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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
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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.
S. R. Dwivedi
Nuclear Science and Engineering | Volume 80 | Number 1 | January 1982 | Pages 172-178
Technical Paper | doi.org/10.13182/NSE82-A21413
Articles are hosted by Taylor and Francis Online.
Neutron or radiation transport kernels in general have two factors, namely, the space transition part and the energy-angle transition part. Importance biasing schemes are obtained here for these two factors separately leading to zero variance estimation by Monte Carlo. These biasing schemes are different from the one obtained by straightforward extension of importance biasing of the transport kernel. New biasing schemes are obtained for collision, track-length, and expectation estimators. Using the moments equations developed by Amster and Djomehri and extended by Lux to treat nonanalog games it is shown that these new biasing schemes lead to zero variance in the Monte Carlo estimation of reaction rate type of quantities.