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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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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.
H. I. Liou, R. E. Chrien, R. C. Block, K. Kobayashi
Nuclear Science and Engineering | Volume 67 | Number 3 | September 1978 | Pages 326-333
Technical Paper | doi.org/10.13182/NSE78-A27253
Articles are hosted by Taylor and Francis Online.
The size of the neutron cross-section minimum in 45Sc is important in the optimum design of filters for the production of 2-keV neutron beams. We have measured the scandium total cross section from 5 eV to 22 keV, an energy region in which high-resolution and high-precision cross-section data did not previously exist. The samples used are in metallic form having thicknesses ranging from 0.2 to 30.5 cm. We find that the cross section at the (2.05 ± 0.02)-keV minimum is (0.71 ± 0.03) b, in sharp contrast to the previously accepted value, 0.085 b. The size of the cross section indicates that an optimum scandium filter would be shorter than what is conventionally used. An R-function shape fit with constraints from the known thermal cross sections showed that J = 3 scattering dominates at thermal energy, in contradiction to a previous result obtained by polarization techniques. Our conclusion is supported by 45Sc(n, γ) spectra, and the transmission measurements using polarized neutrons and targets. Scandium level parameters were extracted for each observed resonance up to 22 keV. S-wave strength functions and average level spacings were also evaluated for both spin states.