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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Looking ahead: The 2025 ANS Winter Conference & Expo
With the months rolling by, the time is coming for the American Nuclear Society to hold its second annual conference of the year. The 2025 ANS Winter Conference & Expo, with a theme of “Building the Nuclear Century,” will take place November 9–12 in Washington, D.C., at the Washington Hilton.
I. Bardez, D. Caurant, J. L. Dussossoy, P. Loiseau, C. Gervais, F. Ribot, D. R. Neuville, N. Baffier, C. Fillet
Nuclear Science and Engineering | Volume 153 | Number 3 | July 2006 | Pages 272-284
Technical Paper | doi.org/10.13182/NSE06-A2613
Articles are hosted by Taylor and Francis Online.
New nuclear highly durable glass compositions, able to immobilize a higher concentration of high-level nuclear wastes than current borosilicate nuclear glasses, are being studied. Investigations are performed on rare earth (RE)-rich glasses, known as durable matrices. After a preliminary study on complex and simplified compositions, a basic glass composition was selected and studied (wt%): 51.0 SiO2-8.5 B2O3-12.2 Na2O-4.3 Al2O3-4.8 CaO-3.2 ZrO2-16.0 RE2O3. Chemical durability, physical properties (viscosity, transformation temperature), and crystallization tendency of glasses containing either a mixture of RE (La + Ce + Pr + Nd) or only one RE were studied and compared. The local environment of RE (for RE = Nd) in the glass and its evolution according to Nd2O3 concentration (from 1.3 to 30 wt%) was also studied by coupling characterization methods such as extended X-ray absorption fine structure spectroscopy at the neodymium LIII-edge and optical absorption spectroscopy. 11B, 27Al magic angle spinning-nuclear magnetic resonance, and Raman spectroscopy were also used to study glass structure.
