Abstract

Within the framework of nuclear-physical experiments on determination of the yields of plutonium and americium isotopes in nuclear reactions 237Np(3He,xnyp), and also of neptunium and plutonium isotopes in nuclear reactions 236U(3He,xnyp), a procedure was developed for preparing samples containing americium, plutonium, neptunium, and uranium with a high degree of separation from each other and from the fission and activation products. A new resin for extraction chromatography, TRU-Spec (Eichrom Industries, the United States) was used for isolation of americium, plutonium, neptunium, and uranium from irradiated targets. New data were obtained on the behavior of some fission products in the course of chemical purification with TRU-Spec resin. A procedure was suggested for separation of americium from cerium-group lanthanides.

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