ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
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!
Latest Magazine Issues
Oct 2025
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
November 2025
Nuclear Technology
October 2025
Fusion Science and Technology
Latest News
The current status of heat pipe R&D
Idaho National Laboratory under the Department of Energy–sponsored Microreactor Program recently conducted a comprehensive phenomena identification and ranking table (PIRT) exercise aimed at advancing heat pipe technology for microreactor applications.
William Bradley Lewis
Nuclear Technology | Volume 12 | Number 3 | November 1971 | Pages 276-280
Technical Paper | Reactor | doi.org/10.13182/NT71-A31007
Articles are hosted by Taylor and Francis Online.
A model is fitted to experimental data by means of a normalizing factor, λ(x), over a range of material compositions, x0 < x < x1. The fitting involves certain modifications of data points. The total discrepancy of the modifications is expressed as δ(x). To an error no greater than δ(x), a model agrees with experiment. Fitting was made to two-group diffusion theory, but the method has general applicability.
