CX-270199: Fission Product Transport in TRISO Fuel – University of Michigan

The University of Michigan, in collaboration with Idaho National Laboragtory, proposes to measure diffusion coefficients of fission products in SiC under thermal and irradiation conditions, as well as, synergistic effects of radiation damage, and fission products behavior at the IPyC/SiC interface. The project will use a multi-layered diffusion couple developed at a NSUF Partner Facility to investigate the diffusion of FPs, which consists of a SiC substrate that is coated with a thin layer of PyC, ion implanted with the FP of interest, and then sealed with a final layer of low temperature SiC. Self-ion irradiations will be conducted to investigate the effect of radiation-enhanced diffusion.