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
2026 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
Latest Magazine Issues
Aug 2026
Jan 2026
2026
Latest Journal Issues
Nuclear Science and Engineering
October 2026
Nuclear Technology
September 2026
Fusion Science and Technology
August 2026
Latest News
Front-end nuclear fuel supply cooperation: Turning allied interdependence into strategic advantage
The global nuclear revival, which is fueled by unprecedented demand for firm, affordable, dispatchable power for artificial intelligence and data center build-out, energy security imperatives, and climate commitments, has exposed a structural reality of the Western fuel cycle: No single allied nation currently possesses the full suite of front-end capabilities. From mining through conversion, enrichment, fabrication, and the emerging deconversion and metallization steps required for reactor fuels, capability is distributed across Canada, France, Japan, the United Kingdom, and the United States (collectively, the “Sapporo Five”), as well as a small group of close partners.
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.
