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
Nuclear Nonproliferation Policy
The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
Apr 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
May 2025
Nuclear Technology
April 2025
Fusion Science and Technology
Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
Z. W. Bell, J. K. Dickens, D. C. Larson, J. H. Todd
Nuclear Science and Engineering | Volume 84 | Number 1 | May 1983 | Pages 12-32
Technical Paper | doi.org/10.13182/NSE83-A17454
Articles are hosted by Taylor and Francis Online.
Interactions of neutrons with the iron isotope 57Fe have been studied by measuring gamma-ray production cross sections for incident neutron energies between 0.16 and 21 MeV. Neutrons produced by the Oak Ridge Electron Linear Accelerator impinged on a metallic iron sample enriched to 93% in the isotope 57Fe. The resulting gamma radiation was detected using a 100-cm3 Ge(Li) detector placed at 125 deg with respect to the neutron beam line. A complete description of the experiment is given. Absolute gamma-ray production cross sections were measured for gamma rays corresponding to the 57Fe(n,n′ γ)57Fe, 57Fe(n,γ)58Fe, 57Fe(n,α)54Cr, 57Fe(n,2n)56Fe, and 57Fe(n,p)57Mn reactions. The cross section for the 57Fe(n,2n)56Fe reaction exceeds 1 b for En ∼ 15 MeV, and the cross section for the 57Fe(n,p)57Mn reaction exceeds 0.2 b for En ∼ 9 MeV. A new excited state is postulated for 57Mn to account for observed data. Several new transitions are reported for decay of levels in 57Fe. Measured cross sections are compared with data obtained from the current ENDF/B evaluation.
