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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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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.
Codey Olson, Jesse Snow, Meng-Jen (Vince) Wang, Glenn Sjoden, Edward Cazalas
Nuclear Technology | Volume 209 | Number 9 | September 2023 | Pages 1241-1251
Research Article | doi.org/10.1080/00295450.2023.2203291
Articles are hosted by Taylor and Francis Online.
Here we perform the matching of neutron counts in two detector gasses through capture reactions and radiation transport–optimized moderating materials. One of our detectors uses helium-3 (3He) gas and has been widely used as a neutron detection material in proportional detector tube designs. This study examines boron trifluoride (BF3) as a potential gas for neutron detection in place of 3He based on a previously studied “spectrally matched” design derived from deterministic adjoint analyses that closely mimic the spectral response of 3He. The integrated spectral response of each tube, i.e., the count rate, is calculated and measured at various distances from an isotropic neutron source where similar “total sources” are achieved in either detection system. Our results show the integrated spectral response of a dual BF3 tube detector was within 10% of a single 3He tube when exposed to a similar source. GEANT4 Monte Carlo simulations were used to calculate the total source for each detector and showed count rates within 5% of those produced by MCNP, providing a strong confidence in its behavior in the thermal energy regime. We provide results in this study to partially validate the replacement based on the spectrally matched design, which will lead to further validation through the utilization of multiple neutron spectra via simulated and experimental studies.