Sample container for melting point measurement of MOX fuel

摘要

PPROBLEM TO BE SOLVED: To perform reliable measurement of a melting point near O/M=2.00-1.98 in an MOX fuel, where Pu concentration that has high importance from the standpoint of, in particular fuel design, or the like, to 30% or lower by reducing the reaction with oxygen in the MOX fuel (uranium-plutonium mixed oxide) and improving the reliability in the measurement of the melting point, by reducing the instability of a heat curve with respect to temperature increase stagnation. PSOLUTION: A sample container for measuring the melting point using a thermal arrest method, by sealing the MOX fuel is the sample container for measuring the melting point of the MOX fuel with the entirety made of a tungsten-rhenium alloy. Typically, the MOX fuel to be measured is U-Pu mixed oxide, where Pu concentration is approximately 30% and O/M=2.00-1.95, and the tungsten-rhenium alloy that is a container-constituting material is made of tungsten 90%-rhenium 10%. PCOPYRIGHT: (C)2005,JPO&NCIPI