A Method of Preparing of Cobalt-58

概要

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Carrier-free <SUP>58</SUP>Co produced through (n, p) reaction, is usually prepared by ion exchange, but in this study the graded multistage solvent extraction method was successfully applied to the separation of <SUP>58</SUP>Co from nickel. Nickel sponge of high purity was irradiated for 15 hr in the JRR-1 reactor at Tokai. A dilute hydrochloric acid solution of about 0.2mC of 58Co was obtained from 1 g of nickel sponge by the above mentioned method. The radiochemical purity was determined by means of γ-spectrometry and decay curve measurement.
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