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
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.”
George H. Miley
Nuclear Science and Engineering | Volume 24 | Number 4 | April 1966 | Pages 322-331
Technical Paper | doi.org/10.13182/NSE66-A16400
Articles are hosted by Taylor and Francis Online.
An analysis of a parallel-plate UO2-fueled Fission Electric Cell is developed that includes a detailed treatment of the fission-fragment initial-energy spectrum, energy-charge loss during slowing, and energy dependence of the total range. The treatment of fragment transport is based, as much as possible, on correlations of experimental data. However, available data are skimpy, and several discrepancies, e.g., between available differential and integral energy-loss data, are noted. The importance of an accurate fragment transport model is demonstrated by the differences in efficiencies obtained from this detailed treatment, as opposed to earlier calculations that used simpler models, e.g., relative differences between models of as much as 15 and 80% are attributed to the treatment of the fragment charge and energy loss, respectively. The calculations are also shown to be fairly sensitive to the total-range-mass correlation, but only weakly dependent on the choice of the initial fragment charge. While efficiencies for the parallel-plate cell with reasonable fuel-layer thickness are found to range from 2 to 10%, efficiencies for cylindrical or spherical geometry may be 5 to 6 times this, and the concept may be competitive for certain specialized applications.