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
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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
Prepare for the 2025 Nuclear PE Exam with ANS guides
The next opportunity to earn professional engineer (PE) licensure in nuclear engineering is this fall, and now is the time to sign up and begin studying with the help of materials like the online module program offered by the American Nuclear Society.
K. J. Yost, S. M. Kremer
Nuclear Science and Engineering | Volume 36 | Number 2 | May 1969 | Pages 220-231
Technical Paper | doi.org/10.13182/NSE69-A19719
Articles are hosted by Taylor and Francis Online.
A simplified cascade model for the calculation of neutron-capture gamma-ray spectra is compared with experiment. In the context of the model, the simplifying assumptions involve extrapolations of measured multipole transition probabilities and equal spin-branching probabilities. Calculated and measured neutron capture gamma-ray spectra are compared for 25 elements spanning virtually the entire mass scale. Substantial agreement between calculated and measured spectra is obtained for medium and heavy nuclei. An analytical method for obtaining neutron energy-dependent capture gamma-ray production cross sections is developed. A comparison between calculated and measured fast neutron capture gamma-ray yields in 64Cu is presented.