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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.
K. V. Subbaiah, A. Natarajan
Nuclear Science and Engineering | Volume 96 | Number 4 | August 1987 | Pages 330-342
Technical Paper | doi.org/10.13182/NSE87-A16396
Articles are hosted by Taylor and Francis Online.
Transport calculations have been performed using the one-dimensional gamma-ray transport code ASFIT for materials of high atomic number (Z), such as tin, tungsten, lead, and uranium, for incident energies in the range of 0.030 to 0.5 MeV, where the fluorescent X rays are important. The relative impact of different components of K X rays on the spectra and buildup factors at various depths in the medium has been assessed for a typical case. Approximate analytic results are derived and compared with the computed X-ray contributions. Point isotropic air and medium response buildup factors computed for these materials have been given, filling the gap in the existing standard tables. Since the buildup factors are not amenable for conventional interpolation in this region, the values are given at close intervals of incident photon energy.