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 8–12, 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
Fusion Science and Technology
Latest News
Anfield Energy to start construction of Utah uranium mine
British Columbia-based Anfield Energy has scheduled a groundbreaking on November 6 at its uranium and vanadium Velvet-Wood mine, located in southeastern Utah’s Lisbon Valley. According to Corey Dias, the company’s CEO, it will be "more than a groundbreaking—it’s a bold declaration of Anfield’s readiness to help fuel the American nuclear renaissance.”
D. Schiff, S. Ziering
Nuclear Science and Engineering | Volume 7 | Number 2 | February 1960 | Pages 172-183
Technical Paper | doi.org/10.13182/NSE60-A29087
Articles are hosted by Taylor and Francis Online.
An extension of Yvon's method to two-dimensional transport theory is given. The detailed formalism in P1 approximation is presented. Some pilot calculations on two-dimensional critical sizes performed on an IBM 704 are presented both for bare and reflected reactors. A brief outline of extending this method to both three-dimensional or multigroup problems is given in the Appendix.