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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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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.
Myron B. Reynolds
Nuclear Science and Engineering | Volume 3 | Number 4 | April 1958 | Pages 428-434
Technical Paper | doi.org/10.13182/NSE58-A25479
Articles are hosted by Taylor and Francis Online.
Data on the diffusion of fission krypton from irradiated 20 weight per cent uranium-aluminum alloy are presented. At temperatures below 640°C (the eutectic) there was no measurable loss of radiokrypton from this alloy during annealing periods of up to three weeks. At temperatures above the eutectic gas evolution occurred with a time dependence in rough agreement with the theoretical prediction for diffusion from spherical particles. The nature of the diffusion process for rare gases in metallic systems is discussed with particular reference to the limitations imposed on diffusion rate by solubility and available concentration gradient. The basic difference between the behavior of fission gases in dispersion-type nuclear fuels and in homogeneous solid-type fuels is outlined. The data on the uranium-aluminum alloy system are interpreted in light of this discussion.