Abstract
This paper describes an approach of physical property measurement of molten metals by SR x-ray diffraction. Metal samples were laser-heated on the aerodynamic levitation system installed on the x-ray diffractometer equipped with the IP detector at BL19B2 in SPring-8. Lattice constants and expansion coefficients were estimated from measured diffraction data for heated metal samples. Further heating under vacuum condition will provides us dynamic physical properties of molten metals.