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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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ANS joins others in seeking to discuss SNF/HLW impasse
The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”
M. Drosg, P. W. Lisowski
Nuclear Science and Engineering | Volume 175 | Number 1 | September 2013 | Pages 19-27
Technical Paper | doi.org/10.13182/NSE12-7
Articles are hosted by Taylor and Francis Online.
Reliable nonelastic cross-section measurements of fast neutrons with 3He are sparse. In the energy range up to 40 MeV, the data are dominated by unpublished nonelastic n-3He values derived from measurements made in 1982. As mentioned elsewhere, n-3He elastic cross-section data reported in the same report had not been corrected for the outgoing neutron attenuation even though the sample size was >7 mol. To check the database of existing nonelastic n-3He cross-section data, and in particular those from 1982, a detailed balance calculation of time-reversed charged-particle data was performed. Because there are few existing independent data, we provide an updated detailed balance analysis in the energy range up to 31 MeV for both 3He(n,p)3H and 3He(n,d)2H, supplying accurate absolute-angle-dependent differential cross sections. Subtracting the integrals of these and the elastic cross sections from the total provides a prediction for the sum of the 3He(n,2n)2p and 3He(n,n + p)2H cross sections. The relevant experimental data are compared with their time-reversed counterparts.