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Breaking ground on a new approach to construction
The drive to Kairos Power’s reactor demonstration site in Oak Ridge, Tenn., is not only scenic—it’s historic. Nearly 85 years ago, roughly 30,000 construction workers transformed orchards and farmland into a key Manhattan Project site. Depending on your route, you may pass by one of the three gatehouses that were once military checkpoints controlling access to Atomic Energy Commission production facilities.
W. C. Redman, M. M. Bretscher
Nuclear Science and Engineering | Volume 31 | Number 2 | February 1968 | Pages 247-253
Technical Paper | doi.org/10.13182/NSE68-A18237
Articles are hosted by Taylor and Francis Online.
A combination of relative reactivity measurements and absolute counting techniques has been applied to determine the epicadmium capture-to-fission ratio for 235U. Significant features of this procedure are its requirement of only a moderate neutron flux, the application of 252Cf and manganese to measure the relative importance of fission and absorbed neutrons, and the use of methods that differ from those applied in the high fluence procedures for α measurements. The resulting value of 0.519 ± 0.023, for infinite sample dilution, l/E spectrum, and 0.5-eV low-energy cutoff, is in good agreement with recent results from high fluence irradiations and differential cross-section data.