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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.
J. W. Meadows
Nuclear Science and Engineering | Volume 49 | Number 3 | November 1972 | Pages 310-316
Technical Paper | doi.org/10.13182/NSE72-A22544
Articles are hosted by Taylor and Francis Online.
Measurements of the 238U:235U fission cross section ratio were carried out in the 2 to 3 MeV region using two different methods to determine the relative masses. The energy dependence of the ratio was measured from 1 to 5 MeV and normalized to the results at 2.5 MeV. The measured value of the ratio at 2.5 MeV is 0.432 ± 0.004.
