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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.
S. N. Cramer
Nuclear Science and Engineering | Volume 124 | Number 3 | November 1996 | Pages 398-416
Technical Paper | doi.org/10.13182/NSE96-A17919
Articles are hosted by Taylor and Francis Online.
Methods for coupling multiple forward and adjoint radiation transport Monte Carlo calculations with no statistical error propagation are presented. Correlated forward and adjoint particle histories are uniformly initialized on arbitrarily placed intermediate source boundaries throughout the calculational system. In applying the method to multilegged duct streaming problems, these source boundaries are placed at the duct leg intersections. The necessary forward and adjoint fluxes for the coupling procedure are each computed from an opposite-mode calculation. The no-error-propagation feature is the result of an exact correlation of all phase-space variables for coupled forward-adjoint particle histories at each boundary. For ducts of more than two legs, next-event estimation between forward and adjoint collision sites across arbitrarily placed intermediate scoring boundaries is necessary to achieve the variable correlation. Comparison of calculational results between the coupled and standard methods for two- and three-legged ducts are presented.