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Division Spotlight
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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.
Pekka Jauho, Markku Rajamäki
Nuclear Science and Engineering | Volume 43 | Number 2 | February 1971 | Pages 145-153
Technical Paper | doi.org/10.13182/NSE71-A21262
Articles are hosted by Taylor and Francis Online.
The solutions to the one-dimensional energy-dependent Boltzmann equations for two different media are shown to possess such a full-range completeness property that an arbitrary function satisfying a Hölder condition can be expanded in terms containing solutions to both equations. These solutions are given by Leonard and Ferziger. This property makes it possible to solve energy-dependent neutron transport problems for two adjacent media. In comparison with half-space problems, one must solve two more inhomogeneous Fredholm integral equations. The scheme of the extension to multilayer system is also represented. In using the multigroup method, the series solutions of the Fredholm equations are rapidly convergent, if the energy dependences of the total cross sections in both adjacent media are roughly of the same form.