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
Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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.
H. Vonach, A. Pavlik, B. Strohmaier
Nuclear Science and Engineering | Volume 106 | Number 4 | December 1990 | Pages 409-414
Technical Paper | doi.org/10.13182/NSE90-A23766
Articles are hosted by Taylor and Francis Online.
It is demonstrated that (n,2n) cross sections for many medium-mass and heavy nuclei can be determined with high accuracy (∼3%) from existing data on nonelastic cross sections and energy-differential neutron emission cross sections. Using this method, the (n,2n) cross sections for 93Nb, 209Bi, and the natural elements tantalum, tungsten, and lead are determined for a neutron energy of 14 A MeV. There is reasonable agreement with the existing measurements; however, our results considerably reduce the uncertainties of these cross sections. For lead, which is especially important as a possible neutron multiplier material in fusion reactors, the accuracy requested for this purpose is achieved. It is further demonstrated that the peak values of the (n,2n) excitation functions for heavy nuclei (A > 190) show a very smooth behavior with mass number, which allows prediction of unknown (n,2n) cross sections with accuracies better than 3%.