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
Sep 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
Fusion Science and Technology
October 2025
Latest News
A wave of new U.S.-U.K. deals ahead of Trump’s state visit
President Trump will arrive in the United Kingdom this week for a state visit that promises to include the usual pomp and ceremony alongside the signing of a landmark new agreement on U.S.-U.K. nuclear collaboration.
D. Klein
Nuclear Science and Engineering | Volume 8 | Number 5 | November 1960 | Pages 405-409
Technical Paper | doi.org/10.13182/NSE60-A25821
Articles are hosted by Taylor and Francis Online.
Measurements of Pu239 and Pu241 fission rates relative to U235 have been made in 1.3% enriched uranium metal fueled lattices. Results were obtained in lattices having 0.387-in. diameter rods and water-to-uranium ratios of 2.35:1 or 1:1. The measurements are compared with a calculational model and the agreement is considered good.