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.
Explore membership for yourself or for your organization.
Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
Fusion Science and Technology
August 2025
Latest News
IAEA program uses radioisotopes to protect rhinos
After two years of testing, the International Atomic Energy Agency and the University of the Witwatersrand in Johannesburg, South Africa, have begun officially implementing the Rhisotope Project, an innovative effort to combat rhino poaching and trafficking by leveraging nuclear technology.
G. de Saussure, E. G. Silver
Nuclear Science and Engineering | Volume 5 | Number 1 | January 1959 | Pages 49-54
Technical Paper | doi.org/10.13182/NSE59-A27329
Articles are hosted by Taylor and Francis Online.
A fast coincidence technique was employed to measure the relative prompt-neutron yields per fission of U233, U235, Pu239, and Pu241 induced by thermal neutrons. The values obtained were ν23/ν25 = 1.02 + 0.01, ν49/ν25 = 1.23 ± 0.01, and ν41/ν25 = 1.295 ± 0.02, where ν23, ν25, ν49, and ν41 designate the prompt-neutron yields of U233, U235, Pu239, and Pu241, respectively.
