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
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
Mar 2025
Jul 2024
Latest Journal Issues
Nuclear Science and Engineering
March 2025
Nuclear Technology
Fusion Science and Technology
February 2025
Latest News
ANS 2025 election is open
The American Nuclear Society election is now open. Members can vote for the Society’s next vice president/president-elect and treasurer as well as six board members (four U.S. directors, one non-U.S. director, and one student director). Completed ballots must be submitted by 1:00 p.m. (EDT) on Tuesday, April 15, 2025.
O. D. Simpson, F. B. Simpson, J. A. Harvey, G. G. Slaughter, R. W. Benjamin, C. E. Ahlfeld
Nuclear Science and Engineering | Volume 55 | Number 3 | November 1974 | Pages 273-279
Technical Paper | doi.org/10.13182/NSE74-A23454
Articles are hosted by Taylor and Francis Online.
Neutron transmission measurements have been made on two high-purity samples of 243Am having inverse thicknesses of 1288.2 and 279.3 b/atom, respectively. Data were collected from 0.5 to 1000 eV using the Oak Ridge Electron Linear Accelerator. High resolution data were taken using 10- and 30-nsec bursts of 140-MeV electrons, 10-nsec channel widths, and a flight path of 18.576 m. An average value of Ty of 39 ± 1 meV was determined from shape analysis of 24 resonances below 18 eV. Single-level Breit-Wigner resonance parameters were obtained from area analysis up to 250 eV. The average level spacing between resonances was found to be 0.68 ± 0.06 eV. An s-wave neutron strength function of (0.96 ± 0.10) × 10≈4 was determined from the resonance parameters, The resonance-absorption integral for neutrons with energies above 0.625 eV was determined to be 1810 ± 70 b from the resonance parameters.
