advanced nuclear technology through a new partnership with Korea Hydro & Nuclear Power.
The memorandum of understanding includes plans for the companies to advance standard design development and global deployment of Oklo’s planned Aurora Powerhouse, a microreactor that would generate 15 MW and be scalable to 50 MWe. Oklo said each unit can operate for 10 years or longer before refueling.
Oklo and KHNP plan to cooperate on early-stage project development, including manufacturability assessments and planning of major equipment, supply chain development for balance-of-plant systems, and constructability assessments and planning.
D. N. Bridges, J. D. Clement
Nuclear Science and Engineering | Volume 47 | Number 4 | April 1972 | Pages 421-434
Technical Paper | doi.org/10.13182/NSE72-A22434
Articles are hosted by Taylor and Francis Online.
This investigation involved a theoretical and experimental study of space-dependent reactor transfer functions with temperature feedback. The reactor transfer function under investigation was the neutron flux response to an input perturbation or source. An existing theoretical model, known as the complex source method, was extended to include temperature feedback effects and the resultant equations were programmed for a model of the Georgia Tech Research Reactor (GTRR). Spatial transfer function measurements were made in the GTRR using an in-core pile oscillator employing a pseudo-random binary sequence. Several detector locations were investigated for both zero-power and at-power (900 kW) conditions over a frequency range from 4 × 10−4 to 8.5 Hz. Data were taken and stored on magnetic tape using two PDP-8 computers and a magnetic tape unit. The theoretical calculations and the experimental results agreed quite closely. Temperature feedback effects for the GTRR were observed to occur at frequencies of 2 × 10−2 Hz and lower, and to become quite pronounced below 1 × 10−3 Hz. Spatial effects were observed to be significant only for frequencies above 1 Hz. The agreement of the calculations with the experimental results served to validate the theoretical model.