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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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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.
J. M. Kallfelz, G. B. Bruna, G. Palmiotti, M. Salvatores
Nuclear Science and Engineering | Volume 62 | Number 2 | February 1977 | Pages 304-309
Technical Note | doi.org/10.13182/NSE77-A26966
Articles are hosted by Taylor and Francis Online.
The application of generalized perturbation theory, both time dependent and static, to burnup problems is discussed. Simple analytical forms, applicable for many cases of interest, are derived for the time-dependent expressions. The influence of changes in Φ(E,r) during the cycle on the production of the plutonium isotopes is calculated for a typical liquid-metal fast breeder reactor case, using perturbation theory. Comparison of the results with direct calculations indicates that perturbation theory gives satisfactory accuracy for this problem.
