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The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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Marco Island, FL|JW Marriott Marco Island
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Prepare for the nuclear PE exam with online modules and a practice exam
The next opportunity to earn professional engineer (P.E.) licensure in nuclear engineering is this fall. Now is the time to sign up and begin studying with the help of a new online module program from the American Nuclear Society.
L. L. Snead, K. J. Leonard, G. E. Jellison, Jr., Mohamed Sawan, Tom Lehecka
Fusion Science and Technology | Volume 56 | Number 2 | August 2009 | Pages 1069-1077
Fusion Materials | Eighteenth Topical Meeting on the Technology of Fusion Energy (Part 2) | dx.doi.org/10.13182/FST09-26
Articles are hosted by Taylor and Francis Online.
Dielectric mirrors have been considered for both magnetic and inertial confinement systems. Such mirrors are comprised of multiple thin bi-layers of high and low refractive index materials deposited onto a substrate. Three dielectric mirror types were fabricated to reflect at the KrF laser wavelength of 248 nm and these mirrors irradiated at ∼ 175 °C in the dose range of 0.001 to 0.1 x 1025 n/m2 (E>0.1 MeV.) Mirror reflectivity was measured on as-irradiated and on 300 and 400 °C vacuum annealed mirrors. The best performing mirror overall, the alumina/silica multilayer mirror, did not appear to have degraded reflectivity in the as-irradiated or the as-irradiated and annealed conditions. For the highest dose, annealed condition degradation was observed in the hafnia silica mirror. Additionally, laser induced damage threshold was measured on the best performing mirror (the alumina/silica mirror) with a resulting threshold of > 1 J/cm2, For this mirror, the damage threshold was not discernibly degraded by neutron irradiation. These findings are somewhat in contradiction to earlier work, which suggested poor performance of dielectric mirrors at an order of magnitude lower neutron dose. In conclusion, the current findings, while preliminary, suggest the possibility for using dielectric mirrors to much higher dose levels.