ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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!
Latest Magazine Issues
Aug 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
October 2024
Nuclear Technology
Fusion Science and Technology
August 2024
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.
C. Y. Fu, F. B. Guimaraes, L. C. Leal
Nuclear Science and Engineering | Volume 143 | Number 2 | February 2003 | Pages 164-176
Technical Paper | doi.org/10.13182/NSE03-A2327
Articles are hosted by Taylor and Francis Online.
High-energy transport codes for the design of accelerator-driven systems such as the Spallation Neutron Source use nuclear reaction models as the incident particle, and the secondary particles are transported through various materials. These reaction models are computationally fast but are unreliable at energies below ~200 MeV. As a partial remedy, an evaluated cross-section library up to 150 MeV known as LA150 was developed by international cooperation and made available for such design work. In the present project we have been developing a model code suitable for improving LA150 and extending it to higher energies. This new model code combines microscopically the semiclassical results of an intranuclear-cascade model with the spin-dependent counterparts of a preequilibrium Hauser-Feshbach model. To achieve this microscopic combination, an approximation, explained in this paper, is needed to add spin distributions to the semiclassical excitation spectra in every residual nuclide. The initial capability of this code is demonstrated by comparisons with experimental production cross sections of the radioisotopes 56Co, 55Co, 54Mn, 52Mn, 52Fe, 51Cr, 48Cr, 48V, 47Sc, and 46Sc induced by proton projectiles on Fe from reaction thresholds to 3 GeV. The overall agreement of our calculated results with experimental data looks very good in view of the 29 contributions in recent model code intercomparisons with measurements.