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 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
Latest Magazine Issues
Mar 2026
Jan 2026
Latest Journal Issues
Nuclear Science and Engineering
April 2026
Nuclear Technology
February 2026
Fusion Science and Technology
Latest News
Swiss nuclear power and the case for long-term operation
Designed for 40 years but built to last far longer, Switzerland’s nuclear power plants have all entered long-term operation. Yet age alone says little about safety or performance. Through continuous upgrades, strict regulatory oversight, and extensive aging management, the country’s reactors are being prepared for decades of continued operation, in line with international practice.
R. W. Benjamin, K. W. MacMurdo, J. D. Spencer
Nuclear Science and Engineering | Volume 47 | Number 2 | February 1972 | Pages 203-208
Technical Paper | doi.org/10.13182/NSE72-A22397
Articles are hosted by Taylor and Francis Online.
Thermal-neutron fission cross sections and fission resonance integrals were measured for 249Cf and five isotopes of curium with both dual fission chambers and plastic fission track recorders. Measurements were made in the thermal column and core of the SP research reactor. Cross sections were determined through direct comparison with the appropriate 235U fission cross sections, i.e., (effective) = 561.5 b and Iƒ = 268 b. For the resonance integral measurements, the low-energy cutoff has been adjusted to 0.625 eV. The measured cross sections are: