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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.
Richard B. Jones and P. F. Zweifel
Nuclear Science and Engineering | Volume 59 | Number 4 | April 1976 | Pages 429-436
Technical Note | doi.org/10.13182/NSE76-A26843
Articles are hosted by Taylor and Francis Online.
The Goertzel reactor construct and the Goertzel-Wilkins theorem proved for this class of reactors are applied to a moderator fuel system at pressurized water reactor temperature and pressure conditions. The viability of the minimum critical mass as a global parameter to assess the integrity of energy group structures is investigated. The calculations are performed in diffusion and transport theory and up to eight energy groups are considered. Some initial guidelines based on the minimum critical mass for attaining nearly equivalent accuracy by using a fewer number of “properly” structured energy groups are discussed. Numerical results are still inconclusive but again suggest that transport theoretical calculations are pointless unless spectral codes that compute group constants include angular dependence.