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
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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!
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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.
M. M. Levine, K. E. Roach, D. B. Wehmeyer, P. F. Zweifel
Nuclear Science and Engineering | Volume 7 | Number 1 | January 1960 | Pages 14-20
Technical Paper | doi.org/10.13182/NSE60-A25692
Articles are hosted by Taylor and Francis Online.
The Greuling-Goertzel method is applied to calculation of the slowing down of neutrons in deuterium, and the results compared with the Selengut-Goertzel method, in which the deuterium slowing-down is treated by age theory. It is shown how existing codes for calculating slowing down in hydrogen can be modified in a simple manner to incorporate this treatment of deuterium. Numerical results show excellent agreement between measured and calculated ages, and indicate that a continuous slowing-down model for deuterium is inappropriate. This is in qualitative agreement with the experiments performed by Wade, and in disagreement with Olcott's work. However, it is shown that an age kernel with an age to indium of 100 cm2 may be used to compute the fast leakage from heavy-water systems over a wide range of buckling. The situation concerning agreement with critical experiments remains to be clarified because of large uncertainties in other criticality factors.