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
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
Meeting Spotlight
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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
Aug 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
October 2024
Nuclear Technology
Fusion Science and Technology
August 2024
Latest News
New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
Mark Goldsmith
Nuclear Science and Engineering | Volume 25 | Number 3 | July 1966 | Pages 236-241
Technical Paper | doi.org/10.13182/NSE66-A17830
Articles are hosted by Taylor and Francis Online.
The effects of spin polarization on the slowing down of neutrons in water is investigated. Spin-dependent scattering cross sections are derived from a combination of resonance parameters, experimental phase shifts, and optical model calculations. It is shown that the effect of polarization on the age of neutrons slowing down from an unpolarized plane source in an infinite moderator may be rigorously obtained from the P-1 approximation to the transport equation. One finds that the age of fission neutrons slowing down in water would be decreased by 0.8% by polarizing collisions with oxygen below 2.6 MeV were it not for depolarizing collisions with hydrogen that reduce this figure to 0.2%.
