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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.
Hiroaki Ogawa, Kiyoshi Kiuchi
Nuclear Science and Engineering | Volume 152 | Number 2 | February 2006 | Pages 236-241
Technical Paper | doi.org/10.13182/NSE06-A2578
Articles are hosted by Taylor and Francis Online.
Heavy rare gases like Xe have the highest abundance as fission products formed with dependence on the burnup of nuclear fuels. The interaction between heavy rare gases and low-energy electrons excited by the irradiation effect is very important for understanding the gas release mechanism and for developing the collecting method of radioactive fission product gases. Two types of plasma-testing apparatuses for the opened and closed low-energy plasmas were arranged using the radio frequency exciting source. The excitation behavior was evaluated by measuring the density and the temperature of the excited electrons. The electron density in the opened plasma increased with increase of the ionization energy of each rare gas. However, the electron density in the closed plasma of heavy rare gases (Ar, Kr, and Xe) was enhanced nearly a thousand times higher than that of light rare gases (Ne and He). The difference was interpreted as based on the cross section for energy transfer to the low-energy electron formed by the multisputtering effect on wall surfaces in the closed plasma.