|About this Abstract
|MS&T21: Materials Science & Technology
|Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments
|Speciation of Metal Ion Solutes in Molten Salt Matrices for Reactor Applications using Advanced Spectroscopy Techniques
|Ruchi Gakhar, Michael Woods, Simerjeet Gill, Anatoly Frenkel, Mehmet Topsakal
|On-Site Speaker (Planned)
Due to their large liquid temperature range and high actinide solubility, molten salts have regained attention for application in advanced nuclear fuel cycles and next generation nuclear reactors. A critical requirement for advancing molten salt technology is the fundamental understanding of the complex interplay between structure and dynamics of solutes (impurities, and corrosion and fission products) in the high-temperature media. The structure and speciation of salt components relate to the solute reactivity and is driven by the inherent radiation-induced processes, which in turn can degrade reactor performance. The team seeks to understand the speciation of metal ions in molten chloride salts and its variation with temperature and melt composition using advanced spectroscopy techniques as high temperature optical spectroscopy (UV-Vis-NIR), X-ray absorption spectroscopy (XAS) and X-ray absorption near-edge structure (XANES) modeling. This work was supported by Energy Frontier Research Center (EFRC-MSEE), funded by the U.S. Department of Energy Office of Science.