This project is devoted to an in-depth study of the chemical and electronic impact of metal fission products on the coating layers in TRISO nuclear fuel. In particular, there is a focus on the investigation of Pd, Cs, and Ag and their interface formation with SiC and carbon-based substrates. A variety of surface and near-surface bulk sensitive probes that investigate the occupied and unoccupied electronic states of the substrate and the metal overlayer have been utilized. By a controlled and stepwise deposition of the metal overlayer, it is possible to gain substantial insight into the formation of interfaces and their intermixing behavior.
In the past quarter, there has been a focus on a detailed analysis and description of the Pd/SiC interface formation process.
Chemical structure; Electronic structure; Palladium; Silicon carbide; X-ray spectroscopy
Chemistry | Materials Science and Engineering | Metallurgy | Nuclear Engineering | Oil, Gas, and Energy | Physical Chemistry
Interaction between metal fission products and TRISO coating materials: A study of chemical bonding and interdiffusion: 1st quarterly report, 2006.
Available at: https://digitalscholarship.unlv.edu/hrc_trp_fuels/45