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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.
Benjamin S. Wang, George H. Miley
Nuclear Science and Engineering | Volume 52 | Number 1 | September 1973 | Pages 130-141
Technical Paper | doi.org/10.13182/NSE73-A23296
Articles are hosted by Taylor and Francis Online.
A Monte Carlo simulation model for radiation-induced plasmas with nonlinear properties due to recombination has been developed employing a piecewise-linearized predict-correct technique. Several variance reduction techniques are used, including antithetic variates. The resulting code is applied to the determination of the electron energy distribution for a noble-gas plasma created by alpha-particle irradiation. Results are presented for helium with an electron source rate from 1014 to 1018 electrons/(cm3 sec), initial energies from 70 to 1500 eV, pressures from 10 to 760 Torr, and electric-field-to-pressure ratios from 0 to 10 V/(cm Torr). The low-energy portion of the distribution function approaches a Maxwellian for zero field and Druyvesteyn’s distribution with an applied electric field. However, above the ionization potential and extending to the source energy, a parabolic-shaped distribution (tail) occurs.