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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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No impact from Savannah River radioactive wasps
The news is abuzz with recent news stories about four radioactive wasp nests found at the Department of Energy’s Savannah River Site in South Carolina. The site has been undergoing cleanup operations since the 1990s related to the production of plutonium and tritium for defense purposes during the Cold War. Cleanup activities are expected to continue into the 2060s.
G. Walter, B. Leugers, F.Käppeler, Z. Y. Bao, G. Reffo, F. Fabbri
Nuclear Science and Engineering | Volume 93 | Number 4 | August 1986 | Pages 357-369
Technical Paper | doi.org/10.13182/NSE86-A18471
Articles are hosted by Taylor and Francis Online.
The neutron capture cross sections of the stable krypton isotopes were determined in the energy interval from 4 to 250 keV using a C6D6-detector system in conjunction with the time-of-flight technique. The energy resolution of the measurement was 4% at 20 keV and 6% at 100 keV, and the experimental uncertainties were typically 6 to 10%. The measurements were complemented by statistical model calculations of all krypton isotopes in the mass range 78 < A < 86 to also obtain reliable cross sections for the unstable nuclei 79,81,85Kr. These calculations were based on local systematics for all relevant parameters, and the results were estimated to show uncertainties of 20 to 25%. Maxwellian average cross sections were calculated for kT = 30keV.