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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.
J. J. Honrubia, J. M. Aragonés
Nuclear Science and Engineering | Volume 93 | Number 4 | August 1986 | Pages 386-402
Technical Paper | doi.org/10.13182/NSE86-A18474
Articles are hosted by Taylor and Francis Online.
A new method for solving the Boltzmann-Fokker-Planck equation is presented. Following the finite element technique, the solution is projected onto a space defined by linear discontinuous basis functions. Three approaches for the angular flux are derived and compared: the first two for a coupled energy-position discretization and the third one for the coupled energy-position-angle discretization. The last was specifically developed for highly anisotropic problems, such as ion beams impinging on an inertial confinement fusion target. Numerical results show clearly that the finite element approaches are higher order approximations. The convergence rate, stability, and performance compared with other methods are examined.