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.
H. Ibarra, Jr. and R. Sher
Nuclear Science and Engineering | Volume 29 | Number 1 | July 1967 | Pages 15-27
Technical Paper | doi.org/10.13182/NSE67-A17806
Articles are hosted by Taylor and Francis Online.
An experimental method for the measurement of thermal-neutron spectra by neutron-induced radioactivities in selected isotopes is described. Criteria from theoretical and experimental considerations are developed and applied for the selection of such detectors. The applications and limitations of the method are discussed. The experimental technique has been applied to investigate neutron spectra in borated H2O solutions, using four detectors: 164Dy, 176Lu, 151Eu, and 197Au. The spectra obtained are in good agreement with the known spectra.
