apparatus for the determination of content of magnetic gd + 3 in nuclear fuel elements formed of (u, gd) 02

摘要

A method and apparatus for magnetically determining the Gd2O3 content in UO2 fuel pellets is described. The alternating current susceptibility of fuel pellets within a zircalloy cladding is measured using an ac inductive technique. Ferromagnetic impurity moments are saturated with a direct current magnetic field. Susceptibility increases with increasing Gd2O3 content when the ferromagnetic component is saturated in fields above 6 kOe.