Preparation of multitracer by thermal neutron fission of 235U

Radiochemical procedures for preparing a multitracer using thermal neutron fission of 235U were established. The target material of natUO2 mixed with the catcher material for the fission products was irradiated at the research reactor (KUR) of the Research Reactor Institute of Kyoto University. After irradiation, the multitracer solution mainly consisting of fission products was prepared by quick removing of the target material. The multitracer enables simultaneous tracing of various elements, and comparison of their chemical behavior under strictly identical experimental conditions. (author)