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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.
S. G. Carpenter
Nuclear Science and Engineering | Volume 21 | Number 4 | April 1965 | Pages 429-440
Technical Paper | doi.org/10.13182/NSE65-A18787
Articles are hosted by Taylor and Francis Online.
Reactivity effects of various materials of interest to epithermal and fast reactors have been measured in a series of neutron spectra with median energies of neutrons causing fission ranging from 422 keV to 8.5 eV. An oscillator technique capable of sensitivities of 10−8 Δk was used. In addition, a power-history or ‘reactivity-vs-time’ method has been developed for fast but less sensitive reactivity measurements. It has been used to obtain radial reactivity traverses and rod calibrations and for other routine reactivity measurements.
