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 9–12, 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
Leading the charge: INL’s role in advancing HALEU production
Idaho National Laboratory is playing a key role in helping the U.S. Department of Energy meet near-term needs by recovering HALEU from federal inventories, providing critical support to help lay the foundation for a future commercial HALEU supply chain. INL also supports coordination of broader DOE efforts, from material recovery at the Savannah River Site in South Carolina to commercial enrichment initiatives.
K. Shure
Nuclear Science and Engineering | Volume 78 | Number 2 | June 1981 | Pages 185-190
Technical Note | doi.org/10.13182/NSE81-A20106
Articles are hosted by Taylor and Francis Online.
Decay rate data of mixed fission products are presented from thermal neutron fission of 233U, 235U, and 239Pu and from fast fission of 238U and 232Th in the absence of neutron absorption by the fission products. The effect of neutron absorption by the fission products on decay rate is shown to be relatively small for conditions that exceed current light water reactor conditions. Decay heat data from fission products of 233U and 232Th in the absence of neutron absorption are provided which supplement similar data for 235U, 238U, and 239Pu given in the new American National Standards Institute/American Nuclear Society 5.1 Standard.
