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
Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
Meeting Spotlight
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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
Jan 2025
Jul 2024
Latest Journal Issues
Nuclear Science and Engineering
February 2025
Nuclear Technology
Fusion Science and Technology
Latest News
DOE-EM awards $37.5M to Vanderbilt University for nuclear cleanup support
The Department of Energy’s Office of Environmental Management announced on January 16 that it has awarded a noncompetitive financial assistance agreement worth $37.5 million to Vanderbilt University in Nashville, Tenn., to aid the department’s mission of cleaning up legacy nuclear waste.
M. Goldsmith
Nuclear Science and Engineering | Volume 15 | Number 4 | April 1963 | Pages 382-387
Technical Paper | doi.org/10.13182/NSE63-A26454
Articles are hosted by Taylor and Francis Online.
A few-group method of calculating the epithermal flux in the vicinity of a slab absorber is developed. Non-moderating absorbers are treated in the P-1, P-3, and DP-1 approximations by applying blackness boundary conditions at the slab surfaces. A code which generates these coefficients is described. Comparison with Monte Carlo calculations indicates that six epithermal groups are needed to calculate the absorption rate to within 2% in a highly absorbing (optical depth = 10.6 at 0.025 ev) boron plate. An iterative method of treating moderating absorbers is also developed. Approximately three quarters of the error caused by neglect of moderation is removed after a single iteration.
