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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.
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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.
A. Borella, K. Volev, A. Brusegan, P. Schillebeeckx, F. Corvi, N. Koyumdjieva, N. Janeva, A. A. Lukyanov
Nuclear Science and Engineering | Volume 152 | Number 1 | January 2006 | Pages 1-14
Technical Paper | doi.org/10.13182/NSE06-A2557
Articles are hosted by Taylor and Francis Online.
The neutron capture cross section of thorium has been measured in the energy region between 4 and 140 keV at the GELINA time-of-flight facility of the Institute for Reference Materials and Measurements in Geel, Belgium. The gamma rays from capture events were detected by two C6D6 liquid scintillators, placed 14.37 m from the neutron source. The shape of the neutron flux was measured with a 10B-loaded ionization chamber. To obtain a detection efficiency independent of the gamma cascade and proportional to the total excitation energy, the pulse-height weighting technique was applied. The data have been normalized to the well-isolated and almost saturated 232Th resonance at 23.5 eV. The systematic uncertainties related to the normalization and weighting function, using an internal saturated resonance, are ~1.5%. An additional systematic uncertainty of 0.5% results from the self-shielding and multiple scattering corrections.Between 4 and 140 keV, our data are ~9 and 6.5% higher than the data of Kobayashi et al. and Macklin et al., respectively, and in good agreement with the data of Poenitz and Smith. Below 15 keV our data deviate by up to 30% from the data reported by Wisshak et al. Our data have been analyzed in terms of average level parameters. The resulting parameters are consistent with the resolved resonance parameters deduced from the transmission measurements of Olsen et al.