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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.
T. M. Tran, J. Ligou
Nuclear Science and Engineering | Volume 79 | Number 3 | November 1981 | Pages 269-277
Technical Paper | doi.org/10.13182/NSE81-A19404
Articles are hosted by Taylor and Francis Online.
The time-dependent linear Fokker-Planck equation governing the transport of fast ions in a spherical host medium is solved in the suprathermal energy range, including both continuous slowing down and angular diffusion. Because of the parabolic nature of the angular dispersion term, an implicit time-centered scheme is proposed. On the other hand, a second-order diamond approximation in energy and space is chosen to avoid the spurious numerical diffusion driven by the usual first-order methods. The last variable, the pitch angle cosine, is discretized by centered finite differences. Good accuracy is demonstrated when comparing the results of the proposed method with the “exact” values given in the literature for some benchmark problems or by checking energy and particle balance equations. A numerical code (CIRCE) based on this scheme has been developed; it can be coupled to standard one-dimensional hydrodynamics codes after a few straightforward modifications.