抄録
We applied laser-induced breakdown spectroscopy (LIBS) analysis to the molten alloy production
process, in which simulated metals (Zr, Cu, Sm, Ce) are used instead of nuclear metallic fuels containing
minor actinide (MA). Our aim is in-situ monitoring of the elementary composition of a molten alloy’s
surface in a chamber and the vapor particles generated from that surface. We successfully observed the
variation in the ratio of the elementary composition of the molten alloy’s surface in the crucible by
depending on the crucible’s temperature. The elementary composition of the vapor particles in the
molten alloy chamber was also measured. Practical experimental results show that the LIBS technique
is very useful for investigating elementary composition in the molten alloy production process and
understanding molten alloy behavior in crucibles.