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
Jul 2026
Jan 2026
2026
Latest Journal Issues
Nuclear Science and Engineering
August 2026
Nuclear Technology
July 2026
Fusion Science and Technology
Latest News
The deadline arrives: Checking in on the Reactor Pilot Program
On May 23, 2025, President Trump signed Executive Order 14301, “Reforming Nuclear Reactor Testing at the DOE,” which instructed the Department of Energy to create a Reactor Pilot Program (RPP)—a new system in which companies could pursue DOE authorization to build and test their first-of-a-kind nuclear technologies. EO 14301 set an ambitious goal for that program: three reactors achieving criticality by July 4, 2026.
R. W. Campbell, R. K. Paschall, V. A. Swanson
Nuclear Science and Engineering | Volume 20 | Number 4 | December 1964 | Pages 445-454
Technical Paper | doi.org/10.13182/NSE64-A20986
Articles are hosted by Taylor and Francis Online.
The age of fission neutrons to indium-resonance energy has been measured in AGOT graphite using the point-source technique. Corrections to the data arising from the following factors were investigated: (a) source and foil size, (b) finite dimensions of medium, (c) higher- and/or lower-energy activations, and (d) angular sensitivity of detector foils. The age was determined to be 307.8 ± 1.9 cm2; the fourth and sixth moments were 6.58 ± 0.05 × 106 cm4 and 3.84 ± 0.06 × 1010 cm6, respectively. These agree well with the values of 307.4 ± 1.0 cm2, 6.59 ± 0.06 × 106 cm4, and 4.01 ± 0.09 × 1010 cm6 obtained by Monte Carlo calculations.