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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.
K. Debertin, U. Schötzig, K. F. Walz
Nuclear Science and Engineering | Volume 64 | Number 3 | November 1977 | Pages 784-786
Technical Note | doi.org/10.13182/NSE77-A27108
Articles are hosted by Taylor and Francis Online.
Gamma rays from the fission product nuclides 140Ba and 140La are frequently used for monitoring fission rates in neutron activation detectors consisting of fissionable materials. Systematic errors that can occur when the 1596-keV line of 140La is taken as the monitor line can be avoided by using the 537-keV line of 140Ba. The gamma-ray emission probabilities per decay of 140Ba and 140La were redetermined for the more abundant lines with a relative uncertainty of about ±1% at the 68% confidence level.
