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
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
Jul 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
Fusion Science and Technology
July 2025
Latest News
Spent fuel transfer project completed at INL
Work crews at Idaho National Laboratory have transferred 40 spent nuclear fuel canisters into long-term storage vaults, the Department of Energy’s Office of Environmental Management has reported.
A. Hébert
Nuclear Science and Engineering | Volume 94 | Number 1 | September 1986 | Pages 1-11
Technical Paper | doi.org/10.13182/NSE86-A17111
Articles are hosted by Taylor and Francis Online.
Several preconditioning techniques were applied to the power method, in conjunction with a symmetric variational acceleration strategy, to facilitate solution of reactor problems. First, the drawbacks in an approximate inversion were corrected by fitting an error recovery term to the power method. Second, a variational extrapolation technique that does not require knowledge of the dominance ratio was introduced. Validation results are reported for the International Atomic Energy Agency two- and three-dimensional benchmarks and for a two-dimensional pressurized water reactor representation.