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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Fusion Science and Technology
July 2025
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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.
Samuel G. Durbin II, Timothy P. Koehler, Jefferey J. R. Reperant, Minami Yoda, Said I. Abdel-Khalik, Dennis L. Sadowski
Fusion Science and Technology | Volume 45 | Number 1 | January 2004 | Pages 1-10
Technical Paper | doi.org/10.13182/FST04-A419
Articles are hosted by Taylor and Francis Online.
A lattice consisting of arrays of stationary turbulent liquid sheets has been proposed for the HYLIFE-II inertial fusion energy reactor design to allow target injection and driver-beam propagation while protecting the first walls from damaging radiation. Interference between these sheets and the driver beams must be avoided, placing strict requirements on sheet free-surface fluctuations. Experiments were performed on nearly prototypical liquid sheets to determine the surface ripple and the absolute position of the free surface with respect to the nozzle exit. Planar laser-induced fluorescence was used to directly image the free surface at downstream distances up to 25 times the jet thickness (i.e., short dimension) at the nozzle exit for Reynolds numbers up to 130 000. Surface ripple, calculated using two different methods, was compared for two nozzle and two flow straightener designs. The surface ripple was found to be <0.05 (versus the current HYLIFE-II requirement of 0.07). The mean thickness of the sheet was found to decrease with increasing x. This work should be useful in establishing the minimum distance between neighboring jets to avoid interference with the driver beams and to provide quantitative geometric data for shielding and neutronics analyses of such systems.