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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.
D. B. Lombard, C. H. Blakchard
Nuclear Science and Engineering | Volume 7 | Number 5 | May 1960 | Pages 448-453
Technical Paper | doi.org/10.13182/NSE60-A25743
Articles are hosted by Taylor and Francis Online.
A redetermination of the age τ (= ⅙ 〈r2〉) for neutrons of indium-resonance energy (1.46 ev) from a point U235 fission source is reported. Foils were irradiated in a geometrically simple arrangement in the Penn State Reactor pool, and counted in a standard manner. The value obtained, τ = 27.3 ± 0.9 cm2, is in better agreement with current theory than those from previous measurements. The spatial distribution found here differs most markedly from those observed in previous experiments by having a larger slope in the region within a few centimeters of the source.