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.
F. M. Mann, M. Schreiber, R. E. Schenter T. R. England
Nuclear Science and Engineering | Volume 87 | Number 4 | August 1984 | Pages 418-431
Technical Paper | doi.org/10.13182/NSE84-A18508
Articles are hosted by Taylor and Francis Online.
Delayed-neutron precursor data are being compiled in preparation of a new ENDF/B evaluation of delayed-neutron data. The probability of delayed-neutron emission, Pn, has been updated using ENDF/B-VM fission product yields and ENDF/B-V fission product decay data. Evaluations of 77 precursors are presented along with their effect on fission yields, Pn systematics, and calculational models.
