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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Powering the future: How the DOE is fueling nuclear fuel cycle research and development
As global interest in nuclear energy surges, the United States must remain at the forefront of research and development to ensure national energy security, advance nuclear technologies, and promote international cooperation on safety and nonproliferation. A crucial step in achieving this is analyzing how funding and resources are allocated to better understand how to direct future research and development. The Department of Energy has spearheaded this effort by funding hundreds of research projects across the country through the Nuclear Energy University Program (NEUP). This initiative has empowered dozens of universities to collaborate toward a nuclear-friendly future.
J. J. Honrubia, J. E. Morel
Nuclear Science and Engineering | Volume 104 | Number 2 | February 1990 | Pages 91-111
Technical Paper | doi.org/10.13182/NSE90-A23707
Articles are hosted by Taylor and Francis Online.
A new weighted diamond scheme is developed to solve the linear Fokker-Planck equation for suprathermal charged-particle transport. Such a scheme is based on the preservation of the asymptotic behavior of the linear discontinuous finite element scheme previously proposed. A simpler steplike scheme has been also considered. The results show that the weighted diamond scheme is as accurate as the linear discontinuous one, preserving the energy-position-angle correlation of charged-particle slowing down with less calculational effort. On the contrary, the steplike scheme does not preserve this coupling, giving results similar to those obtained by multigroup methods. A spectral analysis of the iteration of the scattering term shows that the convergence process can be unacceptably slow when the momentum transfer cross section is dominant. Consequently, the weighted diamond scheme has been accelerated by the S2 synthetic method, significantly improving its convergence rate. Finally, the results show that the accelerated weighted diamond scheme is highly effective for electron transport calculations.