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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.
Jacob Bigeleisen, Willis B. Hammond, Sam Tuccio
Nuclear Science and Engineering | Volume 83 | Number 4 | April 1983 | Pages 473-481
Technical Paper | doi.org/10.13182/NSE83-A18650
Articles are hosted by Taylor and Francis Online.
It is shown experimentally that fluoroform undergoes rapid protium-deuterium exchange with ammonia, methylamine, and cyclohexylamine in the presence of the respective conjugate bases of these protolytic solvents. Equilibrium protium-deuterium separation factors between fluoroform and water, ammonia, methane, ethane, and hydrogen at 25°C are calculated from molecular data. Schematic feed cycles are developed from these data to provide the feed for a commercial deuterium laser isotope separation plant using fluoroform under recycle as the working medium. Feed cycles considered are based on hydrogen, ammonia, or water as feedstocks. It is shown, from simple qualitative considerations, that hydrogen gas presents many advantages over the use of ammonia or water as feedstock material. Its only disadvantage is the limited production of D2O that can be realized in a plant operating on satellite hydrogen.