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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.
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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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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.
Toshikazu Takeda, Yuichiro Kanayama
Nuclear Science and Engineering | Volume 131 | Number 3 | March 1999 | Pages 401-410
Technical Paper | doi.org/10.13182/NSE99-A2042
Articles are hosted by Taylor and Francis Online.
The multiband method has been extended to treat the resonance interference effect between two nuclides based on the intermediate resonance approximation. The integral equation of the flux belonging to different bands of the two nuclides is derived for a heterogeneous cell system. In the equation, a new band parameter is introduced. The new parameter denotes the conditional probability that a nuclide takes a certain band under the condition that the other nuclide takes another band. The calculational procedure of band parameters is described in a homogeneous medium. This method has been applied to a homogeneous medium and a thermal reactor cell containing 235U and 238U. The effective cross sections calculated by this method and the conventional multiband method without considering the interference effect are compared with the results by a reference continuous-energy Monte Carlo method. It is seen that the conventional multiband method greatly overestimates the fission and capture cross sections of 235U for energy groups where there are both resonances of 235U and 238U, and the present method remarkably improves the overestimation.