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.
R. M. Harbour, K. W. MacMurdo, F. J. McCrosson
Nuclear Science and Engineering | Volume 50 | Number 4 | April 1973 | Pages 364-369
Technical Paper | doi.org/10.13182/NSE73-A26571
Articles are hosted by Taylor and Francis Online.
The partial 2200-m/sec equivalent neutron capture cross sections (σ2200) and neutron capture resonance integrals (Ic) of 432.7-yr 241 Am to produce 152-yr 242mAm and 16.01-h 242gAm were measured relative to 59Co standards. The number of 242mAm atoms produced per 241 Am target atom was determined by high precision mass spectrometry after chemical purification of americium. The number of 242gAm atoms produced per 241Am target atom was determined by measuring the alpha activity of its 164.4-day 242 Cm daughter. The measured values for 241 Am are as follows: σ2200 (to 242mAm) = 83.8 ± 2.6 b, Ic (to 242mAm) = 208 ± 18 b (0.369-eV cutoff), σ2200 (to 242gAm) = 748 ± 20 b, and Ic(to 242gAm) = 1330 ± 117 b (0.369-eV cutoff). Measured values are compared with those calculated from the ENDF/B-III neutron cross-section library.
