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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.
S. L. Graham, M. Ahmad, S. M. Grimes, H. Satyanarayana, S. K. Saraf
Nuclear Science and Engineering | Volume 95 | Number 1 | January 1987 | Pages 60-69
Technical Paper | doi.org/10.13182/NSE87-A20432
Articles are hosted by Taylor and Francis Online.
Cross sections and spectra for (n,xp) and (n,xα) reactions on 58Ni and 60Ni at energies of 9.4 and 11 MeV and for 58Ni at 8 MeV have been measured. This energy range spans the threshold for the (n,n’p) reaction. Based on comparison of Hauser-Feshbach calculations with the measured spectra, this reaction provides a large fraction of the proton spectrum at 11 MeV for 58Ni. Both (n,xp) and (n,xα) processes appear to be due largely to compound nuclear processes. Comparison of the measurements obtained here and those previously published at 15 MeV with calculations allows us to infer information about the nuclear level densities. Cross sections for (n,d) reactions are sufficiently small that only upper limits can be derived for them.