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.”
T. Teichmann
Nuclear Science and Engineering | Volume 7 | Number 4 | April 1960 | Pages 292-294
Technical Paper | doi.org/10.13182/NSE60-A25719
Articles are hosted by Taylor and Francis Online.
It is shown how systematic application of Laplace transform methods enables calculation of the neutron collision density in a nonabsorbing medium not only for large values of the lethargy but also for small lethargy values corresponding to small numbers of collisions. As a result, it is not necessary to solve the differential equations for the collision density between collisions.
