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.
Division Spotlight
Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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
May 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
June 2025
Nuclear Technology
Fusion Science and Technology
Latest News
NRC v. Texas: Supreme Court weighs challenge to NRC authority in spent fuel storage case
The State of Texas has not one but two ongoing federal court challenges to the Nuclear Regulatory Commission that could, if successful, turn decades of NRC regulations, precedent, and case law on its head.
J. L. Jackson, J. A. Ulseth
Nuclear Technology | Volume 5 | Number 4 | October 1968 | Pages 275-282
Technical Paper and Note | doi.org/10.13182/NT68-A28031
Articles are hosted by Taylor and Francis Online.
Studies conducted in the EBR-II at 20 kW and at full power, 45 MW, confirmed the usefulness of threshold reactions, such as 54Fe(n,p)54Mn and 58Ni(n,p)58Co, for fast-reactor dosimetry. Also, there are few neutrons (<1%) below 10−2 MeV in a fast-reactor core, and the (n,γ) reactions, such as 63Cu(n,γ)64Cu, become useful fast-flux monitors. Eighty percent of the core neutrons can cause (n,γ) reactions, while only 10% can cause (n,p) reactions. Results show that transport-theory calculations provide a good approximation to the spectrum in a fast reactor. Spectral-averaged cross sections for several EBR-II positions are presented.
