Problems and solutions in the standardization of reactor neutron activation analysis

A discussion is held on some selected topics of importance in the standardization of reactor neutron activation analysis. The topics are related to the accuracy and the consistency of the nuclear data, the occurrence of flux gradients in the irradiation container, the extensions and modifications of the k₀-method, and the determination of uranium via the counting of²³⁹Np and²³⁹U with a large Ge-detector or a LEPD.