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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
T. E. Dudley, P. B. Daitch
Nuclear Science and Engineering | Volume 25 | Number 1 | May 1966 | Pages 75-84
Technical Paper | doi.org/10.13182/NSE66-A17503
Articles are hosted by Taylor and Francis Online.
The monoenergetic transport equation is solved in the P3 approximation for a cylindrical rod in a square cell. Reflecting boundary conditions applied on the boundary of the cell represent exactly the geometry of cylindrical rods in an infinite square-lattice array. By comparison with Monte Carlo calculations, the P3 calculations appear to approach the exact transport solution at about the same rate in two dimensions as in one dimension. For the cases investigated, the scalar flux in the central absorbing rod is rather independent of the angular position. This appears to be the reason for the success of the Wigner-Seitz equivalent cylindrical cell, with various outer boundary conditions, in predicting flux disadvantage factors. Flux traverses in the square cell and in the Wigner-Seitz equivalent cylindrical cell are also illustrated.
