Abstract and subjects
An experimental and modeling effort to determine the solubility and diffusivity of certain lanthanides in liquid metals has been investigated to assess the feasibility of liquid-like lanthanide transport (1) mechanism in metallic fuels. We developed a conceptual pore model to better describe the lanthanide transport behavior through the fuel. Our results suggests that isolated pores will act most likely as lanthanide sink and the transport mechanism of lanthanides from fuel to the cladding has to occur through interconnected pores and cracks filled by sodium.